Entries |
Document | Title | Date |
20080205914 | IMAGE FORMING APPARATUS AND JAM-REMOVAL METHOD THEREOF - An image forming apparatus including an image forming apparatus body having an aperture for the removal of a jammed printing medium, a printing engine installed in the image forming apparatus body to print an image on a printing medium supplied thereto, and a jam-removal device installed to the image forming apparatus body in an upwardly movable manner, so as to remove a jammed printing medium from the image forming apparatus body. As the jam-removal device, capable of opening or closing the aperture for the removal of the printing medium jammed in the body, can be sliding moved in an upward direction of the image forming apparatus body, the image forming apparatus can achieve a reduced installation space thereof. | 08-28-2008 |
20080247768 | Image Forming Apparatus, MFP and Method of Displaying Jam Removal Guidance - An image forming apparatus may include an image forming device to form and fix an image on a paper, a paper conveyer to convey the paper from a sheet feeder through the image forming device to a finisher, at least one door configured to uncover and cover a part of the paper conveyer, a jam detector to detect whether a jam occurs in the paper conveyer, at least one door sensor to detect whether each door is open or closed, a display, a memory, and a controller to control the jam detector, the door sensor and the display. The controller may be configured to execute control to display a jam detection result detected by the jam detector and jam removal guidance, corresponding to the jam detector which detects the jam occurring in the paper conveyer, based on the information of preset display orders of the jam removal guidance. | 10-09-2008 |
20080273884 | IMAGE FORMING SYSTEM, IMAGE FORMING DEVICE, POST-PROCESSOR, AND PROGRAM - An image forming system includes an input unit for input of setting information, an image forming unit, a conveying unit, a control unit, and a jam detecting unit, wherein a set of a plurality of different kinds of special sheets disposed in a predetermined order is used. When occurrence of a jam is detected by the jam detecting unit, the control unit recognizes whether a special sheet having been fed is present in the image forming system, and if it is recognized that a special sheet is present in the image forming system, the control unit controls the conveying unit, after the jam being released, to eject a special sheet or sheets as unnecessary up to one that is disposed preceding a special sheet that is of the same kind as a most front one that was present in the image forming system at the time of the occurrence of the jam. | 11-06-2008 |
20080279573 | IMAGE FORMING SYSTEM, IMAGE FORMING DEVICE, POST-PROCESSOR, AND PROGRAM - An image forming system includes an input unit for input of setting information, an image forming unit, a conveying unit, a control unit, and a jam detecting unit, wherein a set of a plurality of different kinds of special sheets disposed in a predetermined order is used. When occurrence of a jam is detected by the jam detecting unit, the control unit recognizes whether a special sheet having been fed is present in the image forming system, and if it is recognized that a special sheet is present in the image forming system, the control unit controls the conveying unit, after the jam being released, to eject a special sheet or sheets as unnecessary up to one that is disposed preceding a special sheet that is of the same kind as a most front one that was present in the image forming system at the time of the occurrence of the jam. | 11-13-2008 |
20080279574 | Sheet feeder and jam detecting method - A transporter is adapted to transport a sheet in a transport direction in a transport path that includes a detecting range. A measurer is disposed at an upstream end of the detecting range in the transport direction, and is operable to measure a moving distance of the sheet. A detector is disposed at a downstream end of the detecting range in the transport direction, and is operable to detect a leading end edge of the sheet. A processor is operable to detect a jam in case that the moving distance is longer than a distance of the detecting range in the transport direction while the leading end edge of the sheet is not detected by the detector. | 11-13-2008 |
20080292330 | IMAGE FORMING APPARATUS - In the recovery sequence after detecting recording medium conveyance jam or after detecting empty of recording medium in the sheet feeding tray, by applying a bias having the same polarity as that of the bias of the secondary transfer, remaining toner on the intermediate transfer member is transferred onto the secondary transfer roller side and a part of remaining toner not transferred by slipping through is cleaned by an intermediate member cleaning device disposed between the secondary transfer device and a bending roller being in contact with an outer surface of the intermediate transfer member. | 11-27-2008 |
20080298821 | IMAGE FORMING APPARATUS AND METHOD FOR DOUBLE-SIDED PRINTING - An image forming apparatus and a method are provided. The apparatus includes an image forming unit that discharges ink; a transfer unit that performs a first conveying operation of conveying the sheet in a state in which a first surface thereof faces the image forming unit, and a second conveying operation of conveying the sheet in a state in which a second surface thereof faces the image forming unit after the first conveying operation; a detecting unit that detects a jam of the sheet subjected to the second conveying operation; a setting unit that sets a dry time for drying the ink; and a control unit that controls the transfer unit to start the second conveying operation after the dry time has elapsed after the first conveying operation, wherein the setting unit sets the dry time for a current sheet based on the detection result of a previous sheet. | 12-04-2008 |
20080304836 | IMAGE FORMING APPARATUS AND METHOD OF RESTARTING THE APPARATUS - An image forming apparatus which can restrain a flaw from occurring on surfaces of driven members at a time of restarting the apparatus after jam treatment or the like is provided. The image forming apparatus includes a drive load detection section which detects drive load of the respective driven members such as a photoreceptor, a fixing section, a conveyance section and a transfer section driven by a drive section and stops the drives of the respective driven members by the drive section when the drive load detecting section detects the drive load of which value is larger than or equal to a predetermined value at the time of restarting the apparatus. | 12-11-2008 |
20090003849 | MOTOR CONTROL FOR PAPER JAM AT FUSER UNIT - A developer image is formed by selectively supplying a developer based on a potential distribution corresponding to image information, the formed developer image is electrostatically attracted and transferred to a sheet material, the developer image is fixed to the sheet material by applying heat and pressure to the developer image transferred to the sheet material and the sheet material, and a drive force in a forward direction applied to the sheet material is cut off in a case where the sheet material is not ejected in a specified time, and then a drive force in a direction opposite to that of the drive force in the forward direction is applied for a specified time, and therefore, it is possible to prevent a sheet jammed in a fuser unit from being concealed in the fuser unit. | 01-01-2009 |
20090060532 | PAPER CARRYING DEVICE, DOCUMENT SCANNING APPARATUS, AND PRINTING APPARATUS - A paper carrying device includes a carrying path, a light sensor, a contact sensor, and a judgment section. Both of the light sensor and the contact sensor output a presence-signal indicating that paper exists at a predetermined position in the carrying path or an absence-signal indicating that paper does not exist at the predetermined position. The judgment section judges that a signal output from the light sensor is an error when the light sensor outputs the presence-signal while the contact sensor outputs the absence-signal. | 03-05-2009 |
20090067855 | IMAGE FORMING APPARATUS AND PRINT MEDIUM SENSING METHOD THEREOF - An image forming apparatus includes a main body having an image forming unit, a medium feeding unit installed in the main body, having a loading plate to load a print medium thereon and to feed the loaded print medium to the image forming unit, a medium sensing unit which comprises an interference unit which operates to correspond with the print medium loaded on the loading plate and the print medium fed by the medium feeding unit and the print medium being in a registration position on a feeding path, and a sensor having a sensing position and sensing a movement of the interference unit, and a controller to determine whether the print medium is loaded on the loading plate and whether the print medium is in the registration position on the feeding path, based on a sensing signal of the sensor. | 03-12-2009 |
20090080910 | METHOD OF DETECTING JAM AND IMAGE FORMING APPARATUS USING THE SAME - A method of detecting a wrap jam or accordion jam type paper jam and stopping a printing process once a wrap jam or according jam type is detected and an image forming apparatus using the same are provided. The method of detecting the paper jam in the image forming apparatus includes sensing to detect a sheet of paper by using an exit sensor, detecting whether the sheet of paper passes between a transfer roller and an OPC (organic photoconductive) drum for a first time period if the exit sensor does not detect the sheet of paper, and stopping a printing operation of the image forming apparatus if the sheet of paper passes between the transfer roller and the OPC drum for the first time period. Accordingly, it is possible to reduce damage to a fusing roller and increase the lifetime of the fusing roller and other components of the image forming device, if a wrap jam or accordion jam type occurs. | 03-26-2009 |
20090116856 | SHEET-HANDLING APPARATUS WITH A DETECTING DEVICE - A sheet-handling apparatus with a detecting device includes a casing, a plurality of entrance rollers located in the casing, an image collector arranged at one side of the casing, a plurality of middle reflectors and side reflectors. A paper path is formed between the entrance rollers, the paper path includes a middle path and two side paths arranged in the sides of the middle path. The image collector includes an illuminant and an image sensor. The middle reflectors are fixed in the casing and at the other side of the paper path and face to the middle path. The side reflectors are arranged at the side of the middle reflectors. The invention can monitor a paper when it is stuck in the paper path, and the manufacture cost of the invention is reduced. | 05-07-2009 |
20090136243 | Motor Controller and Printer - A motor controller is provided. The motor controller includes a motor drive unit that drives a plurality of motors; a thermal shutdown unit that is provided in the motor drive unit and that stops the plurality of motors in the case of an overload; a lock signal generation unit that generates a lock signal corresponding to a respective one of the plurality of motors when a rotational speed of the respective motor reaches a threshold speed set for the respective motor; and an operation determination unit which, when the lock signal generation unit interrupts lock signals for all of the plurality of motors, determines that thermal shutdown unit has operated. | 05-28-2009 |
20090169222 | IMAGE FORMING APPARATUS - An image-forming apparatus includes a recording head configured to eject ink droplets, a transport belt disposed facing the recording head and configured to transport a sheet, a suction mechanism to suctionally attract the sheet to the transport belt, a release mechanism configured to change a position of the transport belt between a home position close to the recording head and a release position away from the recording head, and a control mechanism configured to control transport and discharge of the sheet. The control mechanism, is configured to move the transport belt from the home position to the release position with the sheet being attracted to the transport belt when the control mechanism detects a sheet jam, rotate the transport belt in a direction in which the sheet is transported at the release position, and then discharge the sheet from the transport belt. | 07-02-2009 |
