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| Number | Title | Issue Date |
| 8175494 | Intermediate transfer device, transfer device and image forming apparatus for wrinkle suppression An intermediate transfer device includes an endless-belt-form intermediate transfer material; a first moving member that is movable between a first position-1 and a second position-1, which is farther from the intermediate transfer material than the fi... | 05/08/2012 |
| 8165498 | Image forming device An image forming device is disclosed that is able to enlarge a gap of a nipping portion with a simple and inexpensive structure, and able to reduce impact when a front end of a recording sheet runs into or a back end of the recording sheet passes through the nipping... | 04/24/2012 |
| 8165499 | Image forming apparatus having a first coupling and a second coupling A unit detachably mountable to an apparatus main assembly is provided with a coupling for receiving a rotational driving force from the apparatus main assembly. Also the apparatus main assembly is provided with a coupling to be engaged with the coupling of the unit.... | 04/24/2012 |
| 8155559 | Image-forming device An image-forming device includes a body frame having a first contacting part and a second contacting part; and a belt unit detachably mounted in the body frame. The belt unit includes a belt unit main frame, a first roller, a second roller, a belt, a belt unit side ... | 04/10/2012 |
| 8135307 | Transfer belt device, method of assembling the same, and image forming apparatus Rollers including a tension roller are arranged in parallel. A pair of supporting members supports both ends of the rollers. A transfer belt is supported by the rollers. A biasing member applies a tension to the transfer belt by biasing the tension roller in a prede... | 03/13/2012 |
| 8135308 | Detachable transfer unit used for image forming apparatus and operation method of the transfer unit In an image transferring apparatus of the invention, a transfer roller which comes in press contact with a sheet sent through a sheet conveyance path and transfers a toner image formed by an image forming section onto the sheet is constructed to be capable of being ... | 03/13/2012 |
| 8126361 | Image forming apparatus with combined belt unit and sheet guide member A laser printer has an opening formed at its front surface side and a front cover for opening and closing the opening. A belt unit is attachably and detachably provided with respect to a body casing via the opening in a state where the front cover is opened. A guide... | 02/28/2012 |
| 8126363 | Belt feed apparatus and image forming apparatus using the same A belt feed apparatus, includes: an endless belt member; a belt back surface member including a close portion disposed close to the endless belt member to such a degree that, when the endless belt member stands stationary, the close portion is prevented from touchin... | 02/28/2012 |
| 8126362 | System and method for measuring media thickness with a transfer subsystem in a printer A printer and method have been developed that enable a controller in a printer to compute a thickness of an image substrate. The printer includes an intermediate imaging member, a transfer roller located proximate to the intermediate imaging member, a displaceable l... | 02/28/2012 |
| 8116663 | Image forming apparatus with a secondary-transfer-roller releasing mechanism An image forming apparatus includes a coupling arm that moves, when a release handle is pulled up, in association with the movement of the release handle and separates a secondary transfer roller from a secondary-transfer-roller positioning member. The image forming... | 02/14/2012 |
| 8103188 | Image forming apparatus An image forming apparatus includes a secondary transfer roller that is supported by a secondary-transfer-unit supporting unit and transfers a toner image onto a recording medium, a lubricant applying brush that comes into contact with the secondary transfer roller ... | 01/24/2012 |
| 8103190 | Belt device and image-forming apparatus A belt device for an image forming apparatus includes an endless belt member supported at roller members, side frames disposed along sides of the belt member being respectively slidably supported at slide rails disposed at a body of the image forming apparatus, a re... | 01/24/2012 |
| 8103189 | Image forming apparatus having removable belt A belt unit having a belt stretched by a plurality of rollers is removably mounted in an image forming apparatus. A pressure removing member moves a tension roller for applying tension to the belt from a first position to apply the tension to the belt to a second po... | 01/24/2012 |
