Class / Patent application number | Description | Number of patent applications / Date published |
399018000 | Malfunction detection responsive | 37 |
20080212983 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - In an image forming apparatus and a control method thereof, it is determined whether an error has occurred in an output signal of a sensor for detecting a paper transferred in order to print an image, and a state change permission interval with respect to the output signal is newly set when the output signal is in an abnormal state, so that the detection time of the paper can be precisely recognized. | 09-04-2008 |
20080253779 | IMAGE FORMING APPARATUS, IMAGE PROCESSING APPARATUS, AND CONTROL METHOD THEREFOR - In performing multi-pass printing by using a printhead having a plurality of nozzles, a scan duty setting unit sets a printing amount for each nozzle for each main scan of the printhead based on the scan duty setting LUT. A scan duty setting LUT changing unit updates an initial scan duty setting LUT based on the faulty nozzle information detected by a faulty nozzle detection unit. At this time, the scan duty setting LUT is updated such that the scan duty which should be distributed to a faulty nozzle is distributed to a plurality of other nozzles and neighboring nozzles which print the same main scanning line as that printed by the faulty nozzle. | 10-16-2008 |
20090028586 | Image forming apparatus, image forming method, and control program therefor - An image forming apparatus, an image forming method, and a control program therefor. The apparatus includes an image processing control unit to process image information sent from an external device, a carriage to move in a main scanning direction according to a control signal sent from the image processing control unit and having a nozzle to discharge an ink onto a recording medium, a conveyance unit to convey the recording medium in a sub-scanning direction, and a conveyance failure detection unit to detect a status of the recording medium. The image processing control unit identifies a type of a conveyance failure among a plurality of types of conveyance failures based on the status of the recording medium output from the conveyance failure detection unit and sends a conveyance failure correction signal to perform an operation for retracting the carriage to a predetermined or desired position in the main scanning direction. | 01-29-2009 |
20090034993 | METHOD AND APPARATUS FOR FORMING IMAGE - A method and apparatus for forming an image determine if printing paper is properly picked up, and printing data is transferred to an intermediate transfer belt (ITB). When it is sensed that the printing paper is not properly picked up, picking up the printing paper is retried considering a revolution cycle of the ITB. Thus, the frequency of errors can be decreased, and a user's convenience can be increased because picking up the printing paper is automatically retried whenever mis-pick up occurs instead of displaying an error. Further, wasting of toner is decreased. | 02-05-2009 |
20090257760 | CONTROL APPARATUS, CONTROL METHOD, AND STORAGE MEDIUM - A control apparatus which makes it possible to realize a configuration for processing a plurality of print jobs efficiently without waste while meeting needs for performing a glossing process on prints. When a sheet printed in a first process is fed from a sheet feeder, the printing apparatus executes a second printing process for processing the fed sheet. When an interrupting factor occurs during execution of the second printing process to cause interruption of the processing, the interrupted processing is resumed on condition that the interrupting factor is removed. A resuming method of resuming the processing is determined based on contents of the processing in the second process. | 10-15-2009 |
20090297174 | CUSTOMER PART REPLACEMENT FEATURE UTILIZING HIGH FREQUENCY SERVICE INTERVAL FAULT AND SIGNATURE ANALYSES - A diagnostic system made part of or for use with a document handling device in which a customer is guided toward performance of at least one comparison means in a diagnostic routine analysis. The comparison means is selected from a group comprising (1) a first comparison comparing a fused print media and an unfused print media for presence of a defect, (2) a second comparison comparing an output print media and at least one image on a screen for a type of defect, and (3) a third comparison comparing a low-charged print media and a no-charged print media for qualities of the defect. The customer enters a selection based on results of the first, the second, or the third comparisons. The diagnostic system can identify a part causing a defect in the print media based on results of the comparisons. | 12-03-2009 |
20090310982 | IMAGE FORMING APPARATUS AND CONTROL METHOD FOR IMAGE FORMING APPARATUS - An image forming apparatus includes a first conveying unit that conveys a sheet, an image forming unit that forms an image on the sheet, a switch that switches a discharge destination for the sheet having the image formed thereon to a first direction and to a second direction, a stacking tray on which the sheet conveyed in the first direction is stacked, and a second conveying unit that conveys the sheet conveyed in the second direction. When occurrence of a jam is detected in the second conveying unit, the image forming apparatus controls the switch to switch the discharge destination of the sheet to the first direction. | 12-17-2009 |