20090196635 | SHEET CONVEYING DEVICE - A sheet conveying device having conveyer rollers for conveying sheets one by one, a jam treater having a space and sheet guides for regulating a front side and a back side of a conveyed sheet. In the space of the jam treater, a sheet is guided, and the jam treater is rotatable and can be drawn out of a housing of the sheet conveying device. The sheet guides have curved portions to form a space in which the jam treater rotates. In order to remove a jammed sheet from a sheet path in the sheet conveying device, an operator rotates the jam treater to wind the jammed sheet around the jam treater and draws the jam treater together with the jammed sheet out of the housing. | 08-06-2009 |
20090214228 | RECORDING APPARATUS AND METHOD OF CONTROLLING RECORDING APPARATUS - A recording apparatus having a transporting unit to transport a target, a recording unit recording on the target transported, a fluid supply adjusting unit to switch an operation between supply and non-supply of fluid from a fluid supply source, a drive source for the transporting unit and the fluid supply adjusting unit, a control unit to control the drive source, a jam detection unit to detect a jam of the target, a storage unit to retain jam data, a determining unit configured to determine the presence or absence of occurrence of the jam, wherein the control unit carries out a first control or a second control according to the detection of the jam when the power is turned OFF and carries out a third control or a fourth control according to the state of occurrence of the jam when the power is turned ON. | 08-27-2009 |
20090232523 | IMAGE FORMING APPARATUS AND PAPER-JAM CLEARING METHOD - A paper conveying path extends from a paper feeding tray to an image forming unit, a branch conveying path extends from a branching point in the paper conveying path to a paper container, a first paper sensor and a second paper sensor are arranged in the paper conveying path upstream of the branching point, and a switch nail is arranged at the branching point to switch paths between the paper conveying path and the branch conveying path. The switch nail is controlled so that a jammed paper is conveyed to the paper container via the branch conveying path upon detecting paper jamming in the paper conveying path and the first sensor detects the jammed paper while the second sensor does not detect the jammed paper. | 09-17-2009 |
20090279906 | IMAGE FORMING APPARATUS - An image forming apparatus includes at least one image carrier and a recording medium conveyor forming a transfer nip therebetween, a conveyance member disposed closest to the transfer nip on an upstream side of the transfer nip to convey the recording medium to the transfer nip, and a conveyance control mechanism to deactivate the conveyance member to stop providing a conveyance force to the recording medium after the leading edge of the recording medium has entered the transfer nip and before the trailing edge of the recording medium passes a point of force application and remaining in the inactive state until the recording medium passes the point of force application. The conveyance force remains unapplied to the recording medium from when the conveyance control mechanism deactivates the conveyance member to when the trailing edge of the recording medium passes the transfer nip. | 11-12-2009 |
20090304398 | IMAGE FORMING APPARATUS - An image forming apparatus which can draw out a pre-fixing conveying portion and a fixing device from an apparatus body has an abutment member which can abut a conveying surface of the pre-fixing conveying portion and can be separated therefrom, the abutment member being separated from the conveying surface of the pre-fixing conveying portion when the apparatus body is operated and abutting the conveying surface of the pre-fixing conveying portion in the event that a jam is detected by a sheet detection sensor. | 12-10-2009 |
20090317095 | Automatic document feeder - An automatic document feeder includes a controller that compares an input original length that is received from a main operating unit and an actual original length that is calculated based on a detection result from a registration sensor arranged, on a conveying path, downstream of a separation feeding unit. The controller sets, when a result of the comparison indicates that the input original length and the actual original length are not equal, a larger value between the input original length and the actual original length as a jam determining value. The controller controls a jam detection based on the set jam determining value. | 12-24-2009 |
20090317096 | IMAGE FORMING APPARATUS, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM - An image forming apparatus capable of performing operation-checking and an operation for clearing a counter value for a replaced component at component replacement with a simple manipulation, and simple in construction and low in costs. After criterion values for jam detection by a recording-sheet-conveyance-state detection unit that detects sheet feed jam and/or conveyance jam are changed to new component judgment criterion values, whether a roller component has been replaced by a new roller is determined. When replacement to a new roller is determined, a counter value of a life counter for counting the number of times of use of a roller component for detection of replacement time is cleared. | 12-24-2009 |
20100021186 | IMAGE FORMING APPARATUS - An image forming apparatus is provided and includes a transport unit which transports a recording medium; a plurality of image forming units provided so as to be individually retractable with respect to the transport unit, the image forming units forming images on the recording medium; a sensing unit sensing an occurrence of a jam; and a report unit. The reporting unit reports, when the sensing unit senses occurrence of a jam, an image forming unit from among the plurality of image forming units corresponding to a position of the recording medium on the transport unit. | 01-28-2010 |
20100034544 | METHOD OF RECOVERING FROM DUPLEX JAM FOR IMAGE FORMING APPARATUS AND THE IMAGE FORMING APPARATUS USING THE METHOD - Provided are a method of recovering from a duplex jam for an image forming apparatus and the image forming apparatus using the method. The method includes sensing a paper jam on a duplex transport section, opening and closing the duplex printing unit if the paper jam is sensed, re-sensing the paper jam, and immediately resuming printing if the paper jam is not re-sensed. Thus, if a paper jam occurs during duplex printing by an image forming apparatus including a duplex printing unit, a recovery operation can be performed by merely eliminating the paper jammed on a duplex transport path without a need to open and close a main body cover, thereby continuing printing and thus providing convenience to a user by relieving a cumbersome process from the user and allowing the user to conveniently and promptly continuing printing. | 02-11-2010 |
20100061741 | Image forming apparatus - A transferring unit transfers a toner image from an image carrier to a recording medium. A fixing unit fixes the toner image transferred onto the recording medium. A conveying unit conveys the recording medium from the transferring unit to the fixing unit along a conveyance surface. A guiding member receives the recording medium from the conveying unit and guides the recording medium to a fixing nip of the fixing unit along a guiding surface. An angle changing unit changes an angle between the conveyance surface and the guiding surface according to the type of the recording medium. | 03-11-2010 |
20100067926 | ELECTRONIC DEVICE - An electronic device includes a carriage conveyance unit, a sheet conveyance unit, a failure detection unit, a position detection unit, and a jam determination unit. The carriage conveyance unit includes a motor and conveys a carriage in a main scanning direction by a driving force of the motor. The sheet conveyance unit conveys a sheet in a sub-scanning direction which crosses the main scanning direction in which the carriage is conveyed. The failure detection unit detects a conveyance failure of the carriage. The position detection unit detects a position of the carriage in the main scanning direction. The jam determination unit determines whether or not the conveyance failure is due to jamming caused by interference between the carriage and the sheet, based on the position of the carriage detected by the position detection unit at a time when the conveyance failure is detected by the failure detection unit. | 03-18-2010 |
20100074636 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an image forming unit; a first sheet discharging path that reverses a traveling direction of a sheet and discharges the sheet; a cover, which forms a part of the first sheet discharging path when the cover is in a closed state; a second sheet discharging path, which is formed when the cover is in an open state, which is branched from the first sheet discharging path, and which discharges the sheet from the image forming unit without reversing the traveling direction of the sheet; a sensor, which is positioned downstream in a conveying direction of the sheet from the image forming unit, and which detects a passage of the sheet; and a determination unit that determines a jam based on a detection result of the sensor, the determination unit changing a determination criterion of the jam in accordance with the state of the cover. | 03-25-2010 |
20100080575 | METHOD FOR PROCESSING PAPER JAM IN IMAGE FORMING APPARATUS HAVING AT LEAST ONE OPTION CASSETTE, AND IMAGE FORMING APPARATUS THAT PERFORMS THE METHOD - An image forming apparatus including at least one option cassette, and a paper jam handling method performed in the image forming apparatus are provided. The paper jam handling method includes the operations of detecting whether paper jam occurs in the image forming apparatus, checking whether paper sheets exist on a transfer path of the image forming apparatus and on a transfer path of the option cassette, when the paper jam is detected, and leaving the paper sheet on the transfer path of the option cassette as it is and discharging the paper sheet caught on the transfer path of the image forming apparatus. Accordingly, paper damage or paper consumption may be prevented by not discharging a paper sheet caught on a transfer path of at least one option cassette during paper jam. | 04-01-2010 |
20100086318 | FIXING JAM DETECTING IMAGE FORMING APPARATUS - An image forming apparatus includes a fixing device that fixes a toner image onto a printing medium. The fixing device includes a fixing member heated by a heating device, a pressurizing member that freely rotatably pressure contacts the fixing member and creates a fixing nip that allows a printing medium to pass and melts the toner image thereon. A separation pick is arranged on a printing medium ejection side of the fixing nip and prevents the printing medium from winding up the fixing member. Three sensors are arranged downstream of the separation pick at a center and both side ends in the widthwise direction of the fixing nip to detect passage of the printing medium. A fixing jam detection device is provided to detection occurrence of jam based on the detection of the three sensors. | 04-08-2010 |
20100119244 | IMAGE FORMING APPARATUS - When jam occurs in one of a tandem conveyance path and bypass conveyance path, a sheet is automatically discharged from the conveyance path where no jam has occurred. A sheet retained at the upstream side with respect to a first fixing device in a sheet conveying direction is automatically discharged to the outside of an image forming apparatus by using the conveyance path where no jam has occurred. After the automatic discharging of the sheet is completed, a user is prompted to remove the jammed sheet. | 05-13-2010 |
