Patent application number | Description | Published |
20100150597 | FIXING APPARATUS AND IMAGE FORMING APPARATUS - A center coil and side coils alternately operate at least once while a heat belt passes positions corresponding to the center coil and the side coils. A controller controls the operation time of the center coil and the operation time of the side coils according to comparison of detected temperature of a first temperature sensor and detected temperature of a second temperature sensor. | 06-17-2010 |
20100150625 | IMAGE FORMING APPARATUS AND FIXING APPARATUS - According to an embodiment of the invention, a fixing apparatus includes, a first endless body configured to be heated by a heating mechanism and maintain temperature reached by the heating, a second endless body configured to fix a visualizing agent supported by a sheet medium on the sheet medium in cooperation with the first endless body, a heat equalizing member configured to be located in a predetermined position on an inner side of the first endless body and apply, to the first endless body, tension for supplying heat, and a heat accumulating member configured to have a large heat capacity compared with a heat capacity of the heat equalizing member and to be located in a predetermined position on the inner side of the first endless body and apply, to the first endless body, tension for supplying heat. | 06-17-2010 |
20100266316 | TRANSFERRING AND FIXING DEVICE FOR PERFORMING FIXATION SIMULTANEOUSLY WITH TRANSFER - A transferring and fixing device includes an image carrier member to hold an unfixed toner image, a heat member to heat the unfixed toner image on the image carrier member, a pressure member which comes in press contact with the image carrier member, nips a recording medium with the image carrier member, and presses and conveys the recording medium, and a vibrating member to transmit vibrations to the recording medium passing through between the image carrier member and the pressure member. | 10-21-2010 |
20110135358 | FIXING DEVICE COMPRISING AUXILIARY HEAT GENERATING MEMBER AND MAINTAINING GAP RELATIVE TO SEPARATOR - A fixing device includes a fixing belt comprising a first metal heat generating layer; a pressure section facing an outer periphery of the fixing belt; an induction current generating coil situated near a peripheral surface of the fixing belt; a nip forming member situated inside the fixing belt and applying pressure to the fixing belt toward the pressure section; and an auxiliary heat generating member situated inside the fixing belt, comprising a second metal heat generating layer, extending to a position facing the induction current generating coil, and comprising a projecting portion contacting the fixing belt. | 06-09-2011 |
20110135359 | FIXING DEVICE INCLUDING AUXILIARY HEAT GENERATING MEMBER COMPRISING REGION WIDER THAN HEAT GENERATION REGION - According to one embodiment, a fixing device includes: a fixing belt comprising a first metal heat generating layer; a pressing unit opposing to the outer circumference of the fixing belt; an induction-current generating coil presented near the circumferential surface of the fixing belt; a nip forming member present on the inner side of the fixing belt and configured to press the fixing belt against the pressing unit; and an auxiliary heat generating member present in a heating region by the induction-current generating coil on the inner side of the fixing belt, having a second metal heat generating layer, and extending to the outer side of the heating region by the induction-current generating coil. | 06-09-2011 |
20110217096 | FIXING DEVICE - A fixing device includes a fixing belt comprising a first metal heat generating layer, a pressurizing unit which faces an outer circumference of the fixing belt, an induced current generating coil located within a hollow part of the fixing belt, a nip forming member which pressurizes the fixing belt to the pressurizing unit, and an auxiliary heat generating member located in a periphery of the fixing belt and comprising a second metal heat generating layer. | 09-08-2011 |
20110287358 | FIXING DEVICE - A fixing device includes a fixing belt including a metal layer, a pressing member to form a nip between the pressing member and the fixing belt, an induction current generating coil that faces an outer periphery of the fixing belt, and heats the fixing belt located at a nip position through a hollow inside of the fixing belt, and a coil controller supplies a high frequency to the induction current generating coil. | 11-24-2011 |
20120141175 | IMAGE FORMING APPARATUS AND IMAGE FORMING AND ERASING METHOD - An image forming apparatus according to an embodiment includes: an image erasing section including a first member which has an elastic layer and heats a recording medium having a thermally decolorizable toner image on the toner image side and a second member which erases the toner image by allowing the recording medium in cooperation with the first member; an image forming section which transfers a thermally decolorizable toner image onto the recording medium on which the toner image is erased to form an unfixed toner image; and an image fixing section including a third member which does not have an elastic layer and heats the recording medium on the unfixed toner image side and a fourth member which fixes the unfixed toner image by allowing the recording medium in cooperation with the third member. | 06-07-2012 |
20120263510 | FUSER OF INDUCTION HEATING TYPE - A fuser includes: a heat generating section including a heat generating layer and configured to rotationally travel; an induction-current generating section provided around the exterior of the heat generating section and including an exciting coil and an external ferrite core that covers the outer circumference of the exciting coil; an opposing section set in contact with the outer circumferential surface of the heat generating section; and an internal ferrite core arranged inside of the heat generating section in a position opposed to the exciting coil, a first center angle connecting both edges of the internal ferrite core and a rotation center of the heat generating section being larger than a second center angle connecting both edges of the external ferrite core and the rotation center of the heat generating section. | 10-18-2012 |
20120308278 | FUSER FOR EQUALIZING TEMPERATURE OF HEAT GENERATING SECTION - According to one embodiment, a fuser includes a fixing belt including a conductive layer, an induction-current generating section to electromagnetically induction-heat the conductive layer, an opposed section to form a nip in cooperation with the fixing belt, an auxiliary heat generating section electromagnetically induction-heated by the induction-current generating section, and a moving section to move the auxiliary heat generating section with respect to the fixing belt. | 12-06-2012 |
20130004218 | FUSER, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - Certain embodiments provide a fuser including a cylindrical fixing belt, a heating unit configured to heat the fixing belt, a pressurized section, a first nip forming section, a second nip forming section, and a moving mechanism. The pressurized section is arranged in contact with the fixing belt. The first nip forming section is fixed in a position where the first nip forming section presses the fixing belt against the pressurized section. The second nip forming section is configured to be movable between a position where the second nip forming section can press the fixing belt against the pressurized section and a position where the second nip forming section is separated from the fixing belt. The moving mechanism moves the second nip forming section. | 01-03-2013 |
20140050498 | FIXING DEVICE - A fixing device includes a fixing belt including a metal layer, a pressing member to form a nip between the pressing member and the fixing belt, an induction current generating coil that faces an outer periphery of the fixing belt, and heats the fixing belt located at a nip position through a hollow inside of the fixing belt, and a coil controller supplies a high frequency to the induction current generating coil. | 02-20-2014 |
20140341600 | FUSER FOR EQUALIZING TEMPERATURE OF HEAT GENERATING SECTION - According to one embodiment, a fuser includes a fixing belt including a conductive layer, an induction-current generating section to electromagnetically induction-heat the conductive layer, an opposed section to form a nip in cooperation with the fixing belt, an auxiliary heat generating section electromagnetically induction-heated by the induction-current generating section, and a moving section to move the auxiliary heat generating section with respect to the fixing belt. | 11-20-2014 |