20100150581 | IMAGE FORMING APPARATUS - Disclosed is an image forming apparatus including a unit in which a replaceable part is loaded, an image forming section to form an image on a recording medium by an operation of the unit, a malfunction detection section to detect a malfunction of the unit or the part and a control section to carry out a control of the image forming apparatus, and when an operation mode to executed an image forming by the image forming section is an image forming mode and when the operation mode which allows a maintenance/replacement of the unit is a maintenance/replacement mode, the control section changes a control of the image forming apparatus according to whether the operation mode when the malfunction was detected by the malfunction detection section is the image forming mode or the maintenance/replacement mode. | 06-17-2010 |
20110170883 | IMAGE FORMING APPARATUS - The image forming apparatus has a discharge device, an air blow device and a detection device, wherein an amount of blown air by the air blow device when the height of the recording materials detected by the detection device is higher than a preset first detection position is smaller than an amount of blown air by the air blow device when the detected height of the recording materials is lower than the first detection position. Thereby, there is provided an image forming apparatus which is improved in the alignment of the recording materials on the stacking portion. | 07-14-2011 |
20110200342 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a recording medium information acquisition portion that acquires carried recording medium information, which is information related to thickness of a recording medium to be carried as an image forming subject; a recording medium determination portion that determines whether there is a mismatch between the carried recording medium information acquired by the recording medium information acquisition portion and specified recording medium information, which is information related to thickness of a specified recording medium specified by a user as an image forming subject; a condition control portion that, if the recording medium determination portion determines the mismatch between the carried recording medium information and the specified recording medium information, changes a condition for transferring or fixing among image forming conditions corresponding to the specified recording medium to a condition for transferring or fixing corresponding to the recording medium to be carried in image formation on the recording medium to be carried; a condition change detection portion that detects a completion of a change in the condition for transferring or fixing by the condition control portion; and a carrying control portion that suspends carrying of the recording medium if the recording medium determination portion determines the mismatch between the carried recording medium information and the specified recording medium information and resumes carrying of the recording medium in response to a detection of the completion of the change in the condition for transferring or fixing by the condition change detection portion. | 08-18-2011 |
20110217054 | FIXING DEVICE AND IMAGE FORMING APPARATUS CAPABLE OF EFFECTIVELY SUPPRESSING THERMAL ENERGY RELEASED EXTERNALLY FROM DEVICE DUE TO THERMAL CONVECTION AND HOT AIR FLOW - A fixing device for fixing a toner image onto a recording paper includes a heating member for heating the recording paper, a pressing member for pressing the heating member by pressure-applying contact, a casing accommodating the heating member and the pressing member, and being provided with an exit port for discharging the recording paper, and a closing unit added to the exit port for keeping a temperature of the casing. The closing unit has a rotation member, and an opposed member forming a nip region together with the rotation member. | 09-08-2011 |
20120141148 | SHEET MEASURING APPARATUS AND IMAGE FORMING APPARATUS - A sheet measuring apparatus includes a first rotating member including a first peripheral surface portion that contacts a transported sheet; a second rotating member including a second peripheral surface portion that contacts the first peripheral surface portion; a first rotation amount detecting unit that detects a first rotation amount of the first rotating member; a second rotation amount detecting unit that detects a second rotation amount of the second rotating member; a sheet calculation unit that obtains a first rotating member correction value for correcting an error that is superposed on the second rotation amount due to a radius distribution of the first rotating member and that performs calculation related to the transported sheet; a radius distribution calculating unit that calculates a new radius distribution of the first rotating member; and an updating unit that updates the first rotating member correction value to a new first rotating member correction value. | 06-07-2012 |