20100124424 | Duplex printer - In a duplex printer, when it is determined that a paper jam occurs only in the first transport path that is a path upstream of a sheet stacking unit among the first and second transport paths along a feeding direction of papers (the second transport path is a path downstream of the sheet stacking unit), operations of a sheet feed unit, a first printing unit for printing on one side of papers and an intermediate sheet transport unit that are located along the first transport path, are stopped. Then, all papers stacked on the sheet stacking unit are fed out and a second printing unit prints on another side of the fed-out papers. The papers with their both sides are printed are ejected by a sheet ejection unit. According to the duplex printer, it can be prevented that papers are wasted needlessly. | 05-20-2010 |
20100183320 | Image Forming Apparatus, MFP and Method of Displaying Jam Removal Guidance - An image forming apparatus may include a printer to fix images on paper sheets that travel along a first paper path and a second paper path, and first and second doors that may be open to uncover the first and second paper paths, respectively. First and second sensors may detect if the respective doors are open and first and second jam detectors may detect jams along the respective paper paths. A memory may store first and second jam removal guidance for the jams along the respective paper paths. A controller may cause a display to switch from displaying the first jam removal guidance read from the memory to displaying the second jam removal guidance read from the memory upon the second door sensor detecting the second door is open. | 07-22-2010 |
20100189449 | Recording sheet processing device - A recording sheet processing device includes a stack tray used, when a recording sheet gets jammed inside a subsequent finishing device, for collecting recording sheets left inside a preceding image forming device and recording sheets left inside a recording sheet feeding unit of the image forming device before those recording sheets reach the finishing device. A portion of a conveying path in the recording sheet processing device is opened so that the recording sheet that has jammed at the finishing processing side can freely fall down into a stack tray. Then, a conveying path switching claw is switched to a position for collecting subsequent recording sheets into the stack tray. Thus, subsequent recording sheets are collected in the stack tray without stoppage in conveyance. | 07-29-2010 |
20100239271 | COLOR ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A color electrophotographic image forming apparatus for forming an image on a recording material, wherein plurality of cartridges are detachably mounted to a main assembly of the apparatus, the color electrophotographic image forming apparatus includes a cartridge supporting member for supporting the cartridges, the cartridge supporting member being movable between an inside position which is in the main assembly the outside position which is out of the main assembly; a belt unit including a feeding belt for feeding a recording material on which the image is to be formed; and locking means for locking the cartridge supporting member and the belt unit in the state that the feeding belt and the cartridge are contacted to each other, wherein the belt unit and the cartridge supporting member in the state of being locked by the locking means are movable from the inside position to the outside position, and the feeding belt and the cartridge are capable of being spaced from each other by releasing the locking means. | 09-23-2010 |
20100247117 | Image Forming Device Having Sheet Reverse Running Mechanism - An image forming device includes a changeover flap, a cover, a flap displacement mechanism, an inlet end, an outlet end, and a first conveyer passage extending from the outlet end. A second conveyer passage is bifurcated from the first conveyer passage at a bifurcated portion. The changeover flap is provided at the bifurcated portion and is pivotally movable. The flap displacement mechanism includes a pivot arm pivotally movable. The pivot aim includes a free end portion provided with a linking portion to which the changeover flap is pivotally movably connected. The pivot arm and the changeover flap is configured to change an angle therebetween in accordance with a pivotal movement of the changeover flap and the pivot arm in interlocking relation to the pivotal movement of the cover from its closed position to its open position to displace the linking portion toward the cover. | 09-30-2010 |
20100278545 | PRINTER - A printer includes a feed unit; an image forming unit, which executes double-side printing; an acceptance unit, which accepts an execution command of either continuation printing and reprinting if double-side printing is stopped and a first recording medium with only a first side image printed thereon exists in the conveying path of the printer; and a control unit, which prints only the unprinted second side image, if a continuation printing command is entered and the control unit reprints the first side image on a second recording medium and also prints the unprinted second side image on the second recording medium, if a reprinting command is entered. | 11-04-2010 |
20100303479 | IMAGE FORMING APPARATUS AND METHOD OF CONTROLLING AGITATING MEMBER - An image forming apparatus includes: a rotating member to heat a toner on a sheet; a heater to heat the rotating member; a power controller to maintain temperature of the rotating member in a first mode after the temperature reaches the target temperature, and configured to raise the temperature to the target temperature in a second mode after the temperature falls under the target temperature; a waste toner container to store a waste toner; an agitator to agitate the waste toner in the waste toner container; an driver to rotate the agitator a number of times in a drive if the heat controller stops to raise the temperature in the second mode; a counter to count a number of the drives; and an agitation controller to set the number of times in the drive based on the number of the drives. | 12-02-2010 |
20110020016 | IMAGE FORMING APPARATUS - According to the embodiment, an image forming apparatus includes a paper transporting unit configured to transport a paper, an image forming unit configured to form an image on the paper, a fixing unit configured to generate heat for fixing the image on the paper, and a lighting unit configured to irradiate the fixing unit with red light. | 01-27-2011 |
20110026944 | Fixing device and image forming apparatus incorporating same - In a fixing device, a fixing member contacts an opposing member to form a nip therebetween through which a recording medium bearing a toner image passes. A plurality of separators provided downstream from the nip in a recording medium conveyance direction contacts the fixing member to separate the recording medium having passed between the fixing member and the opposing member from the fixing member. A plurality of contact-direction biasing members connected to the plurality of separators biases the separators to cause the separators to contact the fixing member. A releasing member contacts the separators to cause the separators to separate from the fixing member. A driver connected to the releasing member separates the releasing member from the separators to cause the separators to contact the fixing member. | 02-03-2011 |
20110044704 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a fixing unit fixing an unfixed toner image formed by an image forming unit and transferred by a transfer unit on a recording medium; a discharge unit provided above the fixing unit and discharging the recording medium; a fixing jam processing cover rotating with respect to an apparatus main body so as to open or close a part of a paper conveyance path from the fixing unit to the discharge unit; a conveyance guide member swingably provided on the fixing jam processing cover and guiding the recording medium to the discharge unit; and a supporting member having an inclined surface with which the conveyance guide member makes contact and along which, as the fixing jam processing cover is being opened, the conveyance guide member slides to become less inclined with respect to a horizontal direction. | 02-24-2011 |
20110064427 | Sheet processing device, image forming system, and sheet conveying method - When a sheet processing device is in operation, if any of a paper jam, a motor error, and an open door occur, a sheet-processing-device control unit stops all the loads of the sheet processing device other than the entrance motor. After that, the sheet-processing-device control unit determines whether an entrance sensor detects a sheet remaining in a sheet discharging path. If no sheet is detected, the entrance motor stops in the same manner as the other loads stop. If the entrance sensor detects a sheet, the entrance motor continues driving. When the number of steps of the entrance motor that continues driving increases to a number equal to or more than a predetermined number that corresponds to a sheet position that is accessible by a user from a discharge tray, the entrance motor stops. | 03-17-2011 |
20110064428 | PRINTER - A printer includes a printing unit configured to print on a print medium while transferring the print medium by a first transfer section, a transfer unit located downstream the printing unit in a transfer route and configured to transfer the print medium by a second transfer section, and a controller configured to control the printing unit and the transfer unit. The controller is configured to stop the first transfer section prior to the second transfer section upon detection of a jam of the print medium. | 03-17-2011 |
20110097093 | FIXING APPARATUS - A fixing apparatus capable of performing, even by a short brake, brake assist by which a sheet is stopped at a position where the sheet is visible. Upon occurrence of a wrap jam, brake control for a drive motor and brake assist control are performed. In the brake assist control, a pressing process is performed based on the number of assist operation pulses, which is set in advance. When an edge of a home position sensor signal is detected, a process for stopping the pressing process is carried out, whereby a pressing unit assumes a maximum pressing position. | 04-28-2011 |
20110123203 | METHOD AND SYSTEM FOR PRINTING - A printing system including: a first printer that forms an image on continuous-form printing paper, and includes a pre-heating unit that preliminarily heats the continuous-form printing paper prior to fixation and a fixing unit that performs the fixation; and a second printer that forms an image on the continuous-form printing paper fed from the first printer. The second printer includes a jam detecting unit that detects, at a detection position upstream of a position where the second printer forms the image on the continuous-form printing paper, and a control unit that controls the jam detecting unit such that the jam detection is not performed for a period of time, over which a deformed portion of the continuous-form printing paper which has been at rest at the pre-heating unit of the first printer passes through the detection position of the jam detecting unit. | 05-26-2011 |
20110135325 | IMAGE FORMING SYSTEM - The present invention realizes an image forming system wherein an efficient cleaning of plural fixing apparatuses by using a blank sheet is attained, the system includes: an image forming section; a sheet feeding apparatus; a plurality of fixing apparatuses; a temperature control section controlling the temperature of the fixing apparatuses; a sheet retention determination section determining whether there is a sheet retained in any of the fixing apparatuses during a jam; and a control section controlling cleaning of the fixing apparatuses by a blank sheet fed from the sheet feeding apparatus, wherein the control section carries out cleaning of the fixing apparatus in which it has been determined that a sheet is retained based on input from the sheet retention determination section, when the temperature of the fixing apparatus has been determined to have reached a prescribed temperature based on input from the temperature control section. | 06-09-2011 |