| 8095040 | Intermediate transfer-type image forming apparatus with separation/contact mechanism In an embodiment of the present invention, an image forming apparatus includes a transfer belt that primarily transfers a toner image formed on a photosensitive drum; a secondary transfer unit including a transfer mechanism portion that secondarily transfers the pri... | 01/10/2012 |
| 8095039 | Image forming apparatus with an opening and closing unit An image forming apparatus includes: a main body; an opening and closing unit disposed so as to be openable and closable for the main body; a fixing unit fixing the opening and closing unit to the main body; a structure including a component for realizing an image f... | 01/10/2012 |
| 8081902 | Image-forming device with detachable belt unit An image-forming device includes a body frame, a belt unit, and a process cartridge. The belt unit includes a belt unit main frame having a first main end portion and a second main end portion in a first direction, a first roller disposed at the first main end porti... | 12/20/2011 |
| 8064797 | Image forming apparatus having releasing mechanism for removable toner-image conveyance belt An image forming apparatus includes an image bearing member, a rotatable belt member configured to contact the image bearing member, a belt unit configured to support the belt member and removably mounted on the image forming apparatus, an operation unit disposed on... | 11/22/2011 |
| 8045887 | Image forming apparatus An intermediate transfer unit includes a stand member that is integral with an intermediate-transfer-unit body of the intermediate transfer unit. The stand member stretches below the intermediate-transfer-unit body from a trailing edge to a leading edge of the inter... | 10/25/2011 |
| 8027616 | Belt unit and image forming apparatus A belt unit includes: a pair of roller members spaced from and opposing each other in a first direction, each of the roller members having an axis extending in a second direction; an endless belt extending around the roller members; a plurality of transfer members a... | 09/27/2011 |
| 8014701 | Contacting and separating mechanism and image forming apparatus A contacting and separating mechanism which causes a first member to contact a second member and separates the first member contacting the second member from the second member is disclosed. The contacting and separating mechanism includes a pressure applying member ... | 09/06/2011 |
| 8014700 | Image forming apparatus An image forming apparatus which includes a plurality of image bearing members, a plurality of primary transferring devices, an intermediary transfer unit, a secondary transfer portion, a feeding path, a detecting member, an adjusting device, an openable member, a g... | 09/06/2011 |
| 8000632 | Image forming apparatus and image forming method An image forming apparatus includes an image transfer unit that transfers a reversed image onto an image bearing member as a toner image, a secondary transfer roller that transfers the toner image onto a recording medium, a contact and separation unit that brings th... | 08/16/2011 |
| 7986904 | Image forming apparatus In an image forming apparatus, a plurality of photoconductors arranged in the apparatus is supported by a support frame which is allowed to be pulled out from a body of the apparatus; and an endless intermediate transfer belt looped around a first roller and a secon... | 07/26/2011 |
| 7986903 | Transfer device and image forming apparatus having the transfer device An image forming apparatus capable of preventing meandering of a transfer belt. The image forming apparatus includes a main body, including an image forming unit; and a transfer device to transfer an image formed by the image forming unit to a printing medium. The t... | 07/26/2011 |
| 7979000 | Transfer unit and image forming apparatus A turnable transfer unit, including a transfer member forming a transfer nip while contacting an image bearer installed in an image forming apparatus; and a pressurizer pressurizing the transfer member to the image bearer, wherein the turnable transfer unit further ... | 07/12/2011 |
| 7974552 | Device and method for forming a nip in an image forming apparatus An image forming apparatus includes an image carrier which moves while carrying an image and a transfer roller including a roller base material which faces the image carrier and rotates. A concave portion is positioned on a peripheral surface of the roller base mate... | 07/05/2011 |
| 7965959 | Transfer apparatus and image forming device A transfer apparatus includes a transfer belt that conveys a toner image which has been transferred to an outer periphery face thereof; a transfer member that, at a contact portion, causes the toner image to be transferred from the outer periphery face of the transf... | 06/21/2011 |