20120321328 | IMAGE FORMING APPARATUS CAPABLE OF PREVENTING BELT FROM MEANDERING - An image forming apparatus includes a storage unit configured to store a first tilted position of a roller at which meandering of the belt can be prevented in a state that the belt abuts on the image bearing member and a second tilted position of the roller at which meandering of the belt can be prevented in a state that the belt is separated from the image bearing member, and a control unit configured to move the roller to the first tilted position if the belt abuts on the image bearing member while the belt is conveyed and move the roller to the second tilted position if the abutment of the belt on the image bearing member is cancelled while the belt is conveyed. | 12-20-2012 |
20130136461 | FIXING DEVICE AND IMAGE FORMING APPARATUS USING BELT INCLUDING RESISTANCE HEATER LAYER - Fixing device including: belt formed in endless shape and including resistance heater layer and annular electrodes provided on circumferential surface of resistance heater layer; pressing member pressed against belt to form nip through which sheet passes; electricity supplying members that, when in contact with electrodes, supply electricity to resistance heater layer; supporting member provided on opposite side of belt from electricity supplying members and supporting belt from inner circumferential side; displacement mechanism displacing electricity supplying members between first position in contact with electrodes, and second position separated away from electrodes; driving unit driving belt to rotate; driving controlling unit controlling rotation of belt and displacement of electricity supplying members; and trouble detecting unit detecting trouble while sheet is passing through nip. When trouble is detected, driving controlling unit controls driving unit to stop belt from rotating, and displacement mechanism to displace electricity supplying members to second position. | 05-30-2013 |
20130195473 | PRINTING APPARATUS, CONTROL METHOD FOR PRINTING APPARATUS, AND STORAGE MEDIUM - A printing apparatus is capable of controlling an anti-jam mode for two-sided printing to an optimal level according to each printing. A method for controlling a printing apparatus configured to print an image on a sheet includes fixing the image on the sheet at a first fixing temperature by a fixing unit, determining whether a sheet jam caused by the fixing unit has occurred, and controlling a temperature of the fixing unit such that the temperature is reduced from the first fixing temperature to a second fixing temperature lower than the first fixing temperature, when the sheet jam caused by the fixing unit is determined to have occurred. | 08-01-2013 |
20130308962 | IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING DRIVE CONDITION OF BELT - A control apparatus executes feedback control on an endless belt driven in a condition having a periodic disturbance to compensate an influence of the periodic disturbance. Detecting that a disturbance other than the periodic disturbance is added to the belt during the feedback control, the control apparatus obtains phase angles of the periodic disturbance on the timing when the other disturbance is added. Then, the based on the phase angles of the periodic disturbance thus obtained, the control apparatus obtains interpolation coefficients that respectively interpolate values of feedforward inputs in the case when the other disturbance is added at the time when the phase angles of the periodic disturbance stored in a memory are a plurality of typical angles, and adds values obtained by adding values obtained by multiplying the interpolation coefficients respectively by the feedforward inputs to a control value of feedback control as a correction value. | 11-21-2013 |
20140010558 | MALFUNCTION INFERRING APPARATUS, MALFUNCTION INFERRING METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM - A malfunction inferring apparatus includes an obtaining unit and an inferring unit. The obtaining unit obtains, from a first image forming apparatus and a second image forming apparatus which are used alternatively with each other by plural users, a first usage status of the first image forming apparatus and a second usage status of the second image forming apparatus. If a first change occurs in the first usage status and if a second change corresponding to the first change occurs in the second usage status, the inferring unit infers that a malfunction has occurred in any one of the first image forming apparatus and the second image forming apparatus, in accordance with the first usage status and the second usage status obtained by the obtaining unit. | 01-09-2014 |
20140212153 | IMAGE FORMING APPARATUS - According to the exemplary embodiments, there is provided an image forming apparatus that has an image forming mode and an image erasing mode. The image forming apparatus has a display unit configured to perform an error display at the time of conveyance failure of a recording medium in the image forming mode and at the time of conveyance failure of the recording medium in the image erasing mode. In the image forming apparatus, the display unit changes the content of the error display at the time of conveyance failure of the recording medium in the image forming mode and at the time of conveyance failure of the recording medium in the image erasing mode. | 07-31-2014 |