20110135326 | PRINTING APPARATUS, METHOD OF CONTROLLING PRINTING APPARATUS, AND PROGRAM - When an interrupted printing process is to be restarted, normally printed sheets can be reused. When jamming of a sheet is detected while a job is being performed, the printing is interrupted and specification of one or more sheets among the sheets that have been fed from the feeding unit before the job was interrupted is accepted from a user. Furthermore, a feeding unit in which the specified sheet is set so as to be reused by the user is selected. Then, when the printing is to be restarted, control is performed so that one or more sheets that have been specified are not reprinted, the specified sheets being fed from the selected feeding unit and being output together with the sheet to be reprinted. | 06-09-2011 |
20110194861 | MEDIUM CARRYING DEVICE, IMAGE FORMING DEVICE, AND MEDIUM CARRYING METHOD - A medium carrying device includes: first and second carrying part that carry a medium to a second position via a first position; a slack detection unit positioned between the first and second carrying part and detecting slack in the medium; a medium carrying detection part that detects a carrying state of the medium; an input part that receives a recovery instruction when an abnormality is detected in the carrying state of the medium by the medium carrying detection part; a controller that stops the carrying of the medium by the first and second carrying parts when the abnormality is detected in the carrying state of the medium by the medium carrying detection part and that resumes the carrying of the medium by the first and second carrying parts according to a detection result by the slack detection part when the input part receives the recovery instruction. | 08-11-2011 |
20110206388 | FIXING APPARATUS - A fixing apparatus for fixing an image formed on the recording material, includes a fixing rotatable member for forming a fixing nip; a plurality of wrapping preventing members, each provided downstream of the fixing nip with respect to a feeding direction of the recording material, for preventing the recording material from wrapping around the fixing rotatable member, wherein when the recording material is jammed downstream of the fixing nip, the wrapping preventing members moves to narrow space from the fixing rotatable member by being pushed by the jammed recording material, wherein the wrapping preventing members are arranged in a direction substantially perpendicular to the recording material feeding direction; and a connecting portion for connecting adjacent ones of the wrapping preventing members to move, when one of the wrapping preventing members is pushed by the jammed recording material, also adjacent one of wrapping preventing members to narrow the space. | 08-25-2011 |
20110236042 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an image forming unit that forms an image on recording paper; a paper feeding unit that feeds the recording paper to the image forming unit; an opening/closing door that is provided to be opened/closed by an operator; a paper conveyance path through which the recording paper is conveyed from the paper feeding unit through the image forming unit to a paper outlet, the paper conveyance path including a maintenance feasible conveyance path and a maintenance infeasible conveyance path that does not allows the operator to maintain even if the opening/closing door is opened; and a residual paper detecting unit that detects residual paper remaining on the maintenance infeasible conveyance path. New recording paper is fed to the paper conveyance path when the residual paper detecting unit has detected the residual paper after opening and closing the opening/closing door. | 09-29-2011 |
20110262153 | PRINTING APPARATUS AND SHEET PROCESSING APPARATUS - At least one of processing units is capable of being pulled out of a main body of an apparatus during the occurrence of a sheet conveyance jam. A first cutter and a second cutter are arranged in the vicinity of the processing unit. The first cutter is configured to cut the sheet on an upstream of the processing unit. The second cutter is configured to cut the sheet on a downstream thereof. When the processing unit is pulled, the sheet is cut on the upstream and downstream of the processing unit. | 10-27-2011 |
20110286752 | APPARATUS AND METHOD FOR CLEANING A PHOTORECEPTOR IN A PRINTING APPARATUS - An apparatus and method that cleans a photoreceptor in a printing apparatus is disclosed. The method can include setting a voltage bias of an electrostatic cleaning brush in a printing apparatus to a first voltage bias. The method can include generating an image on media using a photoreceptor. The method can include cleaning the photoreceptor using the electrostatic cleaning brush operating at the first voltage bias. The method can include measuring operating conditions of the printing apparatus to determine an expected film accumulation rate on the photoreceptor. The method can include adjusting the voltage bias on the electrostatic cleaning brush to a second voltage bias based on the measured operating conditions. | 11-24-2011 |
20110311241 | APPARATUS AND METHOD OF CONTROLLING AN IMAGE FORMING APPARATUS - A controller for controlling an image forming apparatus having a light detection unit controls at least two operations including: 1) operation of detecting a jam of a recording sheet in a sheet transfer path based on a light intensity level detected by the light detection unit when image forming is performed; and 2) operation of controlling switching of an operation mode of the image forming apparatus to an energy save mode based on a light intensity level detected by the light detection unit. | 12-22-2011 |
20120002985 | Image Forming Apparatus and Method - Certain embodiments provide an image forming apparatus including: a drum; a photoconductive member; a charging device; a developing device; a toner supplying section; a transfer member; a sensor to measure the density of a toner band adhering on the transfer member; a process control section to separately control on and off of a developing bias and on and off of a charging bias; a timing adjusting section to instruct the process control section to turn on the developing bias at timing when a portion not substantially charged on the photoconductive member is opposed to the developing device; and a calculating section to calculate an amount of supply of toner from the toner supplying section into the developing device according to a result of measurement of the density of the toner band which is formed by the developing bias enabled by the timing adjusting section by the sensor. | 01-05-2012 |
20120020681 | Fixing device and image forming apparatus incorporating same - A fixing device includes a separator presser that presses against a plurality of separators to separate the plurality of separators from a fixing rotary body that contacts an opposed rotary body to form a fixing nip therebetween through which a recording medium bearing a toner image passes. A single driver is connected to the separator presser to separate the separator presser from the plurality of separators. An entering recording medium detector is disposed upstream from the fixing nip in a conveyance direction of the recording medium to detect the recording medium. A controller is connected to the driver to control the driver based on a detection signal sent from the entering recording medium detector to change a contact time period for which the plurality of separators contacts the fixing rotary body. | 01-26-2012 |
20120027427 | SHEET FINISHER, IMAGE FORMING APPARATUS AND SHEET FINISHING METHOD - A sheet finisher according to an embodiment includes: a fold roller which folds a central area of a sheet bundle to form a fold line on the sheet bundle; a fold reinforcing roller which moves along a direction of the fold line while pressing the fold line of the sheet bundle to reinforce the fold line; and a drive unit which includes a motor and transmits a drive torque of the motor to the fold reinforcing roller, so that the drive torque can be changed, to move the fold reinforcing roller along the fold line. | 02-02-2012 |
20120027428 | SHEET FINISHER, IMAGE FORMING APPARATUS AND SHEET FINISHING METHOD - There is provided a sheet finisher including a fold roller which folds the center of a sheet bundle and forms a fold line in the sheet bundle; a roller unit which is provided with an upper roller and a lower roller and which moves the upper roller and the lower roller along a fold line direction, while nipping and pressing the fold line by the upper roller and the lower roller to reinforce the fold line; and a jam release handle which separates the upper roller and the lower roller in a thickness direction of the sheet bundle and weakens or removes pressure between the upper roller and the lower roller when the upper roller and the lower roller stops in a state of pressing the fold line. | 02-02-2012 |
20120063791 | PRINTING APPARATUS AND CONTROLLING METHOD THEREFOR - The printing apparatus includes a transport mechanism that feeds the recording medium to a printing position along a transport route, a carriage disposed so as to oppose the recording medium placed on the printing position, and a driving unit that drives the carriage to reciprocate in a main scanning direction different from the transport direction of the recording medium. The carriage moves when the front edge of the recording medium reaches a predetermined position on the transport route, and jam detection is performed by deciding whether the recording medium is jammed, on the basis of a physical amount that changes with the movement of the carriage. | 03-15-2012 |
20120093525 | PRINTING APPARATUS - A printing apparatus includes a print mechanism which performs a printing on a plurality of papers; a paper feed section on which the papers to be printed are placed; a paper discharge section on which the papers that have been printed are placed; a transport route which extends from the paper feed section to the paper discharge section via a printing position at which the printing is performed by the print mechanism; a transport mechanism which successively transports the papers along the transport route; and a controller which controls the transport mechanism. The controller controls the transport mechanism to perform a transportation of the papers by a plurality of transport modes including a first transport mode and a second transport mode. | 04-19-2012 |
20120093526 | IMAGE FORMING APPARATUS AND GUIDANCE DISPLAY METHOD IN THE IMAGE FORMING APPARATUS - According to one embodiment, an image forming apparatus includes a paper feeding section, a conveying section, an image forming section, and a display section. The paper feeding section feeds a set sheet. The conveying section conveys the sheet fed from the paper feeding section. The image forming section forms an image on the sheet conveyed by the conveying section. The display section displays sheet set guidance corresponding to a type of the sheet set in the paper feeding section. | 04-19-2012 |
20120106988 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming section which forms an image on a paper sheet by using a developer; a fixing section which includes a rotational axis and rotates around the rotational axis so as to fix the image formed on the paper sheet; a transport mechanism which transports the paper sheet on a paper transport route in a transport direction; a transport stop detecting section which detects a transport stop of the paper sheet; a judgment section which judges to which one of an upstream side and a downstream side of the fixing section in the transport direction the paper sheet is removed after the transport stop is detected by the transport stop detecting section; and a control section which controls the transport mechanism to execute a cleaning mode for cleaning the fixing section based on a judgment result of the judgment section. | 05-03-2012 |
