Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8579775 | Supply roller of developing device for image forming apparatus and method of manufacturing the same | Tae Hyun Kim | 2013-11-12 |
| 8422915 | Developer cartridge, developing device, and image forming apparatus having the same | Sam-seok Choi, Seung-gweon Lee, Jean-Man Sur | 2013-04-16 |
| 8412074 | Charging roller for image forming apparatus and manufacturing method thereof | Young-Sub Shin, Hee-Won Jung, Do-kwan Lee | 2013-04-02 |
| 8315544 | Image forming apparatus including developer contact media having nano-scale roughness | Cheol-soo Yang, Jean-Man Sur | 2012-11-20 |
| 8213838 | Developing apparatus, image forming apparatus having the same, and developer supplying method for a developing apparatus | Joo-hwan Noh, Jean-Man Sur | 2012-07-03 |
| 8155558 | Developing cartridge, image forming apparatus having the same, and printing method for an image forming apparatus | Joo-hwan Noh, Jean-Man Sur | 2012-04-10 |
| 7890022 | Cover member, developing cartridge and developing unit for image forming apparatus | Dae-seob Kweon, Joo-hwan Noh, Jean-Man Sur | 2011-02-15 |
| 7702259 | Multi-pass image forming apparatus and image forming method using the same for providing plural print modes with different numbers of passes depending on desired print speed and image quality | Hisao Okada, Hyun-Cheol Lee, Won-hee Choe, Hyun-wook Bae, Won-Wook Lee +2 more | 2010-04-20 |
| 7516318 | Method of controlling an image forming apparatus | — | 2009-04-07 |
| 7450893 | Electrophotographic color image forming apparatus having a plurality of transfer rollers | Byung-sun Ahn | 2008-11-11 |
| 7252916 | Electro-photographic developing agent | Duck-hee Lee | 2007-08-07 |
| 7250243 | Nonmagnetic one-component toner for electrophotographic image forming apparatus | Duck-hee Lee | 2007-07-31 |
| 7144666 | Toner used with electrophotography | Duck-hee Lee | 2006-12-05 |
| 7123861 | Contactable charging type charging device for image formation apparatus, and method of manufacturing the same | — | 2006-10-17 |
| 6845223 | Image forming apparatus to form uniform nip | Hyun-wook Bae | 2005-01-18 |
| 6810223 | Developing apparatus and method in image forming apparatus | Duck-hee Lee | 2004-10-26 |
| 6383702 | Dry toner of polymerization type for electronic photography | Seung-min Ryu, Seung-Soon Jang, Soon-nam Kim, Hee-Won Jung, Moon Soo Park +1 more | 2002-05-07 |
| 6033053 | Ink-jet printer with a drum cartridge having a plurality of heads | — | 2000-03-07 |
| 5854644 | Electromagnetic ink-jet printhead for image forming apparatus | — | 1998-12-29 |
| 5787320 | Toner density adjusting method for an image recording apparatus | Yoon-tae Lee | 1998-07-28 |