| Patent Number |
Title Of Patent |
Date Issued |
| 7561817 |
Toner cartridges, development cartridges, and image forming apparatus including such cartridges |
July 14, 2009 |
| An image forming apparatus includes: an electrostatic latent image bearing member; a toner cartridge; a developing member; a transfer member; a development cartridge; a development contact; and electrical connection units. The toner cartridge is removably coupled to the development c |
| 7555251 |
Image forming apparatus and toner cartridge |
June 30, 2009 |
| An image forming apparatus includes: an image carrier on which an electrostatic latent image is formed; a toner cartridge detachably mountable to the image forming apparatus, including a toner casing accommodating a developing agent, an opening/closing member which opens/closes an op |
| 7526227 |
Image forming apparatus and cartridge |
April 28, 2009 |
| An image forming apparatus includes a belt unit, a plurality of photosensitive drums, a cartridge, a casing, a cartridge holding unit and a first guide unit. The looped belt has a first surface outside of the loop, and is stretched to form a substantially straight portion on the loop |
| 7489889 |
Image formation apparatus and photoreceptor cartridge |
February 10, 2009 |
| An image forming apparatus, includes: a mainframe; a photoreceptor; an exposing unit that exposes a surface of the photoreceptor to form an electrostatic latent image; and a developing unit that develops the electrostatic latent image by supplying a charged developer on the surface o |
| 7489888 |
Image-forming apparatus including a cartridge loading section in communication with a cartridge |
February 10, 2009 |
| An image-forming device has a main casing, a cartridge, and a guiding unit. The main casing has a cartridge access opening and a cartridge loading section in communication with the cartridge access opening. The cartridge access opening has an opening plane. The cartridge is detachabl |
| 7486909 |
Image forming apparatus with a plurality of drum cartridges and a plurality of developer cartrid |
February 3, 2009 |
| An image forming apparatus, includes: a mainframe; a photoreceptor; an exposing unit that exposes a surface of the photoreceptor to form an electrostatic latent image; and a developing unit that develops the electrostatic latent image by supplying a charged developer on the surface o |
| 7486904 |
Multicolor image forming apparatus and image making device |
February 3, 2009 |
| An image forming apparatus, includes: a plurality of image making units each having a charger; a transfer unit, a fixing unit configured to fix the multicolor developer image transferred by the transfer unit on a transfer medium. An exhaust air passage portion overlaps with at least a |
| 7463847 |
Image-forming apparatus having developing units in removable holding unit |
December 9, 2008 |
| An image-forming apparatus includes: a main body; at least one photosensitive member; an exposing unit; a plurality of developing units; a transferring unit; and a first holding unit. The photosensitive member has an axis. The first holding unit holds the plurality of developing unit |
| 7457563 |
Photosensitive member cartridge |
November 25, 2008 |
| 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 wall, and the side walls. |
| 7447467 |
Image-forming device with holding unit having multiple positions |
November 4, 2008 |
| An image-forming device includes: a main body; at least one photosensitive member; a plurality of developing units; a transferring unit; a first holding unit; and a guiding unit. The photosensitive member has a support shaft. Each developing unit has a developer-accommodating section tha |
| 7444100 |
Image forming apparatus with a removable holder for holding developing devices |
October 28, 2008 |
| 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 may include a holder, |
| 7415223 |
Image formation apparatus and photoreceptor cartridge |
August 19, 2008 |
| An image forming apparatus, includes: a mainframe; a photoreceptor; an exposing unit that exposes a surface of the photoreceptor to form an electrostatic latent image; and a developing unit that develops the electrostatic latent image by supplying a charged developer on the surface o |
| 7395008 |
Image formation apparatus and photoreceptor cartridge |
July 1, 2008 |
| An image forming apparatus, includes: a mainframe; a photoreceptor; an exposing unit that exposes a surface of the photoreceptor to form an electrostatic latent image; and a developing unit that develops the electrostatic latent image by supplying a charged developer on the surface o |
| 7366446 |
Image forming apparatus and method with variable photosensitive drum to developing roller speed |
April 29, 2008 |
| An image forming apparatus includes a photosensitive drum, a developing roller, a photosensitive drum driving unit, a developing roller driving unit, and a driving control unit. An electrostatic latent image is formed on the photosensitive drum. The developing roller is disposed facing t |
| 7352378 |
Image forming device |
April 1, 2008 |
| An image forming device includes an image forming unit and a thermal fixing unit. The image forming unit uses a plurality of different color developing agents to form a color image on a recording medium. The plurality of different color developing agents are configured from binding r |
| 7313346 |
Image formation apparatus and photoreceptor cartridge |
December 25, 2007 |
