Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7050732 | Electrophotographic image-forming apparatus and charging voltage control method thereof | Dyoung-chul Bae, Ui-choon Lee | 2006-05-23 |
| 7027757 | Image forming apparatus including a subsidiary transfer part having a fiber optic guide | — | 2006-04-11 |
| 7016618 | Method of detecting lifespan of transfer roller and electrophotographic image forming apparatus employing the method | — | 2006-03-21 |
| 6917770 | Charging voltage controller of image forming apparatus | Byoung-chul Bae, Ui-choon Lee | 2005-07-12 |
| 6806895 | Method and apparatus for an electrophotographic printer where voltage magnitude applied to charge roller and intensity of illumination unit vary depending on type of print job submitted | — | 2004-10-19 |
| 6750893 | Image forming apparatus and method controlling a laser scan unit | — | 2004-06-15 |
| 6246847 | Electronic photograph forming apparatus and method for controlling the same | Tai-eun Kwon, Sung-Gi Kim | 2001-06-12 |
| 6111594 | Method of and apparatus for controlling transfer voltage based on specific resistance of paper in laser beam printer | — | 2000-08-29 |
| 6070025 | Technique for controlling transfer voltage in an image forming apparatus in accordance with detected composite resistance between photoconductive drum and transfer roller | — | 2000-05-30 |
| 6021300 | Engine unit for image forming apparatus | — | 2000-02-01 |