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| Number | Title | Issue Date |
| 8135306 | Image forming apparatus having detachable process units An image forming apparatus includes process units arranged in a predetermined direction to form a process-unit row, each having a photosensitive body and a developer container; a casing accommodating the process units and having a cover opening and closing an openin... | 03/13/2012 |
| 8107855 | Image forming device having detachable developing device unit An image forming device includes a main casing, a photosensitive drum unit and a developing device unit. The photosensitive drum unit includes a plurality of photosensitive drums juxtaposed in a first direction orthogonal to an axis of each photosensitive drum. The ... | 01/31/2012 |
| 8099019 | Developing-transferring module and image forming apparatus having the same A developing-transferring module includes a sub frame which is detachably mounted to a main frame, a plurality of photosensitive units which are disposed inside the sub frame with a predetermined interval and includes a photosensitive body to which a developer is at... | 01/17/2012 |
| 8050593 | Image forming apparatus including a mechanism for reliably mounting a process unit An image forming apparatus capable of reliably positioning a process unit in a main image forming apparatus body, without impairing ease of mounting/dismounting of the process unit achieved by a simple structure. The image forming apparatus including a convex sectio... | 11/01/2011 |
| 8023860 | Developing-transferring module and image forming apparatus having the same A developing-transferring module includes a sub frame which is detachably mounted to a main frame, a plurality of photosensitive units which are disposed inside the sub frame with a predetermined interval and includes a photosensitive body to which a developer is at... | 09/20/2011 |
| 8014699 | Image forming apparatus having detachable process units An image forming apparatus includes process units arranged in a predetermined direction to form a process-unit row, each having a photosensitive body and a developer container; a casing accommodating the process units and having a cover opening and closing an openin... | 09/06/2011 |
| 7986901 | Image forming apparatus An image forming apparatus having removable/replaceable process cartridges is provided. One of the removable/replaceable process cartridges is removed/replaced from a panel which is different than a panel from which the other removable/replaceable process cartridges... | 07/26/2011 |
| 7970314 | Image forming apparatus with translation cam member An image forming apparatus includes a detaching and pressing mechanism for releasing developing rollers of developer cartridges mounted in a drum unit from photosensitive drums and pressing the developing rollers on the photosensitive drums. The detaching and pressi... | 06/28/2011 |
| 7920807 | Image forming apparatus having a translation member for separating a photosensitive member from a developing member An image forming apparatus includes a main body; a tandem type photosensitive unit, retaining photosensitive drums, mounted in the body and movable along the arrangement direction of the drums; and a developer cartridge provided for each drum, retaining a developing... | 04/05/2011 |
| 7761032 | Drum unit with photosensitive drums for attachment with an image forming apparatus main body An image forming apparatus of a tandem system includes a main body and a drum unit attachable to and detachable from the main body. The drum unit includes photosensitive drums, a housing for rotatably supporting the photosensitive drums, and for each photosensitive ... | 07/20/2010 |
| 7680432 | Image forming apparatus An image forming apparatus having removable/replaceable process cartridges is provided. One of the removable/replaceable process cartridges may be removed/replaced from a panel which is different than a panel from which the other removable/replaceable process cartri... | 03/16/2010 |
| 7676174 | Tandem photosensitive-member unit having grip part An image-forming device includes a main body and a tandem photosensitive-member unit. The tandem photosensitive-member unit includes a unit frame, a plurality of photosensitive members, a front-side grip part, and a rear-side grip. The unit frame is configured to be... | 03/09/2010 |
| 7542702 | Image forming apparatus having a simple cassette of image bearing photoconductors An image forming apparatus includes a plurality of image carrying members and an image carrier. Each of the plurality of image carrying members is configured to form and carry a toner image. The image carrier cassette is configured to be detachably installed to the ... | 06/02/2009 |
| 7444100 | Image forming apparatus with a removable holder for holding developing devices An image forming apparatus is provided which includes a housing, a series of photoconductors on which an electrostatic latent image is formed, and developing devices, which each include a developing agent carrier for holding a developing agent. Also, the apparatus m... | 10/28/2008 |
| 7428394 | Electronic color photography apparatus An electronic color photography apparatus includes a photosensitive body and a plurality of detachable developing devices. A power for moving the developing devices close to the photosensitive body is created by a retracting force of a slanted teeth gear which is dr... | 09/23/2008 |
| 7426355 | Tandem photosensitive-member unit having grip part An image-forming device includes a main body and a tandem photosensitive-member unit. The tandem photosensitive-member unit includes a unit frame, a plurality of photosensitive members, a front-side grip part, and a rear-side grip. The unit frame is configured to be... | 09/16/2008 |
| 7382988 | Image forming apparatus A process cartridge of the present invention is removably mounted to the body of an image forming apparatus and includes an image carrier and a developing device configured to develop a latent image formed on the image carrier. A cartridge body, forming major part o... | 06/03/2008 |
| 7362987 | Image forming apparatus An image forming apparatus having removable/replaceable process cartridges is provided. One of the removable/replaceable process cartridges may be removed/replaced from a panel which is different than a panel from which the other removable/replaceable process cartri... | 04/22/2008 |
| 7340204 | Color image forming apparatus and process cartridge therefor A color image forming apparatus including a first-color developing unit configured to form a toner image on the photoconductive belt; and a second-color developing unit and successive developing units, at least the second-color and successive developing units each i... | 03/04/2008 |
| 7333751 | Electrophotographic process unit and image forming apparatus According to the present invention, when inserting and removing EPUs from an image forming unit, a support leg of a casing can swing, is inclined, and avoids easily a structural body on a path. Further, when putting the EPUs outside the main body of the image formin... | 02/19/2008 |
