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| Number | Title | Issue Date |
| 8180258 | Image forming apparatus with reduction of operation noise A replacing mouth 5 for replacing each of toner cartridges 40 is provided at such a position that when any of developer units 32 stops at a developing position 38, the toner cartridge 40 adjacent to the pertinent developer unit ... | 05/15/2012 |
| 8170450 | Color electrophotographic image forming apparatus that utilizes a rotatable rotary support member to support a plurality of developing devices A color electrophotographic image forming apparatus to form an image on a recording medium may include a photosensitive member, a rotary support member, a first member, a second member, and a controlling unit. The photosensitive member forms an electrostatic latent ... | 05/01/2012 |
| 8155564 | Image forming apparatus In a rotary-type image forming apparatus, rotation of a rotary is temporarily stopped at a position where a coupling member and a drive transmission member are engageable with each other, and a developing roller is set in a rotating state. Subsequently, the rotary i... | 04/10/2012 |
| 8150296 | Color electrophotographic image forming apparatus with manually-operated unit In an image forming apparatus including a rotary member (15) to which a plurality of developing cartridges (B, Y, M, C) (16) are detachably mountable, a user can rotate the rotary member with an easy operation to access the plurality of developing cart... | 04/03/2012 |
| 8095045 | Rotary developing unit and toner supply container A rotary developing unit includes: a first developing device; a second developing device; a toner supply container that is inserted between the first developing device and the second developing device to be attached to the first developing device; a first guide form... | 01/10/2012 |
| 8081906 | Image forming apparatus wherein, when a rotary member is located at a reference position, a color developing device is located in a region extending from a position of a transparent developing device toward a downstream side of a rotation direction of the rotary member to a lowermost point in the gravity direction of the rotary member An image forming apparatus includes color developing units for development with color developing agents, a transparence developing unit for development with a transparent developing agent, a rotary member which holds and rotationally moves the color and transparence... | 12/20/2011 |
| 8045891 | Rotary developing apparatus rotatably accommodating a plurality of developer units, developer unit and image forming apparatus including rotary developing apparatus In a rotary type image developing apparatus that has a rotary rack accommodating a plurality of developer units and drives the rotary rack to rotate in a predetermined rotational direction so as to bring a targeted one of the developer units to a developing position... | 10/25/2011 |
| 8027618 | Color electrophotographic image forming apparatus including a rotary drive transmission mechanism A color electrophotographic image forming apparatus includes a rotatable supporting member to support a number V of developing devices. A drive transmission mechanism is provided in which each time one of the number V of engaging portions on a rotary member is disen... | 09/27/2011 |
| 7991329 | Developer apparatus, image forming apparatus and developing method A developer apparatus, includes: a container which houses toner; a toner carrier roller which is provided, on a surface thereof, with a plurality of convex sections which are regularly arranged and a concave section which surrounds the convex sections, is shaped app... | 08/02/2011 |
| 7933538 | Color electrophotographic image forming apparatus including a rotary drive transmission mechanism A color electrophotographic image forming apparatus includes a rotary to support and move developing devices to a development position without an independent driving motor for rotating the rotary. A number V of developing devices supported by the rotary are sequenti... | 04/26/2011 |
| 7929884 | Image forming apparatus, developing unit, and computer system An image forming apparatus, for example, that is capable of accurately writing information into a developing unit or the like having an element is achieved. An image forming apparatus comprises: an attach/detach section to and from which a developing unit having an ... | 04/19/2011 |
| 7912407 | Developing unit, developing device and image forming apparatus for peeling off magnetic developer A developing unit includes: a developer carrying member that visualizes an electrostatic latent image held on an image carrying member using magnetic developer; a peeling member that peels off the magnetic developer held on the developer carrying member by a magneti... | 03/22/2011 |