20120148268 | Image Forming Device - An image forming device includes a main body, a replaceable unit, a determination unit, a first memory, a second memory, a temporary memory, a first control unit, and a second control unit. The determination unit determines whether the replaceable unit is a genuine product or a non-genuine product with respect to the main body. The first memory is configured to store a physical value increasing with a use of the main body mounted with the genuine product. The second memory is configured to store the physical value increasing with the use of the main body mounted with the non-genuine product. The temporary memory is configured to temporarily store the physical value increasing with the use of the main body mounted with the non-genuine product. | 06-14-2012 |
20120163838 | IMAGE FORMING APPARATUS - A sheet conveying apparatus includes: a rotating member configured to rotate by being pushed by a leading edge of a sheet being conveyed; a sensor configured to output a signal corresponding to a position of the rotating member; a first abutting portion provided on the rotating member and with which the leading edge of the sheet being conveyed comes into contact; and a second abutting portion provided on the rotating member on a side opposite from the first abutting portion with respect to a rotation shaft of the rotating member and configured to come into contact with the sheet being conveyed in the course of the rotation of the rotating member by being pushed by the leading edge of the sheet being conveyed. | 06-28-2012 |
20120183309 | IMAGE FORMING APPARATUS - The image forming apparatus having a suction conveying portion, including a belt member arranged between a transfer portion and a fixing unit, for conveying sheet while suctioning at a conveying face of the belt member, a moving portion which moves the upstream side of a conveying face or downward, and a position controller which controls operation of the moving portion to move the upstream side of the conveying face to a position being close to the transfer portion from a receiving position after sheet fed from the transfer portion is received by the suction conveying portion which is located at the receiving position being apart from the transfer portion. | 07-19-2012 |
20120207486 | IMAGE FORMING APPARATUS PROVIDED WITH CONVEYANCE UNIT - An image forming apparatus includes an apparatus body, a conveyance unit withdrawably mounted on the apparatus body, and a driving mechanism disposed in the apparatus body. The conveyance unit has a power transmission member which transmits the driving force generated by the driving mechanism to the conveyance member. The power transmission member has a drive input section disposed on the outside of a housing for receiving the driving force. The driving mechanism is disposed on the apparatus body side, and has a drive output section engageable with the drive input section. The drive input section and the drive output section engage with each other in a mounted state that the conveyance unit is mounted on the apparatus body, and the engagement between the drive input section and the drive output section is released in a withdrawn state that the conveyance unit is withdrawn from the apparatus body. | 08-16-2012 |
20120213533 | FUSING APPARATUS AND IMAGE FORMING APPARATUS - Disclosed is a fusing apparatus including: a fusing section including a nipping section which conveys a recording medium while applying pressure and heat to the recording medium; an injecting section which is provided on a downstream side of a conveying direction of the recording medium with respect to the nipping section and which injects gas between a recording medium conveyed by the nipping section and attached to the fusing section and the fusing section; a detecting section which detects jamming of the recording medium in a conveying path of the recording medium; and a separating section which separates the injecting section from the fusing section when jamming of the recording medium is detected by the detecting section. | 08-23-2012 |
20120251133 | IMAGE FORMATION SYSTEM, METHOD FOR IMAGE FORMATION AND RECORDING MEDIUM - An image formation system wherein a paper discharge unit of a first image formation device which forms an image using a colored printing agent, is connected with a first paper feeder of a second image formation device which forms an image using a transparent printing agent, and a printing material formed by the first image formation device is fed to the second image formation device, the image a formation system comprising: a jam detector; and an image formation unit that, when detecting a jam in the second image formation device, causes a printing material to be fed to the second image formation device from a second paper feeder separate and causes the second image formation device to form an image upon detecting a jam in the second image formation device, and second image data inputted together with the first image data using colored and transparent printing agents. | 10-04-2012 |
20120281994 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a fixing unit with a nip, two rollers, a guide member, a detection unit and an urging unit. The detection unit is disposed substantially parallel to the guide member opposite to the guide member across a recording medium conveyed between the nip and the two rollers. The detection unit detects jamming of the recording medium on the basis of a pressure greater than a predetermined value applied by the recording medium between the nip and the two rollers. The distance between the guide member and the detection unit is greater than the distance between the guide member and the recording medium passing between the nip and the two rollers while being urged by the urging unit. | 11-08-2012 |
20130094867 | IMAGE FORMING APPARATUS - An image forming apparatus includes a carrying unit, a resistance unit, a jam detection unit, a paper detection unit and a control unit. Responding to the jam detection unit detecting that a jam occurring location is outside the resistance unit, the control unit sets a part of the carrying unit, the part including at least the resistance unit, as an accumulation unit where a remaining sheet is accumulated, in accordance with a size of the remaining sheet. The remaining sheet is detected by a paper detection unit when the jam occurs. The control unit releases, among a resistance roller pair and carrying roller pairs of the carrying unit, the rollers of a pair located in the accumulation unit from pressing against each other, and makes the carrying unit carry the remaining sheet to the accumulation unit. | 04-18-2013 |
20130108284 | IMAGE FORMING APPARATUS | 05-02-2013 |
20130121708 | IMAGE FORMING APPARATUS - An image forming apparatus includes a main body; a scanning unit disposed above the main body to be opened and closed; a paper discharging cover which is disposed on a top end of the main body below the scanning unit to open and close an opening formed on the main body and printing media are stacked; a fusing unit that is disposed behind the paper discharging cover inside the main body and includes a pressing roller and a heating roller; a first cover that is disposed above the fusing unit and guides a printing medium passed through between the pressing roller and the heating roller to the paper discharging cover; and a second cover disposed above the first cover to cover the first cover. When the second cover is opened and closed, the pressing roller and the heating roller are separated from and in contact with each other. | 05-16-2013 |
20130129364 | IMAGE FORMING APPARATUS - An image heating apparatus includes a heating roller; a nip forming member for forming the nip with the roller; a sheet jam sensor; a first controller for interrupting a heating operation when the sensor detects the sheet jamming, and for resuming the heating operation after the jamming is cleared; a rubbing member for rubbing a heating roller surface; a moving mechanism for moving the rubbing member to a position for spacing the rubbing member from the roller to a position for rubbing the roller surface; and a second controller for executing an operation of moving the rubbing member to the rubbing position to rub the heating roller surface when a predetermined condition is reached, wherein the second controller delays, when the condition is reached during a period in which a predetermined count of sheets pass the nip after the jam clearance, the moving operation to after the period. | 05-23-2013 |
20130142526 | IMAGE FORMING APPARATUS - In an image forming apparatus provided with a detachable fixing unit having fixing paired-rollers, a heating unit heats at least one of the fixing paired-rollers, and a temperature detecting unit detects a temperature of the detachable fixing unit. The image forming apparatus is further provided with an adjustment mechanism for preventing the detachable fixing unit from being taken out from the apparatus body, when the temperature detecting unit determines that the temperature of the detachable fixing unit exceeds a predetermined value, and allowing the detachable fixing unit to be taken out from the apparatus body, when the temperature detecting unit determines that the temperature of the detachable fixing unit is the predetermined value or less, whereby protecting users from getting their hands burned when taking out the detachable fixing unit from the apparatus body. | 06-06-2013 |
20130148988 | RECORDING MATERIAL CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A recording material conveying device includes a stripping claw being in contact with one rotary body of a first pair of rotary bodies, and a supporting member supporting a recording material curved when a jam occurs. The supporting member includes a supporting section located more away from the stripping claw than an imaginary straight line (C) passing a nip portion of the first pair of rotary bodies and a surface on a conveying path's side of the stripping claw, and the supporting section supports the recording material curved when the jam occurs. The recording material conveying device further includes a conveyance guide that is disposed on the downstream side from the supporting member and is displaced toward a pressed direction by a pressing force acting when the curved recording material comes into contact with the conveyance guide. | 06-13-2013 |
20130209113 | PRINTING APPARATUS, METHOD FOR CONTROLLING THE SAME, AND STORAGE MEDIUM - A printing apparatus notifies a user of a message that jamming may be attributed to a protective member yet to be removed, without providing any sensor for detecting the protective member. A method for controlling a printing apparatus that conveys a sheet includes detecting sheet jamming, determining a number of discharged sheets, and notifying the user to remove the protective member present on a conveyance path if the sheet jamming is detected and the number of discharged sheets is determined to be less than a predetermined number, and notifying the user of the sheet jamming if the sheet jamming is detected and the number of discharged sheets is determined to be equal to or greater than the predetermined number. | 08-15-2013 |
20130243447 | Image Forming Apparatus - An image forming apparatus includes a control device executing: a holding process of holding developer attached on an image carrier at a holding member; a moving process of moving the developer from the holding member to the image carrier; and a collection process of collecting the developer attached on the image carrier into a collection member. The control device executes the moving process and the collection process after completing printing. The control device sets a first flag when predetermined time period elapses from start of the moving process and unsets the first flag at start of the printing. When the first flag is not set at a startup time, the control device executes the moving process and the collection process before the printing. When the first flag is set, the control device omits the moving process before the printing. | 09-19-2013 |