| An image forming apparatus, includes: a mainframe; a photoreceptor; an exposing unit that exposes a surface of the photoreceptor to form an electrostatic latent image; and a developing unit that develops the electrostatic latent image by supplying a charged developer on the surface o |
| 7274894 |
Image formation apparatus and photoreceptor cartridge |
September 25, 2007 |
| An image forming apparatus, includes: a mainframe; a photoreceptor; an exposing unit that exposes a surface of the photoreceptor to form an electrostatic latent image; and a developing unit that develops the electrostatic latent image by supplying a charged developer on the surface o |
| 7245850 |
Photosensitive member cartridge |
July 17, 2007 |
| 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 wall, and the side walls. |
| 7231167 |
Photosensitive member cartridge |
June 12, 2007 |
| 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 wall, and the side walls. |
| 7224923 |
Photosensitive member cartridge |
May 29, 2007 |
| 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 wall, and the side walls. |
| 7221892 |
Developing device used in image forming device |
May 22, 2007 |
| A developing device includes a removing roller positioned vertically above a supplying roller and in contact with a developing roller. Positively charged toner is supplied from the supplying roller to the developing roller and then supplied to a photosensitive drum for developing an |
| 7218878 |
Photosensitive member cartridge |
May 15, 2007 |
| 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 wall, and the side walls. |
| 7194219 |
Image-forming device having image-scanning unit |
March 20, 2007 |
| A multifunction device includes a scanner for scanning an image from an original document, and a printer body provided with an image-forming unit for forming an image on a paper based on image data read by the scanner. The scanner is provided on the front side of the main printer body, a |
| 7184685 |
Image forming apparatus and process cartridge |
February 27, 2007 |
| A charger and a developing roller are disposed substantially in a line on both sides of a photosensitive drum in a cross sectional view in a direction perpendicular to an axis of the photosensitive drum, so that no process device is disposed on an upper portion of the photosensitive |
| 7165766 |
Sheet feeding cassette and image forming apparatus |
January 23, 2007 |
| A sheet feeding cassette is configured so as to be able to be attached to and removed from an image forming apparatus main body having an image forming section and is equipped with a box-shaped accommodation portion capable of accommodating a plurality of sheets. A grip to be used for |
| 7136613 |
Multicolor image forming apparatus and image making device |
November 14, 2006 |
| An image forming apparatus, includes: a plurality of image carriers each carrying a developer image; a primary transfer belt opposed to the plurality of image carriers and configured to carry a multicolor developer image; a secondary transfer unit opposed to the primary transfer belt |
| 7046946 |
Development unit for developing electrostatic latent images |
May 16, 2006 |
| A development unit performing developing operation for developing electrostatic latent image with toner. The development unit includes a holding chamber wall defining a toner holding chamber, and a development chamber wall defining a development chamber in which a developing roller a |
| 7035568 |
Image forming device including image reader |
April 25, 2006 |
| An image forming device includes an image forming section and an image reader section disposed above the image forming section. A main casing that houses the image forming section is formed with a sheet discharge opening formed in either its front or rear surface. A sheet discharge t |
| 7002608 |
Tandem type color image forming device having a plurality of process cartridges arrayed in runni |
February 21, 2006 |
| A tandem type color image forming device having a plurality of process cartridges each being detachable from a frame. An intermediate image transfer belt extends vertically, and the process cartridges are arrayed in the vertical direction and supported by the frame. Each process cart |
| 6917781 |
Developer regulating member for an image forming apparatus |
July 12, 2005 |
| In an image forming apparatus where toner is supplied to a photosensitive member via a toner supply roller and a developing roller, the toner being charged by the friction contact between toner supply roller and the developing roller, a regulating blade is in contact with the developing |
| 6904256 |
Image forming device |
June 7, 2005 |
| An image forming device includes an image forming unit and a thermal fixing unit. The image forming unit uses a plurality of different color developing agents to form a color image on a recording medium. The plurality of different color developing agents are configured from binding r |
| 6873810 |
Photosensitive member cartridge |
March 29, 2005 |
| 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 wall, and the side walls. |
| 6871033 |
Development unit with restrictor for developing electrostatic latent images with improved densit |
March 22, 2005 |
| A development unit performing developing operation for developing electrostatic latent image with toner. The development unit includes a holding chamber wall defining a toner holding chamber, and a development chamber wall defining a development chamber in which a developing roller a |
| 6798430 |
Tandem type color image forming device having a plurality of process cartridges arrayed in runni |
September 28, 2004 |
