Patent application number | Description | Published |
20080285996 | FIXING DEVICE, IMAGE FORMING APPARATUS, AND HEATING CONTROL METHOD FOR FIXING DEVICE - A fixing device includes a heat roller having a degaussing alloy material, an induction heating member for exciting the heat roller, an inverter circuit for giving power at a predetermined frequency to the induction heating member, and a control unit, and when driving at a first drive frequency and fixing small size sheets by continuous passing, a local temperature rise occurs at an end part of the heat roller, and the end part approaches the Curie temperature, and when impedance of the inverter circuit reduces and an excessive current flows in the circuit, the fixing device drives at a higher second drive frequency, thereby increases a resistance of the heat roller by an epidermal effect of magnetic flux, increases an apparent resistance of the inverter circuit, makes it possible to use a flowing current within a normal range, heating a central part of the heat roller, and continues the fixing. | 11-20-2008 |
20100124447 | IMAGE FORMING APPARATUS AND FUSER APPARATUS - According to an embodiment of the invention, a heat uniforming member, which has an outer diameter smaller than an inner diameter of a hollow member and in which thermal deformation generated by thermal expansion remains, is set in the inside of the hollow member having a center axis, support members are set to both ends of the hollow member to enable supporting of ends of the heat uniforming member, and an endless body having a uniform thermal distribution is formed by heating the hollow member, the heat uniforming member and the support member at a specified temperature for a specific time and causing the heat uniforming member to adhere closely to an inner wall of the hollow member. | 05-20-2010 |
20100171783 | IMAGE RECORDING APPARATUS - An image recording apparatus includes a carrying unit that carries a recording medium in a carrying direction. A recording head records on the recording medium carried by the carrying unit by ejecting ink. An application unit applies a treatment liquid to the recording medium carried by the carrying unit. An inclination correction unit is disposed on a downstream side in the carrying direction from the application unit and an upstream side in the carrying direction from the recording head and corrects an inclination of the recording medium carried by the carrying unit. | 07-08-2010 |
20110081156 | IMAGE FORMING APPARATUS AND FUSER UNIT - According to one embodiment, a fuser including, a first endless member into which fluid, which retains heat, can flow, a second endless member configured to apply pressure to the first endless member, a fluid moving mechanism configured to move the fluid to the first endless member and move the fluid from the first endless member, and a heat source configured to raise temperature of the first endless member to a predetermined temperature. | 04-07-2011 |
20110081175 | IMAGE FORMING APPARATUS AND FUSER UNIT - According to one embodiment, a fuser including, a first endless member including a gel-like silicone material and configured to apply heat to an object, a second endless member configured to apply pressure to the first endless member, and a heat source configured to raise temperature of the first endless member to predetermined temperature. | 04-07-2011 |
20110199447 | IMAGE FORMING APPARATUS AND DRYING METHOD USED IN IMAGE FORMING APPARATUS - According to one embodiment, an image forming apparatus has an image forming unit, a heat pump, and a blow-out port. The image forming unit forms an image on a medium. The heat pump generates air of a decreased low humidity. The low-humidity air generated by the heat pump is blown from the blow-out port to the medium on which the image is formed by the image forming unit. | 08-18-2011 |
20110199448 | IMAGE FORMING APPARATUS AND DRYING METHOD IN IMAGE FORMING APPARATUS - According to one embodiment, an image forming apparatus includes an image forming unit, a tray, a heating mechanism, a blower, and a body casing. The image forming unit forms an image on an image forming medium. The tray stacks the image forming medium, having an image formed thereon by the image forming unit, on the tray. The heating mechanism warms air. The blower sends out the air warmed by the heating mechanism. The body casing has a discharge opening. The discharge opening is used to discharge the air sent from the blower to the image forming medium stacked on the tray. | 08-18-2011 |
20110262194 | IMAGE FORMING APPARATUS AND FUSER APPARATUS - According to an embodiment of the invention, a heat uniforming member, which has an outer diameter smaller than an inner diameter of a hollow member and in which thermal deformation generated by thermal expansion remains, is set in the inside of the hollow member having a center axis, support members are set to both ends of the hollow member to enable supporting of ends of the heat uniforming member, and an endless body having a uniform thermal distribution is formed by heating the hollow member, the heat uniforming member and the support member at a specified temperature for a specific time and causing the heat uniforming member to adhere closely to an inner wall of the hollow member. | 10-27-2011 |
20120082484 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - According to one embodiment, there are provided a developing section storing a color erasable developing agent that includes capsule colorant particles with a core in which a color developable compound, a color developing agent, and a color erasing agent are contained, and a developing section storing a binder resin-containing transparent developing agent. A transparent developing agent image is transferred to a region capable of covering a color erasable developing agent image and the resulting image is fixed. | 04-05-2012 |
20130164008 | IMAGE FORMING METHOD - According to one embodiment, a developing device in which a decolorizable developing agent containing encapsulated colorant microparticles each including a core containing a color developable compound, a color developer, and a decolorizing agent is accommodated and a developing device in which a transparent developing agent containing a binder resin is accommodated are provided, respectively, and an image is formed by transferring a transparent developing agent image onto a region capable of covering a decolorizable developing agent image, followed by fusing the image. Further, in the second image formation and thereafter, the using amount of the transparent developing agent is decreased as compared with that in the first image formation. | 06-27-2013 |
20140240724 | IMAGE FORMING APPARATUS - In accordance with one embodiment, an image forming apparatus comprises an image forming section configured to form a toner image on a printing recording medium, a fixing section configured to heat the printing recording medium printed with the toner image at a fixing temperature, a temperature control section configured to control the fixing section to a temperature above a color erasing temperature, a conveyance section configured to convey the printing recording medium or a color erasing recording medium to the fixing section, and a speed control section configured to control, according to a setting temperature of the fixing section, a speed ratio of a traveling speed of the fixing section to a conveyance speed of the conveyance section. | 08-28-2014 |