| Patent Number |
Title Of Patent |
Date Issued |
| 7373101 |
Method and apparatus for image forming and effectively applying lubricant to an image bearing me |
May 13, 2008 |
| A lubricant supplying device including a molded lubricant having a Martens hardness of approximately 40 N/mm.sup.2 to approximately 70 N/mm.sup.2 measured with a test force of 50 mN and a load-applying period of 30 seconds, a rotative member including a fibrous brush of a thickness of |
| 7344615 |
Method and apparatus for performing a charging process on an image carrying device |
March 18, 2008 |
| A charge roller that includes a metal core, an elastic member configured wrapped around the metal core, and film members is disclosed. Each of the film members is wrapped around each end of the elastic member in a circumferential direction of the metal core such that at least a part of |
| 7333744 |
Image forming apparatus that charges a photosensitive member by superimposing an alternate curre |
February 19, 2008 |
| A charge apparatus charges by uniformly superimposing an alternate current bias voltage with a fixed frequency over a direct current bias voltage as the charge bias voltage on a photosensitive member. An exposure apparatus exposes the surface of the charged photosensitive member based on |
| 7321742 |
Image forming apparatus, drum unit, image forming module, and method of insertion and removal of |
January 22, 2008 |
| An image forming apparatus includes a photoreceptor belt formed by either a belt or a thin-walled cylinder. A charging unit that sets bias characteristics of the photoreceptor belt has an arrangement to approach towards the photoreceptor belt. A damper is provided on a side of the ph |
| 7010246 |
Image forming apparatus, drum unit, image forming module, and method of insertion and removal of |
March 7, 2006 |
| An image forming apparatus includes a photoreceptor belt formed by either a belt or a thin-walled cylinder. A charging unit that sets bias characteristics of the photoreceptor belt has an arrangement to approach towards the photoreceptor belt. A damper is provided on a side of the ph |
| 6977022 |
Method and apparatus for performing a charging process on an image carrying device |
December 20, 2005 |
| A charge roller that includes a metal core, an elastic member configured wrapped around the metal core, and film members is disclosed. Each of the film members is wrapped around each end of the elastic member in a circumferential direction of the metal core such that at least a part of |
| 6788913 |
Image forming apparatus method and developing device to obtain a stable image density |
September 7, 2004 |
| An image forming apparatus includes a latent image bearing member and a developing device for performing a two-level developing operation according to a threshold value of a potential on the latent image bearing member using a one-component developer including toner particles. The de |
| 6778797 |
Charging roller having elastic member |
August 17, 2004 |
| A charging device, an image forming apparatus including the charging device, an image carrier unit including the charging device and a charging roller, which faces a body to be charged and is applied with a voltage, are disclosed. The charging roller includes a metallic core and an elast |
| 6757508 |
Image carrier and damping member therefor |
June 29, 2004 |
| A damping member is fitted in the hollow cylindrical core of a photoconductive drum. The damping member is implemented as a hollow cylinder having one end thereof closed by an end wall. A jig is inserted into the damping member and caused to insert the damping member into the drum by |
| 6754462 |
Latent image carrier and image forming apparatus having a noise and deformation preventing membe |
June 22, 2004 |
| Disclosed is a latent image carrier provided with a structure in which noise generation can be prevented and an opposing gap between a charging device and the latent image carrier is prevented from being altered as well, whereby change in charging property is not generated and the fo |
| 6628912 |
Charge roller for an image forming apparatus and method of producing the same |
September 30, 2003 |
| A charge roller of the present invention includes a shaft, an elastic member affixed to the circumference of the shaft, and a plurality of spacers affixed to the elastic member. Assume that rising portions formed, when the circumference of the elastic member is ground during production, |
| 6546219 |
Method and apparatus for performing a charging process on an image carrying device |
April 8, 2003 |
| A charge roller that includes a metal core, an elastic member configured wrapped around the metal core, and film members is disclosed. Each of the film members is wrapped around each end of the elastic member in a circumferential direction of the metal core such that at least a part of |
| 6470161 |
Apparatus for minimizing toner contamination on an image formation member |