20130272725 | IMAGE FORMING APPARATUS - According to embodiments, an image forming apparatus has a cassette section for holding sheets, a conveying section for conveying the sheet, an image forming section that forms the image on the sheet conveyed by the conveying section, a determining section that determines the type of the sheet fed from the cassette, and a display section that displays different messages corresponding to the type of the sheet if a jam of the sheet has occurred while the sheet is conveyed in the conveying section. The source of a sheet for printing thereon may be changed if a threshold number of paper jams occur using paper fed from a particular cassette. | 10-17-2013 |
20130279922 | METHOD AND APPARATUS FOR AVOIDING FUSER JAMS IN AN IMAGE PRODUCTION DEVICE - A method and apparatus for avoiding fuser jams in an image production device may include determining an entrance velocity of media entering a fuser nip during a print job, the fuser nip being the area of a fuser formed by a fuser roll meeting a pressure roll, determining an exit velocity of media exiting the fuser nip, determining a difference between the entrance velocity and the exit velocity, determining if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, wherein if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, retracting the pressure roll away from the fuser roll for a predetermined time period, determining if the predetermined time period has expired, wherein if the predetermined time period has expired, reposition the pressure roll to meet the fuser roll to reform the fuser nip, and resuming printing the print job. | 10-24-2013 |
20130287413 | IMAGE FORMING APPARATUS - The present invention provides an image forming apparatus which suppresses the occurrence of the dew condensation in the post-processing operation when the sheet is jammed and prevents additional sheet jam. When information indicating that a sheet is jammed is received, if the sheet detecting sensor detects the sheet on a switching member, a controller drives rollers until an upstream edge of the sheet in the sheet conveyance direction passes through the switching member. | 10-31-2013 |
20130294785 | IMAGE FORMING APPARATUS, METHOD OF CONTROLLING THE SAME, AND STORAGE MEDIUM - An image forming apparatus capable of distinguishing whether paper material retained in a sheet conveying path is an original or a recording material. An image forming apparatus includes an image reading unit that reads an original, a photosensitive drum that forms an image on a recording sheet, and a main motor and a double-sided-printing drive motor which convey the original and the recording sheet. Paper sheet sensors detect an occurrence of a jam of the original or the recording sheet. When a paper jam is detected, a CPU controls a display section to display a plurality of sheets retained in a conveying path, in a manner distinguishing between the original and the recording material. | 11-07-2013 |
20130302044 | INDICATOR AND IMAGE FORMING APPARATUS INCORPORATING SAME - An indicator disposed on an openably closable door disposed on a part of an exterior panel includes a light source disposed on a housing positioned in an interior of the door and a diffusion lens disposed on the door and opposed to the light source, wherein the light source is mounted on a support part disposed on the housing so that an optical axis of the light source is coincident with that of the diffusion lens. The door includes a recessed portion including a retainer, and the diffusion lens is supported in the recessed portion with the retainer pressing an external surface of the diffusion lens entirely so that the light from the light source is prevented from leaking from the surface of the door. | 11-14-2013 |
20130302045 | IMAGE FORMING APPARATUS THAT IS CAPABLE OF DOUBLE-SIDED PRINTING, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM STORING CONTROL PROGRAM THEREFOR - An image forming apparatus that is capable of using a residual sheet effectively even in a double-sided printing mode. A control unit controls to perform a double-sided image formation process to recording sheets. A detection unit detects a jam of the recording sheet. A determination unit determines whether residual sheets, which are recording sheets on the conveyance path other than a jamming sheet that generates a jam, are available in the image forming process resumed after the jam is removed based on the number of copies of sheets on which the same image is formed, the recording sheets on which images have been formed on one sides, and the latest recording sheet that was normally ejected. The control unit stops the process and ejects the residual sheets that are determined unavailable from the conveyance path when a jam is detected during the process. | 11-14-2013 |
20130308963 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus, by which a failure in control does not occur even if cutting wastes are conveyed by a conveying unit and an image forming apparatus having the sheet processing apparatus are provided. The sheet processing apparatus has a cutter unit for cutting a sheet, a dust box for accommodating the cutting wastes, a conveying belt pair which conveys the cut sheet, sensors for detecting the sheet conveyed by the conveying belt pair, and a controller for controlling conveyance of the sheet based on the signals detected by the sensors, wherein when the length of the sheet detected by the sensor is equal to or less than a predetermined amount, the controller does not determine the sheet as a sheet. | 11-21-2013 |
20130315610 | AUTOMATIC DOCUMENT FEEDER AND IMAGE FORMING APPARATUS INCLUDING THE SAME - According to an embodiment, an ADF includes: a sheet-feed cover unit; a switch unit to be switched on or off depending on whether the sheet-feed cover unit is open or closed and including a first terminal, to which a first voltage, by which a driving motor is driven, is input, and a second terminal connected to the driving motor; and an open/close-detection circuit unit that includes a first switch circuit and a second switch circuit. The first switch circuit is switched on or off based on a threshold voltage that is larger than a second voltage to be generated in the driving motor by a jammed-document removing motion and smaller than the first voltage. The open/close-detection circuit unit detects that the sheet-feed cover unit is closed when the second switch circuit is energized, but detects that the sheet-feed cover unit is open when the second switch circuit is de-energized. | 11-28-2013 |
20130322894 | Image Forming Apparatus Capable of Reliably Detecting Movement of Passage Defining Assembly - An image forming apparatus including: a passage defining assembly; a movable member; an assisting member; and a sensor. The passage defining assembly defines a conveying passage. The passage defining assembly is pivotally movable relative to the main casing between a first position for defining the conveying passage and a second position for expanding the conveying passage in size greater than that at the first position. The movable member is positioned to intersect the conveying passage and is pivotally movably supported to the passage defining assembly. The assisting member is configured to abut the movable member when the passage defining assembly is moved from the first position to the second position to allow the movable member to pivotally move relative to the passage defining assembly. The sensor detects whether the movable member is pivotally moved. | 12-05-2013 |
20140064748 | IMAGE FORMING APPARATUS CAPABLE OF REDUCING RECOVERY PRINTING TIME - An image forming apparatus capable of properly reducing recovery printing time, while reducing abrasion and deterioration of image bearing members. As an image formation mode determining method, a first method is selected before a print job is interrupted e.g. a jam, whereas for recovery printing, one of the first method and a second method is selected. In the first method, if an image to be formed is a color image, an image formation mode is set to an all-contact mode having an intermediate transfer belt brought into contact with all of photosensitive members, and if the image is a monochrome image, the mode is set to a partial-contact mode having the belt brought into contact only with a photosensitive member for black toner. In the second method, the mode is set to the all-contact mode for all pages on which image formation is to be performed. | 03-06-2014 |
20140079411 | IMAGE FORMING SYSTEM - A user-friendly image forming system is described which can notify users of the situation of sheets remaining on conveying routes when a paper jam occurs. The image forming system includes a conveyance unit for conveying sheets, a display unit for displaying information, a jam determination unit for determining if a paper jam occurs on the conveying routes, and a control unit for controlling the conveyance unit and the display unit on the basis of the result of determination by the jam determination unit and the position of the sheet managed by a paper management unit. When a paper jam occurs, the control unit determines whether or not a sheet remaining on the conveying route can be automatically discharged by driving the conveyance unit, and displays the result of determination on the display unit in association with the position of the sheet. | 03-20-2014 |
20140133872 | FIXING UNIT AND IMAGE FORMING APPARATUS HAVING THE SAME - A fixing unit which may be disposed in an image forming includes a heating roller, at least one pressure roller being in pressure contact with the heating roller to form a nip together with the heating roller, and a pressure releasing member partially restricting application of pressure to the nip. The nip includes an effective fixing section used for fixing. The pressure releasing member includes a pair of pressure releasing parts inserted into sections of the nip other than the effective fixing section, a connection part connecting the pair of pressure releasing parts, and guide parts extending from the connection part in the same direction as the pair of pressure releasing parts. The pressure releasing member prevents deformation of a portion of an elastic layer formed on the heating roller which corresponds to the effective fixing section. | 05-15-2014 |
20140140711 | METHOD FOR PROCESSING PAPER JAM IN IMAGE FORMING APPARATUS HAVING AT LEAST ONE OPTION CASSETTE, AND IMAGE FORMING APPARATUS THAT PERFORMS THE METHOD - An image forming apparatus including at least one option cassette, and a paper jam handling method performed in the image forming apparatus are provided. The paper jam handling method includes the operations of detecting whether paper jam occurs in the image forming apparatus, checking whether paper sheets exist on a transfer path of the image forming apparatus and on a transfer path of the option cassette, when the paper jam is detected, and leaving the paper sheet on the transfer path of the option cassette as it is and discharging the paper sheet caught on the transfer path of the image forming apparatus. Accordingly, paper damage or paper consumption may be prevented by not discharging a paper sheet caught on a transfer path of at least one option cassette during paper jam. | 05-22-2014 |
20140153937 | PRINTING SYSTEM, PRINTING APPARATUS, METHOD OF CONTROLLING THE SAME, AND STORAGE MEDIUM - A printing system, a printing apparatus, a method of controlling the same and a storage medium. The printing apparatus determines whether a sheet jam occurs while print processing is performed, interrupts the print processing in a case where it is determined that the sheet jam occurs, and conveys a sheet remaining on a sheet conveyance path to a sheet holding unit. The apparatus detects whether or not there is a sheet in the sheet holding unit, and makes a notification to a user instructing removal, from the sheet holding unit, of a sheet in a case where it is detected that there is a sheet in the sheet holding unit. | 06-05-2014 |