20150050034 | PRINTING APPARATUS USING TECHNIQUE TO HANDLE ERROR IN FINISHER, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM - An image forming apparatus which uses a printing control technique for, even when a third-party finisher whose performance is unknown is connected to the image forming apparatus, realizing a sheet-feeding judgment with consideration given to the performance of the finisher and preventing degradation of working efficiency. When an error notification is received from a post-processing apparatus, a type of a sheet discharged to the post-processing apparatus is identified. The identified type is managed as a type of a prohibited sheet prohibited from being discharged to the post-processing apparatus. | 02-19-2015 |
20150093124 | IMAGE FORMING APPARATUS - An image forming apparatus comprising a conveyance path of recording material comprises a door, when opened, the inside of the apparatus is exposed, and an interlock circuit which detects opening/closing state of the door. The detection unit of the door is arranged on the conveyance path. At the arranged position, the image forming apparatus comprises a registration sensor for detecting presence and absence of the recording material and delivery sensor. The CPU controls pressure to the recording material S passing the fixing nip portion formed by a pair of rollers arranged on the conveyance path. Also, the CPU decides whether the recording material exists at the fixing nip portion based on the respective detection result from the registration sensor and the delivery sensor. | 04-02-2015 |
20150098715 | IMAGE FORMING SYSTEM, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An image forming system includes a feed section, a transport section, a toner-image forming section, a fixing section, a problem detecting section, and an additional feed section. The feed section feeds a sheet. The transport section transports the sheet fed from the feed section. The toner-image forming section forms a toner image onto the sheet transported by the transport section. The fixing section fixes the toner image formed by the toner-image forming section onto the sheet. The problem detecting section detects a problem in a sheet transport operation. The additional feed section feeds an additional sheet from the feed section toward the fixing section if the number of sheets stopped by the transport section in accordance with detection of the problem by the problem detecting section and subsequently transported toward the fixing section after the sheet transport operation is resumed is smaller than a predetermined number. | 04-09-2015 |
399019000 | Job recovery | 9 |
20090232522 | PRINTING SYSTEM, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM STORING CONTROL PROGRAM THEREFOR - A printing system enabling a less wasteful and rapid printing restart for both cases where an interrupted job utilizes an ordered sheet, and where such a job utilizes a disordered sheet. A job processing unit executes a job outputting at least one sheet included in a set of a plurality of sheets in a case where sheets printed by a printing operation are outputted. A control unit controls to output, to a predetermined sheet-ejecting unit, a sheet which has not been outputted by the job processing unit among the set of a plurality of the sheets used by the job when the job executed by the job processing unit is interrupted. The job processing unit restarts to execute the interrupted job based on an instruction of a user after the sheet which has not been outputted by the job processing unit is outputted to the predetermined sheet-ejecting unit. | 09-17-2009 |
20100080574 | PRINTING DEVICE WITH SENSOR FOR OUTPUT TRAY - To solve the problem of incorrect jam recovery, a printer is equipped with one or more sensors to detect the number of sheets outputted to the output tray(s) of the printer. The number of sheets outputted to the tray(s) for a print job is counted, and compared to the number of pages to be printed in the print job. If the numbers do not match, the printer notifies the user of the mismatch. The user may then inspect the printed sheets to determine whether some pages are missing or extra pages have been printed, and take appropriate corrective actions. | 04-01-2010 |
20100196020 | PRINTING SYSTEM AND METHOD FOR HANDLING UNFIXED PAGES IN SUCH A PRINTING SYSTEM - A recording medium is moved to a transfer printing station and print images are transfer-printed. The recording medium is transported to a fixing station. A print stop is initiated whereby the recording medium is halted, a further transfer printing is prevented, and a fixing is deactivated. It is checked whether a transfer-printed but unfixed page is still located in the printing apparatus. If so, a warning notification is automatically generated. A query is made as to whether an operating command has been input. If so, it is checked whether the unfixed page would also be output unfixed. If no, the operating command is executed. If yes, the print stop is automatically maintained. It is also inspected as to whether the unfixed page would be output upon execution of an additional operating command. If no, the additional operating command is executed. If yes, an error message is automatically generated. | 08-05-2010 |
