Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8351810 | Method and apparatus for controlling voltage of image forming apparatus | — | 2013-01-08 |
| 8326164 | Charging voltage control method of image forming apparatus using constant voltage control and image forming apparatus thereof | — | 2012-12-04 |
| 7809302 | Charging device and image forming apparatus using the same | — | 2010-10-05 |
| 7574159 | Image forming apparatus and method of preventing carrier from adhering to photo receptor | — | 2009-08-11 |
| 7536119 | Image forming apparatus and a method thereof for supplying toner | — | 2009-05-19 |
| 7398037 | Process cartridge usable with an image forming apparatus and including a shutter | — | 2008-07-08 |
| 7392000 | Image forming apparatus to control a linear velocity ratio | — | 2008-06-24 |
| 7382991 | Apparatus and method for displaying toner residual quantity | — | 2008-06-03 |
| 7333763 | Developer collecting apparatus and an image forming apparatus having the same | — | 2008-02-19 |
| 7116927 | Photosensitive drum of image forming apparatus and method of damping vibration in the drum | — | 2006-10-03 |
| 7092648 | Method of controlling an amount of toner charging in an electrophotographic image forming apparatus and apparatus using the same | — | 2006-08-15 |
| 6954597 | Electrophotographic image-forming apparatus using two-component developer and print density control method thereof | — | 2005-10-11 |
| 6801732 | Developing apparatus of electric photographic printer | Chung-guk Baek | 2004-10-05 |