Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9256169 | Image forming apparatus and method of initializing and cleaning a transfer roller therin | Won-chul Jung, Byoung-chul Bae, Gun-Ho Kim | 2016-02-09 |
| 8824004 | Image forming apparatus controlling performance of a functional printing and image forming method thereof | Jeong Hwan Kim, Byoung-chul Bae | 2014-09-02 |
| 8639148 | Image forming apparatus and control method thereof | Jeong Hwan Kim, Myung-song Jung | 2014-01-28 |
| 8577276 | Structure to guide print medium and image forming apparatus employing the same | Jeong Hwan Kim | 2013-11-05 |
| 8315547 | Image forming apparatus and control method thereof | Won-chul Jung | 2012-11-20 |
| 8160465 | Image forming apparatus and control method thereof | Jeong Hwan Kim | 2012-04-17 |
| 8160483 | Image forming apparatus which can prevent inferior image quality due to current leakage | Sun-Woo Lee, Won-chul Jung | 2012-04-17 |
| 7983580 | Image forming apparatus and control method thereof | Jeong Hwan Kim | 2011-07-19 |
| 7937009 | Image forming apparatus and method of controlling the same according to bias voltages | — | 2011-05-03 |
| 7925176 | Transfer voltage control method of image forming apparatus | — | 2011-04-12 |
| 7899378 | Image forming apparatus having movable belt | Se-ra Lee | 2011-03-01 |
| 7835657 | Image forming apparatus and control method thereof | Kyung Hwan Kim | 2010-11-16 |
| 7693438 | Image transfer device, image forming apparatus having the image transfer device, and method of measuring resistance of a printing medium or an endless track belt of the image forming apparatus | — | 2010-04-06 |
| 7546047 | Image forming apparatus and method of controlling the same having fixed developing apparatuses | — | 2009-06-09 |
| 7447455 | Color image forming apparatus and mono color printing method thereof | Yong-baek Yoo | 2008-11-04 |
| 7418221 | Transfer unit used with image forming apparatus | Mun-bae Park | 2008-08-26 |
| 7412195 | Image forming apparatus having means to prevent image quality degradation | Moon-bae Park | 2008-08-12 |
| 7317890 | Apparatus for and method of printing a mono-color image using a single-pass color printer | — | 2008-01-08 |
| 7123870 | Intermediate transfer belt of image forming apparatus for sending initial printing position, apparatus using the image transfer belt, and method thereof | Moon-bae Park | 2006-10-17 |
| 7120367 | Method of controlling a transfer voltage for an image forming apparatus | Kyung Hwan Kim | 2006-10-10 |
| 7062186 | Method of measuring resistance of a transfer roller | — | 2006-06-13 |
| 6928254 | Apparatus and method of forming multi-color images | Min Ho Choi, Kyung Hwan Kim | 2005-08-09 |
| 6889016 | Image forming apparatus having surface potential measuring unit and method of controlling development voltage utilizing the same | — | 2005-05-03 |
| 6889025 | Color image forming apparatus having developers in a fixed position with respect to a photosensitive medium | — | 2005-05-03 |
| 6815134 | Photoconductive drum in an image forming apparatus and method thereof | — | 2004-11-09 |