20110002700 | IMAGE FORMING APPARATUS - An image forming apparatus is provided. The image forming apparatus includes: a printing section configured to perform duplex printing including printing N sheet on a first side thereof and subsequently printing M sheet on a second side thereof, wherein M is equal to or smaller than N, a suspension section which is configured to suspend the duplex printing in response to receiving a request for image adjustment during the duplex printing, while the sheet having the first face thereof printed is caused to stay in the image forming apparatus during the suspension, a correction section which is configured to update a correction data for image adjustment while the duplex printing is suspended by the suspension section, and a restarting section which is configured to restart the duplex printing suspended by the suspension section after the correction data has been updated by the correction section. | 01-06-2011 |
20110299862 | PRINTING APPARATUS, METHOD FOR CONTROLLING THE SAME, AND STORAGE MEDIUM - An image forming apparatus control unit interrupts print processing when it determines that a predetermined factor has occurred. When the print processing is restarted, the image forming apparatus control unit controls a printing unit to perform print processing on a specific number of sheets and then, after determining that a result of inspection for the specific number of sheets does not indicate a print failure, start print processing on sheets following the specific number of sheets. | 12-08-2011 |
20130195474 | IMAGE-FORMING APPARATUS AND METHOD FOR CONTROLLING IMAGE-FORMING APPARATUS - An image-forming apparatus includes an image formation section, a placement unit, a paper feed rotating body, a detecting body, a storage unit, and a determination unit. The detecting body detects the arrival of the paper having been supplied by the paper feed rotating body. The storage unit stores measurement data that is based on a measurement time from the start of paper feeding until when the detecting body detects the arrival. The determination unit finds the average time of the measurement times and, when the average time is longer than a predetermined theoretical time, establishes as the paper-non-feed jam detection time a time obtained by adding the absolute value of the time difference between the theoretical time and the average time to a detection reference time. The determination unit determines whether or not a paper-non-feed jam has occurred with the paper-non-feed jam detection time. | 08-01-2013 |
20140064747 | PRINTING APPARATUS, PRINTING METHOD, AND STORAGE MEDIUM - A printing apparatus includes a controller that, upon receipt of a printing suspension instruction during printing on a print medium by a printing device, causes a conveyor to stop a conveyance of the print medium from an upstream side to a downstream side after printing a mark on the print medium, causes the conveyor to convey the print medium from the downstream side to the upstream side, then to stop the conveyance of the print medium after a sensor detects the mark printed on the print medium, and upon receipt of a printing restart instruction, causes the conveyor to convey the print medium from a returned position where the print medium is stopped to the downstream side and controls a timing of a printing based on a detection of the mark by the sensor. | 03-06-2014 |
20140219667 | IMAGE PROCESSING APPARATUS - According to embodiments, provided is an image processing apparatus that includes an erasing unit, an operation panel, and a control unit. The erasing unit erases an image formed on a conveyed recording medium. The operation panel receives the setting of the number of the recording mediums from which the image is removed. The control unit continues the image erasing process until a value obtained by counting the number of the recording mediums conveyed to the erasing unit by including the number of the recording mediums causing a conveyance error reaches the setting number when resuming the image erasing process after stopping the image erasing process in the event of the conveyance error of the recording medium. | 08-07-2014 |
20150086224 | Developer Cartridge - A developer cartridge is described. The developer cartridge detachably mountable on a tandem type photosensitive unit slidable to a drawn-out position and a mounted position with respect to an image forming apparatus body may include a casing; a developer carrier rotatably supported on one end portion of the casing for carrying a developer; a pair of upright portions arranged on another end portion of the casing at an interval from each other in the axial direction of the developer carrier to extend from another end portion of the casing in a detaching direction for the developer cartridge; and an elastically deformable coupling portion extending in the axial direction of the developer carrier for coupling the upright portions with each other. | 03-26-2015 |
399020000 | Purge | 7 |
20090087200 | Image Recording Apparatus - An image recording apparatus is disclosed. The apparatus includes a print engine; a fixing unit; a medium sensor that outputs a detection signal when a recording medium passes said medium sensor; and a controller that determines from the detection signal whether an abnormal transportation of the recording medium has occurred or not, wherein when said controller determines from the detection signal during continuous printing that a following one of two consecutive pages of recording medium remains in said print engine after removing a preceding one of the two consecutive pages that has been abnormally transported, said controller controls said fixing unit to a predetermined temperature and subsequently allows the following one of the two pages to pass through said fixing unit at a first speed so that the following one of the two pages is discharged from the image recording apparatus. | 04-02-2009 |