October 22, 2002 |
| To prevent deterioration of charge performance, which is caused by wear of a gap control member that keeps a charge roller into non-contact with the image carrier, the charge roller is brought into contact with a surface of a photosensitive drum via a pair of tape members as the gap cont |
| 6295438 |
Method and apparatus for forming an image capable of supplying a proper amount of a lubricant to |
September 25, 2001 |
| An image forming apparatus including a plurality of image forming sections each having an electrostatic latent image bearing member to form a latent image on its surface, a charging device to uniformly charge the electrostatic latent image bearing member, a developing device to develop |
| 6070030 |
Image forming cartridge for an image forming apparatus |
May 30, 2000 |
| An image forming cartridge removably mounted on an image forming apparatus includes an image carrier for electrostatically forming a latent image thereon by electrophotography. A plurality of image forming members execute image formation with the image carrier. A casing accommodates the |
| 5953568 |
Developing unit for an image forming apparatus having a magnetic rotating blade agitator |
September 14, 1999 |
| A developing unit of the present invention includes a developing roller facing a photoconductive element and formed with a magnetic layer on its circumference. The magnetic layer has a plurality of magnetic poles of opposite polarities alternating with each other and each extending in th |
| 5671465 |
Image forming apparatus having a revolver type developing device |
September 23, 1997 |
| In an image forming apparatus, a developing device is disposed adjacent to a belt-like photosensitive member. A rotary type developing device has a hollow cylindrical casing rotatable around a shaft having a central portion for rotation. The developing device includes a casing which is |
| 5655193 |
Developing device for image forming apparatus with toner recirculation operation |
August 5, 1997 |
| A developing device capable of obviating the cohesion of toner and reducing the amount of dead toner is disclosed. The device has a developing unit accommodating a first and a second screw therein. The first and second screws extend from the toner hopper to the other longitudinal end of |
| 5565973 |
Rotary developing device for an image forming apparatus |
October 15, 1996 |
| In an image forming apparatus, a rotary developing device effects development by revolving a plurality of developing sections around a rotary shaft until any one of them reaches a developing position where it faces an image carrier. Cartridges are respectively mounted to hoppers incl |
| 5537197 |
Rotary developing device for image forming apparatus |
July 16, 1996 |
| A rotary developing device for an image forming apparatus includes a plurality of rotary developing units accommodating a powder developer and being supported around a common axis, and a plurality of toner cartridges corresponding to the plurality of rotary developing units for supplying |
| 5515145 |
Color image forming apparatus having integral multiple length belt |
May 7, 1996 |
| A color image forming apparatus of the type having a photoconductive belt for forming a latent image thereon electrostatically. The latent image is developed to turn out a corresponding toner image. The toner image is transferred from the photoconductive belt to an intermediate transfer |
| 5512984 |
Revolver type developing device for an image forming apparatus |
April 30, 1996 |
| In an image forming apparatus, a revolver type developing device has a plurality of developing units and revolves to sequentially bring them to a developing position facing an image carrier on which a latent image is electrostatically formed. The revolver promotes easy replacement and sa |
| 5440373 |
Color image forming apparatus |
August 8, 1995 |
| An electrophotographic color image forming apparatus is disclosed which allows a photoconductive element and an intermediate transfer belt, which are expendables, to be removed from the body thereof at the same time. This promotes easy replacement, inspection and so forth of expendables. |
| 5424814 |
Developing device with microfields formed on developer carrier |
June 13, 1995 |
| A developing device for an image forming apparatus and using a one component type developer. The developer is transferred from a developer supply member to a developer carrier which are so rotated as to move in the same direction at a position where they contact each other. This prev |
| 5339141 |
Developing device with a developer carrier capable of forming numerous microfields thereon |
August 16, 1994 |
| A developing device applicable to an electrophotographic copier, facsimile transceiver, laser printer or similar image forming apparatus and having a developing roller for carrying a nonmagnetic single component type developer, i.e., a toner and a toner supply roller for supplying the to |
