Patent application number | Description | Published |
20090110447 | IMAGE FORMING APPARATUS AND ELECTRIC DISCHARGE DEVICE - An image forming apparatus includes a diode for restraining deterioration of an electric discharge device caused when a voltage applied to a discharge electrode and a shield electrode is switched. By switching the voltage at only one position using the diode, both of the voltage applied to the discharge electrode and the voltage applied to the shield electrode can be switched simultaneously. | 04-30-2009 |
20090202266 | IMAGE FORMING APPARATUS - The image forming apparatus, in the case where image forming is performed on a recording medium whose size covers a position of a second temperature detection element perpendicularly disposed to the recording medium conveyance direction, when the detected temperature rises to a predetermined temperature during execution of the first power supply control, a first power supply control is switched to a second power supply control. In the case where image forming is performed on a recording medium whose size does not cover a position of the second temperature detection element, when the detected temperature rises to a predetermined temperature during execution of the first power supply control, a conveyance control portion executes a control for extending the conveyance interval of the recording medium. Thus, an unduly large temperature rise in the non-sheet passing portion is prevented, and a good quality image can be provided without glossy unevenness in one sheet. | 08-13-2009 |
20090257793 | IMAGE FORMING APPARATUS - The image forming apparatus includes an image forming portion forming a toner image on a recording material, and a fixing portion heating and fixing the toner image formed on the recording material to the recording material, wherein the apparatus has a cleaning mode in which the fixing portion is cleaned, and when the cleaning mode is set, the image forming portion forms a predetermined toner image on the recording material, and the fixing portion then heats and fixes the predetermined toner image to the recording material to form a cleaning sheet which is heated and conveyed to clean the fixing portion. By the virtue of the present invention, it achieves high cleaning performance in which the fixing portion is cleaned by the cleaning sheet. | 10-15-2009 |
20100316404 | IMAGE FORMING APPARATUS - The image forming apparatus includes a fixing portion, a temperature detection element, and a power control portion, wherein the power control portion is capable of setting a first power supply control mode for supplying power according to the detected temperature for each one control cycle, a second power supply control mode for supplying power according to the detected temperature for each one control cycle and a third power supply control mode for supplying predetermined power, and switches, immediately before a leading edge of the recording material enters the fixing portion, a state of supplying the power in the first power supply control mode to a state of supplying the power in the second power supply control mode, and then switches the state of supplying the power in the second power supply control mode to a state of supplying the power in the third power supply control mode. | 12-16-2010 |
20110150545 | IMAGE HEATING APPARATUS AND HEATING BELT FOR USE IN THE IMAGE HEATING APPARATUS - A cylindrical heat generating belt for use in an image heating apparatus includes a heat generating layer, in which an electroconductive filler is dispersed in a resin material, for generating heat by being supplied with electric power; and a surface parting layer. The heat generating layer has a sheet resistance, with respect to a generatrix direction of the heat generating belt, which is larger than that with respect to a circumferential direction of the heat generating belt. | 06-23-2011 |
20110150548 | IMAGE FORMING APPARATUS - The present invention provides an image forming apparatus including an upstream conveying portion, a downstream conveying portion, and a loop detector, wherein the image forming apparatus further includes a driving portion which moves the contact portion to a projecting position where the sheet conveying path is in contact with a conveyed sheet and to a retracted position where the sheet conveying path is not in contact with the conveyed sheet, and a controlling portion which controls the driving portion such that the contact portion is moved from the projecting position to the retracted position before a tip end of a sheet which enters the sheet conveying path from the upstream conveying portion reaches the contact portion. | 06-23-2011 |
20110150549 | IMAGE FORMING APPARATUS - The present invention provides an image forming apparatus having an upstream conveying portion, a downstream conveying portion, and a contact loop detection portion to detect a loop of the sheet formed between the upstream conveying portion and the downstream conveying portion, wherein the loop detection portion, includes a sensor that outputs the detection signal, a contact portion that protrudes into a sheet conveyance path between the upstream conveying portion and the downstream conveying portion as if to come into contact with the sheet conveyed through the sheet conveyance path and causes the sensor to output the detection signal by moving in contact with the sheet, and a contact force changing portion that changes a contact force with which the contact portion comes into contact with the sheet conveyed through the sheet conveyance path according to a type of the sheet conveyed through the sheet conveyance path. | 06-23-2011 |
