| Patent application number | Description | Published |
|---|
| 20080199229 | Transfer-fixing device, image forming apparatus, and transfer-fixing method - A transfer-fixing device includes a transfer-fixing member, a pressing member, a heating device, and a temperature equalizer. The transfer-fixing member carries the toner image. The pressing member presses against the transfer-fixing member to form a nip portion to which the recording medium is conveyed. The heating device heats the transfer-fixing surface of the recording medium conveyed toward the nip portion. The temperature equalizer equalizes a temperature distribution of a surface of the transfer-fixing member in a width direction of the transfer-fixing member after the surface of the transfer-fixing member passes through the nip portion. | 08-21-2008 |
| 20100232844 | Transfer fixing device and image forming apparatus incorporating same - A transfer fixing device includes a transfer fixing member, a pressure member, and a primary heater. The transfer fixing member defines a moving surface on which a toner image travels. The pressure member is pressed against the transfer fixing member to define a transfer fixing nip where the toner image traveling along the moving surface meets a surface of a recording medium traveling along the media conveyance path. The primary heater is located upstream of the transfer fixing nip along the media conveyance path to heat the surface of the recording medium before entering the transfer fixing nip. The heated surface of the recording medium fuses toner for transfer and fixing into place at the transfer fixing nip. The pressure member is at least partially electrically biased to generate an electrostatic field to promote transfer of toner at the transfer fixing nip. | 09-16-2010 |
| 20100239292 | Transfer-fixing device and image forming apparatus incorporating same - In a transfer-fixing device for transferring and fixing a toner image on a transfer-fixing side of a recording medium, a transfer-fixing member carries the toner image. A pressing member presses against the transfer-fixing member to form a nip between the transfer-fixing member and the pressing member through which the recording medium passes. A heat transmission member is provided upstream from the nip in a recording medium conveyance direction to heat the transfer-fixing side of the recording medium while guiding the recording medium to the nip. A heating member is connected to the heat transmission member to heat the heat transmission member. A biasing member biases the recording medium guided by the heat transmission member against the heat transmission member. | 09-23-2010 |
| Patent application number | Description | Published |
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| 20080219717 | TRANSFER-FIXING DEVICE, IMAGE FORMING APPARATUS, AND TRANSFER-FIXING METHOD - The transfer-fixing device includes an image carrier, a pressing member, a heater, and an electrical field generator. The image carrier carries a toner image. The pressing member presses against the image carrier to form a transfer-fixing nip between the pressing member and the image carrier. The heater heats the toner image carried by the image carrier so that a temperature of the toner image is not higher than Tm +10 degrees centigrade when a toner softening point is Tm degrees centigrade. The electrical field generator forms a transfer electrical field at the transfer-fixing nip. | 09-11-2008 |
| 20090003898 | CLEANING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS - A cleaning device including a cleaning member that moves in a predetermined direction and is in contact with a cleaning target that moves in a predetermined direction and which is directly or indirectly heated by a heater, to remove toner particles on a surface of the cleaning target. A contact surface of the cleaning member with the cleaning target includes a plurality of regions of different toner-releasing ability. | 01-01-2009 |
| 20090016786 | TRANSFER FIXING MEMBER, TRANSFER FIXING DEVICE AND IMAGE FORMING APPARATUS - A transfer fixing member containing a base, and an outermost surface layer composed of an elastic material in which a conductive material is dispersed, wherein when a pressure applied to a surface of the transfer fixing member by making a toner image bearing member in contact with the transfer fixing member upon transferring of a toner image on the toner image bearing member onto the transfer fixing member is 0.2 kg/cm | 01-15-2009 |
| 20090116880 | Image transfer fixation apparatus and image formation apparatus - A transfer fixation apparatus includes: a fixing member that carries the toner image; a pressurizing member that becomes in contact with the fixing member with pressure to form a nip through which the recording target medium is transported; and a plurality of heating members that are provided at relatively upstream positions when viewed from the relatively downstream nip and apply heat to the surface of the recording target medium that is transported toward the nip, wherein the number of heating members that apply heat to the surface of the recording target medium is changed depending on whether the transfer of the toner image is performed only on the front side of the recording target medium or the transfer of the toner image is performed also on the reverse side of the recording target medium after the transfer of the toner image on the front side of the recording target medium. | 05-07-2009 |
| 20100014897 | Transfer and fixing device and image forming apparatus - A transfer and fixing device as means for heating a recording medium prior to transfer and fixing, without risk of fire, superior in energy efficiency, and able to stably heat irrespective of the thickness of the recording medium; and an imaging forming apparatus comprising such a transfer and fixing device comprising: a transfer and fixing member by which an image is transferred; a pressurizing member that forms a nip by pressure contact with the transfer and fixing member and pressurizes and fixes the image on the recording medium that passes through the aforementioned nip; a radiant heat source that is arranged on the upstream side of the nip in the direction of transport of the recording medium; and a thermoconductive member that is heated by the radiant heat source and heats the recording medium when in contact, wherein a radiant heat region is provided, between the nip and the thermoconductive member, where the recording medium is heated by radiant heat from the radiant heat source. | 01-21-2010 |
| 20100014903 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member to bear an electrostatic latent image on the surface thereof, a transfer-fixing member disposed adjacent to the image baring member, including a transfer surface onto which the toner image is transferred from the image bearing member, a first pressure member to meet and press against the transfer-fixing member to form a nip therebetween, a heating member to heat a recording medium, provided upstream of the nip in a direction of transport of the recording medium, and a transport guide member to change a contact area of the recording medium and the heating member in accordance with a thickness or a resilience of the recording medium. When the recording medium passes the nip, the toner image is pressed and fixed on the recording medium. | 01-21-2010 |