20140186060 | IMAGE FORMING APPARATUS - An image forming apparatus includes a drive roller, a rotary drive source, a rotation signal detection portion, and a removal determination portion. The drive roller is configured to rotate in contact with a printing medium. The rotary drive source is configured to supply a rotational force to the drive roller. The rotation signal detection portion is configured to detect a rotation signal indicating that the drive roller is rotated while the rotary drive source is being powered off. The removal determination portion is configured to determine whether the printing medium that has stopped in contact with the drive roller is removed, based on detection of the rotation signal by the rotation signal detection portion. | 07-03-2014 |
20140219668 | IMAGE FORMING APPARATUS DETECTING OCCURRENCE OF JAM - An image forming apparatus includes a timing roller for conveying paper in the image forming apparatus, a first motor receiving supply of electric power from a power source for driving the timing roller, a second motor receiving supply of electric power from the power source, a sensor for detecting whether a jam occurs at the conveyance roller, a drive relay for cutting off supply of electric power from the power source to the first and second motors, if occurrence of a jam is detected, and a control circuit for controlling an operating state of the second motor such that regenerative power produced at the first motor due to rotation of the conveyance roller is supplied to the second motor, if occurrence of a jam is detected. | 08-07-2014 |
20140219669 | IMAGE FORMING APPARATUS - An image forming apparatus ( | 08-07-2014 |
20140294405 | IMAGE FORMING APPARATUS INCLUDING FIXING PORTION - An image forming apparatus according to one aspect of the present disclosure includes print engine portion, paper sheet detectors, and control portion. Control portion stop paper sheet conveyance, when detecting occurrence of jam. Control portion determines fixing nip position which is position of the fixing nip portion on fixing stop paper sheet, on basis of outputs of paper sheet detectors. When fixing nip position is located at leading end side half of fixing stop paper sheet in paper sheet conveying direction, control portion rotates fixing motor in reverse direction to convey fixing stop paper sheet to upstream side in paper sheet conveying direction. When fixing nip position is located at rear end side half of fixing stop paper sheet in paper sheet conveying direction, control portion rotates fixing motor in a forward direction to convey fixing stop paper sheet toward a downstream side in paper sheet conveying direction. | 10-02-2014 |
20140314429 | IMAGE FORMING APPARATUS, IMAGE FORMING APPARATUS CONTROL METHOD, AND RECORDING MEDIUM STORING IMAGE FORMING APPARATUS CONTROL PROGRAM - An image forming apparatus and a method of controlling an image forming apparatus, and a non-transitory recording medium storing a program for controlling an image forming apparatus are provided. Each of the image forming apparatus, the method, and the program obtains and stores image identifiers, obtains and stores a passing image identifier for identifying an image to be output to a recording medium to which failure has occurred, transfers a developer image to the recording medium, holds the developer image, presses the recording medium against the holding member, generates and obtains a trigger signal used for determining timing at which a developer image reaches a transfer unit, detects an error in conveyance of the recording medium, and creates a gap between a holding member and a pressing member disposed opposite the holding member when an error is detected in conveyance of the recording medium. | 10-23-2014 |
20140328603 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image carrier, a transfer member, a power supply, and a control device that controls the power supply to output a DC-AC superimposed bias or a DC bias to transfer a toner image on the image carrier onto a recording medium. The control device controls the power supply to alternately output a first bias being a DC component the same in polarity as the DC bias and a second bias being a DC component opposite in polarity to the DC bias to clean the transfer member when image formation is not taking place. The first bias is output with two target output values including a first value and a second value lower than the first value. The second bias is output with one target output value. An output time of the second bias is longer than an output time of the first bias. | 11-06-2014 |
20140334833 | SHEET CONVEYING APPARATUS, METHOD FOR CONTROLLING THE SAME AND PROGRAM - There is provided a technique for reducing the user's labor of removing, from a printing apparatus, sheets which remain on a conveyance path when a jam occurs in the printing apparatus. To achieve this, a printing apparatus according to one aspect of the invention serves as a sheet conveying apparatus for conveying a sheet through a conveyance path, which identifies a sheet jam position on the conveyance path, conveys, to a first sheet retraction unit, a sheet on the upstream side in a conveyance direction with respect to the identified jam position, and conveys, to a second sheet retraction unit, a sheet on the downstream side in the conveyance direction with respect to the identified jam position. | 11-13-2014 |
20140334834 | IMAGE FORMING APPARATUS, RECORDING MEDIUM SUPPLY DEVICE, AND IMAGE FORMING SYSTEM - An image forming apparatus includes a first light-emitting unit, a second light-emitting unit, and a remaining-recording-medium detector. The first light-emitting unit is arranged on an outer surface of a recording medium setting unit on which recording media are set, and emits light while the recording media are being conveyed from the recording medium setting unit. The second light-emitting unit is arranged on or near an operating member that is to be operated when a recording medium jammed in a main body of the image forming apparatus is removed. The remaining-recording-medium detector detects presence or absence of a recording medium remaining in the main body of the image forming apparatus. The second light-emitting unit emits light when the operating member needs to be operated, based on a result of detection by the remaining-recording-medium detector. The first light-emitting unit and the second light-emitting unit emit light in different manners. | 11-13-2014 |
20150063836 | Fuser Member Conditioning Systems and Methods - Disclosed is a method of conditioning a fusing member having a top-release layer. The method includes heating the top-release layer to at least the melting temperature of the top-release layer while rotating the fusing member and while no pressure member engages the top-release layer, and cooling the top-release layer to less than the melting temperature of the top-release layer while rotating the fusing member. Other methods and devices are disclosed. | 03-05-2015 |
20150093125 | IMAGE FORMING APPARATUS HAVING OPENING FOR REPLACEMENT OF CARTRIDGE - An image forming apparatus includes a cartridge, a first unit, and a second unit. The first unit includes a sheet discharge tray and a guide. The cartridge has an accommodating portion configured to accommodate a color material. The guide is positioned below the sheet discharge tray and is configured to guide the cartridge to its assembled position. The first unit has an opening directing downward, and the guide has a lower end. The second unit includes a sheet supply tray positioned below the guide. The first unit and the second unit are pivotally movably connected to each other about a pivot axis to provide a first position and a second position. In the first position, the opening is closed by the second unit and the lower end of the guide is directed toward the sheet supply tray. In the second position, the opening is exposed to an outside. | 04-02-2015 |
20150093126 | IMAGE FORMING APPARATUS HAVING FUNCTION OF PRINTING ON INDEX SHEET, IMAGE FORMING SYSTEM, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM - An image forming apparatus includes a printing processing unit, a paper jam detection unit, and an operation display unit. The printing processing unit performs printing on a plurality of index sheets having index labels in different positions. The paper jam detection unit detects a paper jam in the plurality of index sheets. The operation display unit displays, when the paper jam is detected, a paper jam handling pattern selection screen for selecting a paper jam handling pattern of the printing processing unit. | 04-02-2015 |
20150104204 | IMAGE FORMING APPARATUS - An image forming apparatus comprising: an image bearing member which bears a toner image; a first driving portion which drives the image bearing member; a transfer portion which nips a sheet with the image bearing member and transfers the toner image to the sheet from the image bearing member; a sheet conveying portion which conveys the sheet with the toner image transferred by the transfer portion; a second driving portion which drives the sheet conveying portion; a sheet detector which detects the sheet between the transfer portion and the sheet conveying portion; and a controller which controls the second driving portion to drive the sheet conveying portion to convey the sheet after the first driving portion is stopped, so that the sheet detector can detect the sheet nipped between the image bearing member and the transfer portion. | 04-16-2015 |
20150125165 | SHEET FEEDER CONTROL METHOD, SHEET FEEDER, AND IMAGE FORMING APPARATUS - A sheet feeder control method for controlling a sheet feeder of an image forming apparatus includes feeding a sheet through a sheet feed path exposable to the exterior of the sheet feeder, detecting the feeding of the sheet at at least a first position on the sheet feed path, discharging the fed sheet to the exterior of the sheet feeder, detecting the discharge of the sheet at a second position downstream of the first position in a sheet feeding direction, detecting a sheet jam during the feeding and discharging of the sheet, and if the jammed sheet is detected at the second position but not at the first position, cancelling a malfunction state due to the sheet jam when the sheet stops being detected at the second position, irrespective of whether the sheet feed path is covered or exposed. | 05-07-2015 |
20150147073 | PRINTING SYSTEM, PRINTING APPARATUS, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM STORING PROGRAM - If a sheet is jammed while conveyed, whether the jammed sheet and a sheet preceding the jammed sheet have been generated by cutting an uncut sheet from which the jammed sheet is derived is determined. If the jammed sheet and the preceding sheet have not been generated, a printing apparatus re-prints a plurality of images including an image of the jammed sheet on a sheet, and the cutting apparatus cuts the re-printed sheet. If the jammed sheet and the preceding sheet have been generated, the printing apparatus re-prints a plurality of images including an image of the jammed sheet on a sheet, the cutting apparatus cuts the re-printed sheet, and a sheet that includes the same image as the preceding sheet is discharged to a different discharge destination from that of the preceding sheet. | 05-28-2015 |
20150147074 | CLEANER, AND IMAGE FORMING APPARATUS USING THE CLEANER - A cleaner includes a cleaning member electrostatically removing toner on an object; a first electricity supplier supplying a first voltage (or current) with polarity opposite to that of toner to the cleaning member; a toner collecting member collecting toner from the cleaning member; and a second electricity supplier supplying a second voltage with the polarity greater than the first voltage to the toner collecting member. The first and second electricity suppliers set plural setting values of the first and second voltages smaller than the targeted values of the first and second voltages, and first and second control members of the first and second electricity suppliers output first and second control signals while changing in step-by-step manner so that first and second output members of the first and second electricity suppliers apply the first and second voltage in step-by-step manner before the first and second voltages reach the targeted voltages. | 05-28-2015 |