| A tandem type color image forming device having a plurality of process cartridges each being detachable from a frame. An intermediate image transfer belt extends vertically, and the process cartridges are arrayed in the vertical direction and supported by the frame. Each process cart |
| 6721524 |
Image forming device to fix color images from a plurality of developing agents |
April 13, 2004 |
| An image forming device includes an image forming unit and a thermal fixing unit. The image forming unit uses a plurality of different color developing agents to form a color image on a recording medium. The plurality of different color developing agents are configured from binding r |
| 6690903 |
Photosensitive member cartridge |
February 10, 2004 |
| 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 wall, and the side walls. |
| 6546217 |
Photosensitive member cartridge |
April 8, 2003 |
| 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 wall, and the side walls. |
| 6456813 |
Developing apparatus and image forming apparatus that maintains a substantially constant charge |
September 24, 2002 |
| A developing apparatus in which variations in density caused by different development histories are reduced, and a high-quality halftone image is reproduced. When m1 represents a weight per unit area of a thin layer of developing agent that is pressed again by a layer thickness-regulatin |
| 6445899 |
Tandem color image forming device capable of forming high-quality color images |
September 3, 2002 |
| A color image forming device capable of preventing image from being degraded due to image transfer operations. A plurality of photosensitive drums are positioned in alignment in a rotational direction of intermediate recording medium. A plurality of developing rollers are provided in |
| 6411789 |
Photosensitive member cartridge |
June 25, 2002 |
| 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 wall, and the side walls. |
| 6330410 |
Photosensitive member cartridge |
December 11, 2001 |
| 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 wall, and the side walls. |
| 6256471 |
Image developing device and image forming apparatus |
July 3, 2001 |
| The invention concerns a pressing portion of a layer thickness-regulating blade for pressing toner on a developing roller and forming a thin layer of toner is formed from a silicone rubber. The pressing force of the pressing portion is set to 15-30 gf/cm. Since toner is pressed against t |
| 6195522 |
Developing device |
February 27, 2001 |
| An image forming device has an image regulating structure including a thickness-regulating blade that makes contact with a developing roller. Toner applied to the developing roller passes between the layer thickness-regulating blade and the developing roller to form a thin toner laye |
| 6141519 |
Image-forming apparatus having at least one of additives in the non-magnetic single-component to |
October 31, 2000 |
| An image-forming apparatus including, an electrostatic latent image carrier on the surface of which are formed electrostatic latent images; a scorotron type of charger that charges the surface of the electrostatic latent image carrier uniformly by corona discharge; an electrostatic l |
| 6128458 |
Image forming device with toner charge increasing structure |
October 3, 2000 |
| A printer includes a developing roller and a positively charged photosensitive drum. The printer performs impression development by pressing positively charged toner at a nip portion between the photosensitive drum and the developing roller. A developing agent is formed from toner an |
| 6101350 |
Photosensitive member cartridge and developer cartridge for use in an image-forming apparatus |
August 8, 2000 |
| A photosensitive member cartridge, having a photosensitive drum, is provided with guide grooves formed in opposite side walls of the photosensitive member cartridge. The guide grooves extend in an accurate shape from an upwardly open accommodating portion to a vicinity of a shaft of |
| 6041203 |
Process unit, photosensitive member cartridge, developer cartridge, and image forming apparatus |
March 21, 2000 |
| A process unit detachably attachable to an image forming apparatus includes a photosensitive member cartridge having a photosensitive member, and a developer cartridge having a developing roller that supplies a developer to the photosensitive member. Urging devices are provided on right |
| 6006060 |
Image-forming apparatus with potential applied to layer thickness restricting blade |
December 21, 1999 |
| An image-forming apparatus is provided that can form good images stably by uniformly and stably charging a non-magnetic single-component developer (such as a toner). In this apparatus, a DC power supply applies a positive voltage Vd to a development roller, and a DC power supply applies |
| 5867755 |
Electrophotographic type image forming device and developing roller for use in the device |
February 2, 1999 |
| An electrophotographic type image forming device having a developing roller and a photosensitive drum. A nip portion is provided therebetween for supplying developing agents from the developing roller to the photosensitive drum. The developing roller and the photosensitive drum are r |
| 5839034 |
Image forming device having a photosensitive drum and developing roller that rotate in the same |
November 17, 1998 |
| An image forming device for forming images on a sheet transported along a sheet-transport pathway from a sheet supply tray to a sheet discharge unit includes a photo-sensitive drum rotated in a predetermined rotational direction at a predetermined peripheral speed, the photosensitive dru |
