Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7929888 | Developing unit and image forming apparatus employing the same | — | 2011-04-19 |
| 7715748 | Electrophotographic image forming apparatus and developing method thereof | Masahiko Itaya, Tsutomu Sasaki | 2010-05-11 |
| 7711277 | Toner density estimating method and apparatus using toner image and toner supplying method and apparatus | Myung-kook Ahn | 2010-05-04 |
| 7519318 | Electrophotolithographic image forming device and image developing method | Naonori Kurogawa, Masahiko Itaya, Tsutomu Teraoka, Tsutomu Sasaki, Myung-kook Ahn | 2009-04-14 |
| 7489893 | Hybrid type developing apparatus and developing method | Tsutomu Teraoka, Masahiko Itaya, Tsutomu Sasaki, Myung-kook Ahn, Naonori Kurogawa | 2009-02-10 |
| 7228085 | Color image forming apparatus | — | 2007-06-05 |
| 7177562 | Transfer power supply apparatus of an image forming machine | — | 2007-02-13 |
| 7158741 | Developing device for liquid electrophotographic image forming apparatus | Sung Dae Kim, In-yong Song, Joong-gwang Shin | 2007-01-02 |
| 7110685 | Transfer power supply apparatus of an image forming machine | — | 2006-09-19 |
| 7058333 | Color image forming apparatus | — | 2006-06-06 |
| 7054565 | Electrophotographic image forming apparatus and method of controlling development using information concerning replacement of consumables | — | 2006-05-30 |
| 6895204 | Electrophotographic printer having image charging unit to reduce adhesive force of transferred image and method thereof | — | 2005-05-17 |
| 6778799 | Liquid electrophotographic image forming apparatus using non-volatile ink carrier | In-yong Song, Jeong-hun Pang | 2004-08-17 |
| 6766130 | Liquid developer imaging system | In-yong Song, Kwang-ho No, Hyun-seong Shin, Geun-yong Park, Jong Woo Kim +7 more | 2004-07-20 |
| 6738585 | Image forming apparatus for and method of compensating for variation in thickness of photosensitive body and development mass per area | In-yong Song | 2004-05-18 |
| 6389256 | Liquid electrophotographic color image forming apparatus and color image forming method for reducing the transfer of toner to a developing roller | In-yong Song | 2002-05-14 |
| 6385424 | Electrophotographic printing apparatus and image transferring method for an electrophotographic printing apparatus | Won-hyung Lee, Hyung Jin Ahn | 2002-05-07 |
| 6289184 | Apparatus for measuring concentration of developer of liquid printer | Yong-baek Yoo, Hee-guk Kwak | 2001-09-11 |
| 6263176 | Apparatus for cleaning transfer roller and optical photoreceptor of printing device | Hyung-jin An | 2001-07-17 |
| 6104893 | Image forming device and method having optimum print quality by control of fixture temperature and/or transfer voltage | Sang-Hyeon Byeon, Nam-ryoung Kim, Seung-deok An | 2000-08-15 |
| 5978616 | Contact charger of an electrophotographic image forming apparatus | — | 1999-11-02 |
| 5517223 | Inkjet printing method and apparatus | — | 1996-05-14 |