20090110411 | PRINTING SYSTEM AND METHOD FOR PURGING PRINT MEDIA - In a printing system having multiple document finishing assemblies, it is sometimes necessary to purge the system of print media which, as a result of a jam or other operational malfunction, remain within the printing system in an unfinished, unprinted, or otherwise undesirable condition. These “purge sheets” can be delivered to a separate purge tray provided at each document finishing assembly. A printing system having numerous document finishing assemblies will typically have a corresponding number of purge trays which must be cleared individually by an operator, which is inefficient and burdensome. The present disclosure provides a printing system and method which, in the event of a jam, consolidates purge sheets into a minimal number of purge trays. By minimizing the number of purge trays which must be cleared by an operator, efficiency gains and productivity increases can be realized. Additionally, the disclosed printing system is responsive to subsequent or multiple jams by diverting purge sheets to the minimal number of remaining purge trays. Exemplary embodiments of the disclosed purging algorithm are presented wherein purging is coordinated by the document finishing assemblies using a decentralized daisy-chain architecture, and wherein the purging is coordinated by a controller using a centralized architecture. | 04-30-2009 |
20090310983 | IMAGE FORMING APPARATUS - Disclosed is an image forming apparatus that includes a recording medium feeding unit that feeds a recording medium to a predetermined conveyance path; a conveyance unit that conveys the recording medium fed from the recording medium feeding unit on the conveyance path; a conveyance status detection unit that detects a conveyance status of the recording medium placed on the conveyance path; a control unit that controls operations of the recording medium feeding unit, the conveyance unit, and the conveyance status detection unit; and an accommodation unit that accommodates the recording medium. The control unit controls the feeding of the recording medium with the recording medium feeding unit and the conveyance of the recording medium with the conveyance unit based on a detection result of the conveyance status detection unit, thereby discharging the recording medium present in the image forming apparatus to the accommodation unit. | 12-17-2009 |
20110236041 | IMAGE FORMING DEVICE - An image forming device which can feed a recording paper sheet of a normal size from a paper sheet feed part by a paper sheet feed roller unit to a transport roller unit on a next stage; can form an image on the paper sheet by feeding the sheet from the transport roller unit to an image forming part; and have the paper sheet feed roller unit transport the paper sheet in feeding the paper sheet from the transport roller unit to the image forming part, the image forming device comprising a paper sheet transport path which leads the paper sheet from the paper sheet feed roller unit to the transport roller unit; a paper sheet detection sensor disposed downstream of the paper sheet feed roller unit but upstream of the transport roller unit, facing the paper sheet transport path; and a size error judgment part which is for detecting a recording paper sheet size error when a small size recording paper sheet is mixed in the recording paper sheets of the normal size. | 09-29-2011 |
20120114342 | IMAGE FORMING APPARATUS - An image forming apparatus includes a transporting section including a transport path for transporting a recording medium; an image forming unit that forms an image on the recording medium that is transported at the transporting section; a fixing device that fixes the image formed on the recording medium at the image forming unit while heating the image; and a controller that performs control so that Pw05-10-2012 | |
20140241737 | SHEET PROCESSING APPARATUS, IMAGE FORMING SYSTEM, AND SHEET PROCESSING CONTROL METHOD - When performing a purging process in which remaining sheets remaining in the image forming system are gathered and ejected to any of trays in an ejection section, any of the trays other than a valid sheet tray to which a sheet having a normally formed imager has been ejected is set as a purge tray which is a tray to which the remaining sheets are to be ejected by the purging process, and the ejection section is controlled to eject the remaining sheet to such purge tray | 08-28-2014 |
20150104203 | IMAGE FORMING APPARATUS AND RECORDING-MATERIAL-TRANSPORTING DEVICE - An image forming apparatus includes an image forming section that forms an image, a transport path section along which a recording material that is yet to undergo or has undergone image formation performed by the image forming section is transported, a transport unit that is provided in the transport path section and transports the recording material while nipping the recording material, an operated portion that is operated by a user and activates the transport unit such that the recording material is removed from the transport unit, and a notification unit that notifies a completion of the operation of the operated portion on the basis of a position of the recording material that is removed from the transport unit by the user's operation of the operated portion. | 04-16-2015 |