| 7899365 | Image forming apparatus for forming a color image that prohibits image staining and contamination of toners in different colors with scattered toner An image forming apparatus for forming a color image has developing devices with different color toners. Each developing device has a toner carrier and a layer thickness-controller facing the carrier. Circularity of toner in a particular color is smaller than that o... | 03/01/2011 |
| 7899366 | Image forming apparatus with driving and driven gears An image forming apparatus includes an image bearing member on which an electrostatic image is formed by imagewise exposure; a rotatable member; a developing device carried on said rotatable member and movable, by rotation of said rotatable member, to a developing p... | 03/01/2011 |
| 7865116 | Rotary type developing device A color printer 1 has a rotary type developing device 30 which rotated by an input gear 46 that receives power from a motor, and a plurality of developing units 13 supported on a frame 28. The plurality of developing units 13 | 01/04/2011 |
| 7853179 | Method and apparatus for regulating toner amount in developing chamber of image forming apparatus In an image forming apparatus provided with a rotary type image developing apparatus, during monochrome print job processing, it is judged whether the amount of toner remaining in the developing chamber of the black developer unit is equal to or less than a predeter... | 12/14/2010 |
| 7848681 | Method of rotating revolver unit using a plurality of motors According to an embodiment of the invention, a revolver unit is rotationally driven by using three stepping motors. The weight of developing cartridges loaded on the revolver unit is identified on the basis of the quantity of remaining toner in toner cartridges. At ... | 12/07/2010 |
| RE41934 | Image forming system An image forming system is disclosed which can prevent toner stain adhered onto an image bearing member at the time of switching from one developing unit to another from adhering to an image area on an intermediate transfer member and which can thereby prevent the d... | 11/16/2010 |
| 7702260 | Development cartridge, development device, and image formation apparatus There is provided a development cartridge capable of switching development colors in a plurality of development cartridges without using development rack. A development cartridge of the present invention has a part of a drive member for switching development colors.... | 04/20/2010 |
| 7680440 | Rotary developing device A rotary developing device 30 is provided in an image forming device that is rotated by an input gear 46. The rotary developing device 30 has a plurality of developing units 13, a frame 28, and a rotation stop mechanism 50. ... | 03/16/2010 |
| 7676178 | Toner cartridge having grip, exchangeably inserted into revolver and replenishing toner into developing device According to a toner cartridge of this invention, a region (R3) extending along the outer circumferential direction of a toner cartridge (50) is not tapered, and a region (R1) on the inner wall of a developing device (10) which correspond... | 03/09/2010 |
| 7672617 | Image apparatus with toner replenishing An imaging apparatus has an image carrier, an exposure unit to irradiate the image carrier; a developing part; a rotator on which a plurality of such developing parts is provided; a color toner replenishing part which moves from a retracted position where light emit... | 03/02/2010 |
| 7668486 | Rotation speed control device and image forming device The image forming unit 100 includes a photosensitive drum 11, a rotary developing device 30, and a rotation speed control device 70. Electrostatic latent images are formed on the surface of the photosensitive drum 11. The rotary de... | 02/23/2010 |
| 7664435 | Development apparatus There is provided a development apparatus including a plurality of replenishment developer containers which accommodates a replenishment developer containing a toner to be replenished to a plurality of development devices, a plurality of replenishment developer conv... | 02/16/2010 |
| 7664436 | Color electrophotographic image forming apparatus A color electrophotographic image forming apparatus which simplifies a configuration in which a rotary is rotated to change over respective developing devices to a development position to reduce the costs and save the space, and which simplifies the changeover opera... | 02/16/2010 |
| 7630670 | Developing apparatus and image forming apparatus In a developing apparatus provided with a developer container containing a developer, a rotary member holding the developer container and rotatively moving it relative to a developing position, an opening portion provided in the developer container and through which... | 12/08/2009 |