| 7330679 | Image forming apparatus in which a user may separate a development cartridge from the image forming apparatus An image forming apparatus, including a main body frame, a cover which is pivotally coupled to the main body frame, to occupy and move between a first position at which the cover is closed and a second position at which the cover is open, and a development cartridge... | 02/12/2008 |
| 7302201 | Voltage switch and electrophotographic color image forming apparatus using the same A voltage switch for connecting a power supply with a plurality of development units in sequence, and an electrophotographic color image forming apparatus using the voltage switch. In the voltage switch, a first terminal is arranged on a circuit board and is connect... | 11/27/2007 |
| 7292817 | Image forming apparatus, process cartridge, and waste toner recovery device An image forming apparatus includes a frame body, a frame cover supported by the frame body so as to be capable of opening and closing, an image forming unit that forms a toner image on an image carrier, a cleaning unit that removes and collects residual toner from ... | 11/06/2007 |
| 7263310 | Housing assembly of OPC unit A housing assembly of an OPC unit to protect an OPC drum in an image forming apparatus includes a main housing enclosing at least a half of a large-diameter OPC drum and provided with a main-opening selectively contacting a plurality of developing units and a plural... | 08/28/2007 |
| 7245844 | Printing system A printing system includes first and second marking engines. First and second fusers are associated with the marking engines, respectively. The printing system has a first mode of operation in which print media is fused by both fusers and a second mode of operation ... | 07/17/2007 |
| 7245850 | Photosensitive member cartridge The invention provides a photosensitive member cartridge, that has, for example, a case including a bottom wall, an upper wall, and side walls. A photosensitive drum and a transfer roller are rotatably disposed in a space surrounded by the bottom wall, the upper wal... | 07/17/2007 |
| 7242888 | Image forming apparatus with processing unit that can be removed from the image forming apparatus without removing exposing devices A tandem color laser printer, in which processing units can be smoothly attached to and detached from its casing, is provided while an adequate accuracy of exposure to photosensitive drums is maintained. In the color laser printer, scanning units are fixed to the pr... | 07/10/2007 |
| 7231167 | Photosensitive member cartridge The invention provides a photosensitive member cartridge, that has, for example, a case including a bottom wall, an upper wall, and side walls. A photosensitive drum and a transfer roller are rotatably disposed in a space surrounded by the bottom wall, the upper wal... | 06/12/2007 |
| 7224923 | Photosensitive member cartridge The invention provides a photosensitive member cartridge, that has, for example, a case including a bottom wall, an upper wall, and side walls. A photosensitive drum and a transfer roller are rotatably disposed in a space surrounded by the bottom wall, the upper wal... | 05/29/2007 |
| 7218878 | Photosensitive member cartridge The invention provides a photosensitive member cartridge, that has, for example, a case including a bottom wall, an upper wall, and side walls. A photosensitive drum and a transfer roller are rotatably disposed in a space surrounded by the bottom wall, the upper wal... | 05/15/2007 |
| 7206523 | Color image forming apparatus and method using detachable process units A cleanerless cartridge in which a photoconductor body and a charger are integrated, and a cleaner-equipped cartridge in which a photoconductor body, a charger and a cleaner are integrated are prepared. An image forming apparatus body is configured such that the car... | 04/17/2007 |
| 7203447 | Image forming apparatus with first and second openable portions The present invention relates to an image forming apparatus comprising an image carrier for carrying an image, an intermediate transfer body to which the image on the image carrier is transferred, a transfer material conveying unit for conveying a transfer material ... | 04/10/2007 |
| 7197262 | Attachable/detachable transfer device, an attachable/detachable cartridge and an image forming apparatus An attachable/detachable transfer device, an attachable/detachable cartridge and an image forming apparatus that can employ the attachable/detachable transfer device and/or the attachable/detachable cartridge are provided. The transfer device and the cartridge are a... | 03/27/2007 |
| 7187886 | Image forming apparatus having a securing member to secure an image forming unit to a housing body The present invention relates to an image forming apparatus to which a process cartridge can be detachably attached, comprising: a housing body to which the process cartridge is attached; an opening and closing portion for detachably attaching the process cartridge;... | 03/06/2007 |
| 7177556 | Image formation device and recording agent cartridge attached thereto Toner cartridges 32C, 32M, 32Y, and 32K have storage elements 33C, 33M, 33Y, and 33K mounted thereon to transmit information carried on electromagnetic wave in a predetermined frequency band. An information rec... | 02/13/2007 |
| 7155148 | Image forming apparatus An image forming apparatus for forming an image with a developing agent, includes: a collecting-developing-agent occurring part in which the collecting developing agent to be collected in the developing agent occurs; a collection container for accommodating the coll... | 12/26/2006 |
| 7146121 | Process unit, photoconductive unit, developing unit, and image forming apparatus An image forming apparatus includes: an image carrier that carries an electrostatic latent image thereon; an electrostatic latent image forming unit that forms an electrostatic latent image on a surface of the image carrier; a developing unit having a toner hopper t... | 12/05/2006 |
| 7139508 | Image forming cartridge and image forming apparatus An image forming apparatus including first and second image forming cartridges. Both of the first and second image forming cartridges has at least one handle. The handle of the first image forming cartridge is formed at a different position in line with the handle o... | 11/21/2006 |
| 7139509 | Image forming apparatus including image transfer belt conveying a recording medium upward An image forming apparatus includes a plurality of cartridges disposed at intervals along an image transfer belt. A plurality of image writing devices is configured to write images. A partition member separates the plurality of cartridges from the plurality of image... | 11/21/2006 |
| 7136615 | Heat fixing unit with improved belt handling A fixing unit that is provided in an image forming device and fixes a toner image transferred to paper is constructed of two belts, belt guides each of which guides the inner periphery of each of the belts, a heating member arranged in one of the belts or heating me... | 11/14/2006 |
