| Patent Number |
Title Of Patent |
Date Issued |
| 7609998 |
Transfer unit and image forming apparatus |
October 27, 2009 |
| A transfer belt is driven by a plurality of supporting rollers. A unit frame supports the supporting rollers in a rotatable manner. At least one of the supporting rollers includes a cylindrical member having a substantially same outer diameter over an entire length thereof. Each end |
| 7555236 |
Image forming method and apparatus for effectively performing a cleaning operation of a transfer |
June 30, 2009 |
| An image forming apparatus includes an image bearing member configured to bear an image on a surface thereof, a transfer unit configured to transfer the image formed on the surface of the image bearing member onto a recording medium, a bias applying unit configured to apply a bias vo |
| 7519303 |
Image forming apparatus with color shift correction |
April 14, 2009 |
| An image forming apparatus includes an intermediate transfer belt that moves while keeping contact with a photosensitive element at a transfer position, a control pattern forming unit that forms a control pattern on the intermediate transfer belt, a control pattern detecting unit that |
| 7499665 |
Belt device including an annular belt, and an image forming apparatus for detection of rotationa |
March 3, 2009 |
| One end of a rotational shaft of a supporting rotational body attached with a rotational member is rotatably supported. The rotational member is sandwiched by a supporting frame that rotatably supports supporting rotational bodies spanned with an annular belt and fixing members fixed |
