Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7095967 | Image developing apparatus, process cartridge, electrophotographic image forming apparatus, and developing unit frame | Toshiyuki Karakama, Toru Oguma, Hideki Matsumoto | 2006-08-22 |
| 7068955 | Image forming apparatus having developer amount detector | Shinya Yamamoto, Hiroshi Sasame, Takashi Hibi, Hiroaki Ogata, Tomomi Kakeshita | 2006-06-27 |
| 7058319 | Image forming apparatus and cartridge detachably mountable thereto | Tomomi Kakeshita | 2006-06-06 |
| 6925267 | MEMORY DEVICE STORING INFORMATION WARNING A USER ABOUT THE DEVELOPER-REMAINING AMOUNT, A PROCESS CARTRIDGE INCLUDING A MEMORY STORING SUCH INFORMATION, AND A CONTROL SYSTEM AND A MEMORY SYSTEM FOR WARNING A USER ABOUT THE DEVELOPER-REMAINING AMOUNT | Shinya Yamamoto, Hiroshi Sasame, Takashi Hibi, Hiroaki Ogata, Tomomi Kakeshita | 2005-08-02 |
| 6912366 | IMAGE FORMING APPARATUS COMPRISING MEANS FOR DETECTING AN AMOUNT OF DEVELOPER CONTAINED IN A DEVELOPER CONTAINER, A MEMORY FOR STORING THE AMOUNT DETECTED BY THE DETECTING MEANS, AND CONTROL MEANS FOR UPDATING THE INFORMATION STORED IN THE MEMORY | Shinya Yamamoto, Hiroshi Sasame, Takashi Hibi, Hiroaki Ogata, Tomomi Kakeshita | 2005-06-28 |
| 6892035 | Developing device, a process cartridge, and an electrophotographic image forming apparatus for detecting an amount of developer | Hideki Matsumoto, Takeo Shoji, Toshiyuki Karakama, Toru Oguma, Katsuhiro Kojima | 2005-05-10 |
| 6859627 | Image developing apparatus, process cartridge, electrophotographic image forming apparatus, and developing unit frame | Toshiyuki Karakama, Toru Oguma, Hideki Matsumoto | 2005-02-22 |
| 6859626 | Process cartridge having storage device which communicates with image forming apparatus | Eiichiro Kimizuka, Masanobu Kanoto | 2005-02-22 |
| 6850714 | Image forming apparatus, cartridge, image forming system and storage medium | Kazumi Yamauchi, Tomomi Kakeshita | 2005-02-01 |
| 6807382 | Image forming apparatus and cartridge detachably mountable thereto | Tomomi Kakeshita | 2004-10-19 |
| 6694107 | Image forming apparatus and cartridge detachably mountable thereto | Tomomi Kakeshita | 2004-02-17 |
| 6608975 | Image forming apparatus and cartridge detachably mountable thereto | Tomomi Kakeshita | 2003-08-19 |
| 6597876 | Image forming apparatus and cartridge detachably mountable thereto | Tomomi Kakeshita | 2003-07-22 |
| 6516159 | Developer amount indicating method and electrophotographic image forming apparatus | — | 2003-02-04 |
| 6512895 | Process cartridge and electrophotographic image forming system | Toru Oguma, Hideki Matsumoto | 2003-01-28 |
| 6459861 | Image forming apparatus, and a cartridge having a developer container detachably mountable on such apparatus | Hiroshi Sato, Kazumi Yamauchi | 2002-10-01 |
| 6438327 | Process cartridge having storage device which communicates with image forming apparatus | Eiichiro Kimizuka, Masanobu Kanoto | 2002-08-20 |
| 6408143 | Electrophotographic image forming apparatus | Kazushi Watanabe, Toshiyuki Karakama, Hideki Matsumoto | 2002-06-18 |
| 6397018 | Developer amount detecting method, developing device, process cartridge and electrophotographic image forming apparatus | Hideki Matsumoto, Isao Ikemoto, Kazushi Watanabe, Toshiyuki Karakama | 2002-05-28 |
| 6330402 | Developer amount indicating method, electrophotographic image forming apparatus and process cartridge | Isao Ikemoto, Kazushi Watanabe, Toshiyuki Karakama, Hideki Matsumoto | 2001-12-11 |
| 5923917 | Image forming apparatus, and a cartridge having a developer container detachably mountable on such apparatus | Hiroshi Sato, Kazumi Yamauchi | 1999-07-13 |
| 5802419 | Image forming apparatus and process cartridge for image forming apparatus | Hiroshi Sato, Kazumi Yamauchi | 1998-09-01 |
| 5765077 | Charging member, charging device and process cartridge detachably mountable to image forming apparatus | Junichi Kato, Kouichi Suwa, Masaki Ojima, Hiroshi Sato, Satoru Inami +1 more | 1998-06-09 |
| 5682585 | Developing apparatus generating electric field between developer carrying member and developer layer regulating member | Seiji Yamaguchi, Takahiro Inoue, Junichi Kato, Kouichi Suwa, Masaki Ojima +4 more | 1997-10-28 |
| 5666606 | Image forming apparatus comprising contact type charging member | Keiji Okano, Takahiro Inoue, Tadashi Onimura, Kouichi Suwa, Masaki Ojima +3 more | 1997-09-09 |