| 7580656 | Image forming apparatus featuring reduced shock attributable to a speed difference between a driving gear and a driven gear of a developing device An image forming apparatus includes an image bearing member on which an electrostatic image is formed by imagewise exposure; a rotatable member; a developing device carried on said rotatable member and movable, by rotation of said rotatable member, to a developing p... | 08/25/2009 |
| 7567773 | Developer vessel A developer vessel having: a developing agent, a second developing agent holding chamber that holds the developing agent supplied to the developing agent supporter; a first developing agent holding chamber being adjacent to the second developing agent holding chambe... | 07/28/2009 |
| 7536136 | Image forming apparatus and image forming method An image forming apparatus includes a rotatable developing device incorporating first developer units, a second developer unit disposed outside the rotatable developing device, a photoconductor on which a toner image can be formed by contact of each of the first and... | 05/19/2009 |
| 7496319 | Image forming apparatus, rotation type development unit, and toner replenishment container An image forming apparatus includes: a casing; a developer having a plurality of developers and a rotational body that is rotatably supported on the casing, the plurality of developers being able to be mounted with a toner replenishment container filled with toner, ... | 02/24/2009 |
| 7469117 | Image forming apparatus, developing unit, and computer system An image forming apparatus and a computer system having an efficient communication system are achieved. The image forming apparatus etc. is provided with an antenna that is capable of wirelessly communicating both with the developing-unit element of the developing u... | 12/23/2008 |
| 7460818 | Image forming apparatus and image forming method In a color printing mode of an image forming apparatus, two toner images in respective colors are formed and superimposed on an intermediate transfer belt. A gap D11 between toner images of the same color is narrowed while a gap D12 between toner image... | 12/02/2008 |
| 7457567 | Image forming apparatus that prevents displacement of rotary member An image carrier is adapted such that an electrostatic latent image is formed thereon. A rotary member has a plurality of loading sections each of which is adapted to accommodate a developing device which is operable to develop the electrostatic latent image. A moto... | 11/25/2008 |
| 7444089 | Image forming apparatus, toner cartridge and method to detect toner level An image forming apparatus that forms an image according to an electrophotographic system includes plural developing units provided in a cylinder, which freely rotates a fixed angle at a time around a rotation shaft, to rotate together with the cylinder. Toner level... | 10/28/2008 |
| 7444102 | Image forming apparatus and image forming system incorporating the same A rotary member has a plurality of loading sections each of which is adapted to accommodate a developing device operable to develop an electrostatic latent image formed on an image carrier. The rotary member is rotatable between a plurality of stop positions. A moto... | 10/28/2008 |
| 7437102 | Image forming apparatus with controlled adjustment of toner stored in developing cartridge An image forming apparatus includes development cartridges which develop an electrostatic latent image with toner, a rotary unit provided with the developing cartridges, an intermediate transfer belt which receives the toner image, and a controller. A length of the ... | 10/14/2008 |
| 7437103 | Imaging apparatus An imaging apparatus includes a toner ejection mode whereby toner stored in a black developing container is completely removed from the developing container by rotating a rotary developing unit at a specific timing and using gravity and the centrifugal force that ac... | 10/14/2008 |
| 7428387 | Image forming apparatus and method for detecting the color information and positions of developing units An image forming apparatus and method for reproducing an image includes a plurality of color developing units, and a developing unit detector configured to detect a type and a position of each of the plurality of color developing units. A printer control unit contro... | 09/23/2008 |
| 7426359 | Color image forming device having a movable toner supply member being disposable in a laser light path An image forming device is disclosed, and includes a photosensitive drum, a laser unit for irradiating the photosensitive drum with laser light, developing units for developing the electrostatic latent image on the surface of the photosensitive drum, a toner contain... | 09/16/2008 |
| 7414741 | Printer with manual collation control The present invention relates to a printer for printing a collated multi-page document when presented with a plurality of manually collated pages, the printer including a code sensor which senses machine-readable codes on the manually collated pages, a control unit ... | 08/19/2008 |