| 7957673 | Toner transfer systems with an adjustable transfer belt for use in an image forming device The present application is directed to toner transfer systems with an adjustable transfer belt. The transfer belt transfers toner images from a first location to a second location. Two or more support rolls position and drive the transfer belt. A tensioning device i... | 06/07/2011 |
| 7957672 | Image forming apparatus with a belt unit An image formation apparatus is provided that prevents a belt from becoming displaced or detached from a belt unit. When a belt unit is detached from a main body casing, a tension roller is fixed in an outwardly protruding position by a fixing member. Thereby, the c... | 06/07/2011 |
| 7945189 | Image forming apparatus and image forming method An image forming apparatus and an image forming method are provided that realize both the use of a decolorizing toner and a non-decolorizing toner and miniaturization of the apparatus. An image forming apparatus employing an intermediate transfer system includes: a ... | 05/17/2011 |
| 7941074 | Image conveyance unit, intermediate transfer unit, electrostatic transfer unit, and image forming apparatus A belt cover is configured to approach an intermediate transfer belt when an intermediate transfer portion retracts from a photosensitive drum. This allows the space required for the retraction of the belt cover to be made smaller when the intermediate transfer port... | 05/10/2011 |
| 7920808 | Belt device and image-forming apparatus A belt device for use in an image forming apparatus includes two side frames supported by two slide rails disposed at the body of the image forming apparatus on the outside of the outer periphery of the belt member, a rear frame constructed between two sub-frames an... | 04/05/2011 |
| 7917060 | Image forming apparatus having a sensor blocking device An image forming apparatus includes an image forming unit configured to form a toner image on an image bearing member, an endless belt configured to transfer and carry the toner image thereon, a transfer unit configured to transfer the toner image carried by the end... | 03/29/2011 |
| 7885576 | Belt installation tool A tool for installation of intermediate belts by a customer includes a lightweight frame structure that is collapsible for handling and ease of belt loading onto the tool itself. The frame structure includes linkage such that when a handle connected to the frame str... | 02/08/2011 |
| 7881634 | Image forming apparatus in which transfer member is movable toward and apart from image bearing member In a constitution for detecting a position of a transfer member on the basis of a detection result of a current passing between the transfer member and an image bearing member, the positional detection is performed after a contacting and separating operation of the ... | 02/01/2011 |
| 7881635 | Image forming apparatus including a detachable convey-guiding member detachably attached to a fixed convey-guiding member fixed to a device main body An intermediate transfer unit can be detached from a device main body through an opening that is covered by an openable and closable front cover. A sheet path is provided between the intermediate transfer unit and the front cover. A portion of a convey-guiding unit ... | 02/01/2011 |
| 7865113 | Image forming apparatus with a removable transferring unit An image forming apparatus is described. The image forming apparatus may include a casing, developing agent carriers, an image carrier, and a transferring unit anteroposteriorly detachably mountable to the casing on a front side of the casing. The transferring unit ... | 01/04/2011 |
| 7856194 | Intermediate transfer unit-mounting and dismounting mechanism and intermediate transfer unit-mounting and dismounting method An intermediate transfer unit mounting and dismounting mechanism for an image forming apparatus including a transfer belt unit that is provided as a separate structure from the apparatus body and can be mounted to and dismounted from the apparatus body, includes: a ... | 12/21/2010 |
| 7848677 | Image forming apparatus capable of preventing scattering of toner The image forming apparatus according to the present invention has: a transfer unit including an intermediate transfer medium that circularly moves; plural image forming sections provided in parallel with each other from an upstream side to a downstream side along a... | 12/07/2010 |
| 7844199 | Image forming apparatus having detachable intermediate transfer body An image forming apparatus includes: an apparatus body including: an image forming unit that forms toner images having the colors being different from each other; a intermediate transfer body that has a belt-shape, and that is arranged in an upper portion of the ima... | 11/30/2010 |