20150309465 | IMAGE FORMING SYSTEM - The image forming system includes an unjamming execution section configured to execute unjamming for eliminating a sheet jam when the sheet jam is caused in the image forming system; and a control section configured to control the unjamming execution section to execute the unjamming in accordance with a position of the sheet jam or a portion of the long sheet causing the sheet jam, or both in the image forming system. | 10-29-2015 |
20150316887 | IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, AND IMAGE FORMATION CONTROL PROGRAM - An image forming apparatus includes: an image forming unit configured to form an image on a paper sheet; a conveying unit configured to convey the paper sheet to the image forming unit at a first conveyance speed and convey the paper sheet in the image forming unit at a second conveyance speed; a trouble detecting unit configured to detect a trouble; and a control unit configured to control the conveyance of the paper sheet in the conveying unit and the image formation on the paper sheet in the image forming unit, wherein, when the trouble detecting unit detects a trouble from the paper sheet being conveyed, and the control unit controls the conveying unit to perform a purging process to discharge a troubled paper sheet to the outside of the apparatus, the control unit controls a conveyance speed to be equal to the second conveyance speed. | 11-05-2015 |
20150338815 | IMAGE FORMING APPARATUS AND IMAGE FORMING SYSTEM - An image forming apparatus according to the present invention includes a control unit 111 which performs white paper cleaning by making remaining papers pass through a fixing device in automatic purge of conveying and discharging the remaining papers after an originating paper having caused a jam is removed when the jam has occurred in a paper conveyance path, and display units 115 and 111 which display the number of papers, which is obtained by subtracting the number of the papers having passed through the fixing device by the control unit for the white paper cleaning in the automatic purge from the set number of papers set in advance as the number of papers required to pass through the fixing device in the white paper cleaning, as the number of papers set for white paper cleaning after the automatic purge. | 11-26-2015 |
20150338816 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an image forming portion; a pair of rotatable members, at least one of which is an endless belt; a contact-and-separation portion; a driving portion; a detecting portion configured to detect presence or absence of the sheet and another object on a sheet feeding path downstream of a fixing nip with respect to a sheet feeding direction; and an output portion configured to output a signal indicating breakage of the belt upon detection of the presence of the object on the sheet feeding path by the detecting portion when said rotatable members are spaced from each other and the belt rotates. | 11-26-2015 |
20150355591 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a conveyance section configured to convey a sheet along a sheet feeding path; an image forming section configured to transfer and fix a toner image on a sheet conveyed by the conveyance section to form an image; and a plurality of cutting sections configured to cut a sheet that is conveyed through the sheet feeding path in a sheet width direction. | 12-10-2015 |
20150378300 | Sheet Conveyance Device and Image Forming Apparatus That Promptly Reduces Generation of Electromotive Force during Jam Process - A sheet conveyance device includes: a motor; an ON-OFF control unit, which selectively executes an ON control and an OFF control on the motor; a rotation control unit, which selectively executes a first-direction control and a second direction control; a jam detecting unit; an interlock switch; and a setting unit. The first-direction control sets a rotation direction of the motor as a first direction when the motor is rotated by the ON control. The second direction control sets the rotation direction of the motor as a second direction opposite to the first direction when the motor is rotated by the ON control. The setting unit sets the ON-OFF control unit to perform the ON control and sets the rotation control unit to perform the second direction control when the jam is detected by the jam detecting unit and the interlock switch has been turned off. | 12-31-2015 |
20150378301 | IMAGE FORMING DEVICE - The present invention provides an image forming device comprising: a conveying member that conveys recording media; a first sensor that is provided at a first detection position, and that detects absence or presence of a recording medium; a second sensor that is provided at a second detection position; a plurality of sensor dogs that are provided at a rotating/supporting member that drives the conveying member; a timing sensor that detects passage of the sensor dogs and determines detection timings of the first sensor and the second sensor; and a judging device that judges that there is a jam when a recording medium is continuously detected at the first sensor or the second sensor, and that judges that there is a jam when there is inconsistency in information relating to the absence or presence of a recording medium from the first sensor and the second sensor. | 12-31-2015 |
20160026142 | ELECTRONIC APPARATUS, IMAGE FORMING APPARATUS, AND STATE DETECTION METHOD - An electronic apparatus includes: a unit part that can be pulled out of a main unit; a cover part that is configured to, when being close, cover the unit part; a lock part that, when the cover part is being open, is movable to a first position where it is possible to pull the unit part out of the main unit and is movable to a second position where it is impossible to pull the unit part out of the main unit; a detection unit configured to, when being supplied with power, detect an internal state of the unit part; and a first power supply unit configured to shut off power supply to the detection unit when the lock part is moved to the first position, and supply power to the detection unit when the lock part is moved to the second position. | 01-28-2016 |
20160054697 | PAPER SHEET CONVEYING APPARATUS AND IMAGE FORMING SYSTEM - A paper sheet conveying apparatus includes: a first storage unit; a second storage unit; a first conveyance path to the first storage unit; a second conveyance path to the second storage unit; a conveyance unit configured to convey a paper sheet; a switching unit configured to switch a conveyance path of a paper sheet; a cutting unit configured to cut a paper sheet at a cutting position; a detecting unit configured to detect a jam; and a control unit, when a jam is detected on the first conveyance path, configured to cut a part of the paper sheet, the part is positioned on a side upstream from the cutting position, to a predetermined length, switch a conveyance path of the paper sheet from the first conveyance path to the second conveyance path, and store the cut paper sheet in the second storage unit through the second conveyance path. | 02-25-2016 |
20160109842 | AUDIO DETECTION OF MEDIUM JAM - A method of indicating a medium jam along a medium transport path; a plurality of microphones for detecting the sound of the medium being transported as it enters medium transport path and producing a signal representing the sound; a plurality of microphones for detecting the sound of the medium being transported in the medium transport path and producing a signal representing the sound in the medium transport; a plurality of microphones for detecting the sound of the medium being existing the medium transport path and producing a signal representing the sound of the medium existing the medium transport; a processor for producing sound values from the signal and computing the maximum sound responsive to the sound values per each microphone, and indicating the medium jam responsive to the sound values. | 04-21-2016 |
20160109843 | AUDIO DETECTION OF MEDIUM JAM - A method of indicating a medium jam along a medium transport path; a plurality of microphones for detecting the sound of the medium being transported as it enters medium transport path and producing a signal representing the sound; a plurality of microphones for detecting the sound of the medium being transported in the medium transport path and producing a signal representing the sound in the medium transport; a plurality of microphones for detecting the sound of the medium being existing the medium transport path and producing a signal representing the sound of the medium existing the medium transport; a processor for producing sound values from the signal and computing the maximum sound responsive to the sound values per each microphone, and indicating the medium jam responsive to the sound values. | 04-21-2016 |
20160124371 | POST-PROCESSING DEVICE AND IMAGE FORMING SYSTEM - A post-processing device receives sheets ejected one by one from an image forming device, stores, in a storage tray, a number of sheets included in one set on which post processing is to be performed at a post-processing position at once, performs conveyance processing of one stored set of a sheet stack to the post-processing position, ejects the sheet stack to an ejection unit, detects a paper jam of the sheet stack during conveyance processing, when detecting the paper jam, predicts a first time when a beginning sheet of a subsequent ejected set arrives at the storage tray and a second time when the sheet stack with the paper jam is completely ejected in case of retrying conveyance processing, judges that retrial of conveyance processing is possible when the first time is no earlier than the second time, and when judging that the retrial is possible, retries conveyance processing. | 05-05-2016 |
20160154364 | IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, AND IMAGE FORMING METHOD | 06-02-2016 |
20160161896 | IMAGE FORMING SYSTEM, IMAGE FORMING DEVICE, POST-PROCESSING DEVICE, AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM STORED WITH CONVEYANCE ABNORMITY DETECTION PROGRAM - An image forming system detects a first conveyance abnormality of a recording material when a time taken for the recording material conveyed along a conveyance path in the image forming system to pass a predetermined position exceeds a first threshold value, temporarily stops the conveyance of the recording material when the first conveyance abnormality is detected and changes the first threshold value to a second threshold value larger than the first threshold value when the conveyance of the recording material is temporarily stopped, and detects a second conveyance abnormality based on the second threshold when a re-conveyance is made to eject the recording material remaining in the conveyance path. | 06-09-2016 |
20160187833 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus performing automatic recovery from a paper non-feeding jam. It includes plural paper feeding cassettes, a sensing sensor, paper non-feeding jam determining part, and system control part. Plural paper feeding cassettes are detachably loaded inside apparatus main body. Sensing sensor is disposed in a carrying passage, and senses a paper sheet fed from paper feeding cassette. Paper non-feeding jam determining part determines whether or not a paper non-feeding jam has occurred in paper feeding cassette, on apparatus operation state and result of sensing by sensing sensor, and if a paper non-feeding jam has occurred, releases error state for paper non-feeding jam after a prescribed time period has elapsed, notifying that paper feeding is to be changed over. System control part controls changeover of paper feeding to that from another paper feeding cassette, on notification from paper non-feeding jam determining part. | 06-30-2016 |
20160378048 | IMAGE FORMING APPARATUS INCORPORATING GUIDING DEVICE - An image forming apparatus includes an apparatus body, an image forming device detachably attached to the apparatus body, a sheet conveying path through which a recording medium travels, a roller disposed along the sheet conveying path, a rotary body configured to rotate the roller manually to remove the recording medium in paper jam, and a guiding device. | 12-29-2016 |
20180024491 | IMAGE FORMING APPARATUS | 01-25-2018 |