Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8086153 | Developing apparatus usable with image forming apparatus, image forming apparatus having the same, method to prevent developer from flowing out the developing apparatus | In-cheol Jeon | 2011-12-27 |
| 7447455 | Color image forming apparatus and mono color printing method thereof | Myung-ho Kyung | 2008-11-04 |
| 7263310 | Housing assembly of OPC unit | Chung-guk Baek | 2007-08-28 |
| 7260343 | Gear assembly used with an image forming apparatus, an optical photoconductive (OPC) unit having the same, and a method of driving the gear assembly | Chung-guk Baek | 2007-08-21 |
| 7164876 | Photoreceptor unit | Chung-guk Baek | 2007-01-16 |
| 6819887 | Apparatus and method for measuring concentration of developer in liquid printer | Yoon-seop Eom, Seung-deog An, Jong Woo Kim | 2004-11-16 |
| 6807394 | Apparatus for connecting and disconnecting developing bias power supply | — | 2004-10-19 |
| 6718156 | Waste toner collecting apparatus of electrophotographic image forming device | Jin Soo Lee | 2004-04-06 |
| 6704530 | Method for forming image in electrophotographic printer | — | 2004-03-09 |
| 6694118 | Developing apparatus of electrophotographic printer | — | 2004-02-17 |
| 6413318 | Sheet coating apparatus | Kyung-yol Yon | 2002-07-02 |
| 6289184 | Apparatus for measuring concentration of developer of liquid printer | Kyu-cheol Shin, Hee-guk Kwak | 2001-09-11 |
| 6101342 | Apparatus and method for measuring developer contamination of printer | Yoon-seop Eom, Won-hyung Lee | 2000-08-08 |
| 6091914 | Liquid developer concentration measuring apparatus of an image processor | — | 2000-07-18 |
| 5970289 | Apparatus for eliminating excess ions of a developer for liquid electrophotographic printer | — | 1999-10-19 |
| 5933685 | Apparatus for detecting concentration of developer by measurement of optical transmissivity | — | 1999-08-03 |
| 5897240 | Concentration measuring device of electrographic printer | — | 1999-04-27 |
| 5890039 | Apparatus for preventing toner from settling in a wet developing unit | — | 1999-03-30 |
| 5828927 | Method of preventing back side of paper from contamination in electrophotography printer | Moon Sik LEE, Tagoku Izumi | 1998-10-27 |
| 5812904 | Image forming apparatus and method for controlling charging potential differently between image forming area and non-image forming area of photosensitive drum | Chang-soo Rhee | 1998-09-22 |
| 5812905 | Method and apparatus for controlling a charge voltage of an OPC drum to be an optimum value | — | 1998-09-22 |
| 5758225 | Method and device for supplying a variable bias voltage to a developing roller | Duk Soo Kim | 1998-05-26 |
| 5666596 | Process cartridge of an image forming device | — | 1997-09-09 |