20110182632 | IMAGE FORMING APPARATUS - The image forming apparatus includes an image forming portion forming a toner image on a recording material, and a fixing portion heating and fixing the toner image formed on the recording material to the recording material, wherein the apparatus has a cleaning mode in which the fixing portion is cleaned, and when the cleaning mode is set, the image forming portion forms a predetermined toner image on the recording material, and the fixing portion then heats and fixes the predetermined toner image to the recording material to form a cleaning sheet which is heated and conveyed to clean the fixing portion. By the virtue of the present invention, it achieves high cleaning performance in which the fixing portion is cleaned by the cleaning sheet. | 07-28-2011 |
20110305475 | IMAGE FORMING APPARATUS - The image forming apparatus, in the case where image forming is performed on a recording medium whose size covers a position of a second temperature detection element perpendicularly disposed to the recording medium conveyance direction, when the detected temperature rises to a predetermined temperature during execution of the first power supply control, a first power supply control is switched to a second power supply control. In the case where image forming is performed on a recording medium whose size does not cover a position of the second temperature detection element, when the detected temperature rises to a predetermined temperature during execution of the first power supply control, a conveyance control portion executes a control for extending the conveyance interval of the recording medium. Thus, an unduly large temperature rise in the non-sheet passing portion is prevented, and a good quality image can be provided without glossy unevenness in one sheet. | 12-15-2011 |
20120148281 | IMAGE FORMING APPARATUS HAVING FIXING UNIT FOR FIXING UNFIXED TONER IMAGE FORMED ON RECORDING MATERIAL ONTO RECORDING MATERIAL BY HEAT - Corrected power for compensating for a reduction in the temperature of an endless belt that accompanies the entry of a recording material into a fixing nip portion is adjusted by correcting the power supplied to a fixing unit when the recording material enters the fixing unit with a correction power based on a difference between the update time of a power updating period and the time of the entry of the recording material. | 06-14-2012 |
20120148282 | IMAGE FORMING APPARATUS CONTROLLING POWER SUPPLIED TO FIXING UNIT - Adjusting the start timing for conveying a printing material from a printing material conveying unit based on a power supply update period for power supplied to a heater allows proper power correction timing to be attained for compensating for a drop in temperature of the endless belt following the printing material entering a fixing nip portion. | 06-14-2012 |
20120195654 | FIXING ROTATING MEMBER AND FIXING DEVICE EQUIPPED WITH THE SAME - A fixing rotating member configured to, together with a pressure member, pinch and transport a recording material carrying an image includes a base material and a releasing layer, wherein the releasing layer is made of at least one fluorine resin selected from among tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, ethylene-tetrafluoroethylene copolymer, and tetrafluoroethylene-hexafluoropropylene copolymer, the fluorine resin containing at least one type of polymer selected from among polyvinylidene fluoride, polyacrylonitrile, and polymethyl methacrylate, and monomer electrolyte. | 08-02-2012 |
20120195657 | PRESSURE ROLLER AND FIXING DEVICE EQUIPPED WITH THE SAME - A pressure roller for use in a fixing device includes a core metal, an elastic layer, and a releasing layer. The releasing layer is made of at least one fluorine resin selected from among tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, ethylene-tetrafluoroethylene copolymer, and tetrafluoroethylene-hexafluoropropylene copolymer. The fluorine resin contains at least one polymer selected from among polyvinylidene fluoride, polyacrylonitrile, and polymethyl methacrylate, and monomer electrolyte. | 08-02-2012 |
20120308253 | FIXING APPARATUS - A fixing apparatus includes: two rotatable members, for forming a nip, including a region where an outer diameter is increased from a longitudinal central portion toward a longitudinal end portion; a heater; and a controller for controlling a heat generation distribution of the heater. The controller is capable of controlling the heater so that the heat generation distribution of the heater is such that a heat generation amount at the longitudinal end portion is larger than that at the longitudinal central portion in a period from start of the heater until the recording material reaches the nip. A ratio of the heat generation amount at the longitudinal end portion to that at the longitudinal central portion is larger when a cumulative amount of use of the fixing apparatus is larger than a predetermined amount than when the cumulative amount of use is smaller than the predetermined amount. | 12-06-2012 |
