| Patent Number |
Title Of Patent |
Date Issued |
| 7593670 |
Charging device including a contact charging member with silica thereon, process cartridge inclu |
September 22, 2009 |
| A charging device for electrically charging an image bearing member, includes a contact charging member contactable to the image bearing member to charge the image bearing member, the contact charging member being supplied only with a DC voltage; and a contact member contacted to the |
| 7457554 |
Image forming apparatus wherein an image forming region and a non-image forming region are charg |
November 25, 2008 |
| An image forming apparatus includes a rotatable image bearing member on which an electrostatic latent image is formed, a charging member, and a transfer member. A charging potential of the charging member is different between when the charging member provides a first region on the image |
| 7277659 |
Image forming apparatus and seal retractor |
October 2, 2007 |
| An electrophotographic image forming apparatus for forming an image on a recording material, to which a cartridge is detachably mountable. The cartridge includes portion for accommodating a developer for developing an electrostatic latent image formed on an electrophotographic photos |
| 7209690 |
Developing apparatus |
April 24, 2007 |
| A developing apparatus including: a developer carrying member for carrying a developer, the developer carrying member being provided with an elastic layer and adapted to develop, with a developer, an electrostatic image formed on an image bearing member; wherein the developer includes a |
| 7200350 |
Image forming apparatus switching developing rollers of mounted process cartridges between conta |
April 3, 2007 |
| A color electrophotographic image forming apparatus for forming an image on a recording material, includes (i) a mounting portion for detachably mounting process cartridges developing images with different colors and each including an electrophotographic photosensitive drum and a dev |
| 6912366 |
IMAGE FORMING APPARATUS COMPRISING MEANS FOR DETECTING AN AMOUNT OF DEVELOPER CONTAINED IN A DEV |
June 28, 2005 |
| An image forming apparatus or a cartridge detachably attachable to the image forming apparatus is provided, wherein the apparatus comprises developer container for containing developer, developer amount detecting means for detecting an amount of the developer contained in the developer |
| 6714745 |
Image forming apparatus having a plurality of image forming stations, and unit detachably mounta |
March 30, 2004 |
| The present invention provides an image forming apparatus that has a plurality of image forming stations for forming an image on a recording material, each of the plurality of image forming stations having a memory, and writing device for writing data into the memories, wherein when the |
| 6587649 |
Image forming apparatus, cartridge detachably mountable to the image forming apparatus, develope |
July 1, 2003 |
| An image forming apparatus includes a developer container for containing a developer; a developer amount detector for detecting the amount of the developer contained in the developer container; a memory; and a calculator for calculating a display level of the remaining amount of the deve |
| 6584291 |
IMAGE FORMING APPARATUS FOR CALCULATING A PRINTABLE NUMBER OF SHEETS AND A CARTRIDGE DETACHABLY |
June 24, 2003 |
| An image forming apparatus is provided, which comprises a developer container for containing developer, a developer amount detector for detecting an amount of the developer contained in the developer container, a pixel number counter for counting the number of pixels required for for |
| 6546212 |
Image forming apparatus and unit detachably attachable to the same image forming apparatus and i |
April 8, 2003 |
| The present invention provides an image forming apparatus which has image forming device for forming an image on a recording material, at least one component element of the image forming means being formed in a unit and detachably attachable to a main body of said apparatus, and output d |
| 6493519 |
Image forming apparatus having a plurality of image forming stations, and unit detachably mounta |
December 10, 2002 |
| The present invention provides an image forming apparatus that has a plurality of image forming stations for forming an image on a recording material, each of the plurality of image forming stations having a memory, and writing device for writing data into the memories, wherein when the |
| 6415127 |
Developing apparatus having a direct or alternating current applied thereto |
July 2, 2002 |
| A developing apparatus has a developer bearing member for bearing and carrying a nonmagnetic developer, a layer thickness regulating member for regulating a layer thickness of the developer borne by the developer bearing member, developing bias applying device for applying an alterna |
| 6415125 |
Developing apparatus featuring an area where a partly exposed developer agitating member and con |
July 2, 2002 |
| A developing apparatus and an image forming apparatus for agitating a two-component developer throughly in a short time, feeds a developer with an even toner concentration to a developer bearing body and stably forms a high-quality image free from defects at any time. A developer agitati |
| 6347198 |
Image forming apparatus having developer amount detecting means and cartridge detachably mountab |
February 12, 2002 |
| An image forming apparatus has a developer container for containing a developer, a developer amount detecting device for detecting the amount of the developer contained in the developer container, a consumed amount calculating device for calculating the consumed amount of the developer, |