20130209130 | IMAGE FORMING APPARATUS - The image forming apparatus includes a fixing portion, a temperature detection element, and a power control portion. The power control portion is capable of setting a first power supply control mode for supplying power according to the detected temperature for each one control cycle, a second power supply control mode for supplying power according to the detected temperature for each one control cycle and a third power supply control mode for supplying predetermined power, and switches, immediately before a leading edge of the recording material enters the fixing portion, a state of supplying the power in the first power supply control mode to a state of supplying the power in the second power supply control mode, and then switches the state of supplying the power in the second power supply control mode to a state of supplying the power in the third power supply control mode. | 08-15-2013 |
Patent application number | Description | Published |
20090125586 | SCREEN SHARING SYSTEM AND DATA TRANSFER METHOD - The client's screen includes a shared area that displays a portion of the server's screen information. The present invention performs a remote event from the client upon the server by causing an input event that is instigated upon the shared area thereof to be replayed upon the server. When this circumstance occurs, the client detects the instruction for the transfer of data to the shared area thereof, requests the transfer of data from the server, receives the data that is thereby transferred from the server, and develops the data thus received to the client's memory space. Upon receipt of the request for transfer of data from the client, the server converts the data that is stored within the server's own memory space into a state wherein the data thus stored is capable of being transferred, and transmits the data thus converted to the client. | 05-14-2009 |
20090251489 | GRAPHICS RENDERING AND EDITING APPARATUS AND METHOD - A graphics rendering and editing apparatus includes a rendering unit configured to render a graphic object, a position specifying unit configured to specify a pre-change position and a post-change position of an arbitrary point on the graphic object, an attribute specifying unit configured to specify a deformation attribute of the graphic object, the deformation attribute being related to how the graphic object is deformed as a position of the arbitrary point changes, and a deformation unit configured to deform, when the position specifying unit has specified the pre-change position and the post-change position the graphic object in accordance with the pre-change position, the post-change position, and the attribute specified by the attribute specifying unit. | 10-08-2009 |
20130139066 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND STORAGE MEDIUM - An information processing apparatus according to the present invention includes a first determination unit configured, if a first display region of a first display unit of the other apparatus on which the data is displayed is changed, to determine whether to receive a notification relating to the change in the first display region, a receiving unit configured to receive a notification relating to the change in the first display region according to a determination result determined by the first determination unit, and a changing unit configured to change a second display region of a second display unit of the information processing apparatus on which the data is displayed based on the notification relating to the change in the first display region received by the receiving unit. | 05-30-2013 |
20150244999 | IMAGE PROCESSING APPARATUS THAT DEVELOPS PHOTOGRAPHED DATA, IMAGE PROCESSING METHOD, AND RECORDING MEDIUM - An image processing apparatus which is capable of satisfactorily developing photographed data by making up a difference in saturation level between color signals through replacement of a color signal. Saturation levels of respective color signals in photographed data are calculated, and an upper limit of a dynamic range in the photographed data is determined. Based on the upper limit, replacement ratios for the color signals, which change toward the saturation levels of the color signals, are obtained. Each of the color signals is adjusted according to the upper limit. Based on the replacement ratios, a replacement process is carried out in which a color signal of which the saturation level is low is replaced with a color signal of which the saturation level is high. The photographed data on which the replacement process has been carried out is subjected to a predetermined process to obtain developed data. | 08-27-2015 |
20150245000 | IMAGE PROCESSING APPARATUS THAT PERFORMS DEVELOPMENT BY ADJUSTING SATURATION LEVEL OF EACH COLOR SIGNAL, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM - An image processing apparatus capable of performing development by adjusting the saturation level of each color signal, without losing gradation in a high-luminance area. Saturation levels of color signals of three colors are calculated on photographed data. Color signal values in each pixel of the photographed data are acquired as pixel information. If it is determined, based on the saturation levels and the pixel information, to perform substitution, substitution for a color signal having the second highest saturation level is performed according to a color signal having the highest saturation level, and substitution for a color signal having the lowest saturation level is performed according to the color signals having the highest and second highest saturation levels. Predetermined processing is performed on photographed data on which substitution processing has been performed to thereby generate the developed data. | 08-27-2015 |