Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9057984 | Powder container, toner cartridge, drawer tray, and image forming apparatus | Keiichi Yoshida, Hiroshi Ikeguchi, Shinji Tamaki | 2015-06-16 |
| 8953986 | Powder container, powder conveying apparatus, and image forming apparatus | Keiichi Yoshida, Hiroshi Ikeguchi | 2015-02-10 |
| 8849163 | Powder conveying apparatus, image forming apparatus, and powder container | Hiroshi Ikeguchi, Keiichi Yoshida | 2014-09-30 |
| 8781375 | Powder container, powder conveying apparatus, and image forming apparatus | Keiichi Yoshida, Hiroshi Ikeguchi | 2014-07-15 |
| 7599650 | Developer bearing member, developing device, process cartridge and image forming apparatus | Katsumi Masuda, Hideo Yoshizawa, Yoshio Hattori, Hideki Kimura, Kiyotaka Sakai +4 more | 2009-10-06 |
| 6859634 | Toner refilling device and developing device using the same for an image forming apparatus | Fumihito Itoh, Hirosato Amano, Kunio Makino, Takamichi Enomoto, Hiroyuki Uemura | 2005-02-22 |
| 6522855 | Image forming apparatus and developing apparatus preventing uneven image density | Hideo Yoshizawa, Shinji Tamaki, Junichi Terai, Kiyonori Tsuda, Tsuyoshi Imamura +3 more | 2003-02-18 |
| 6337957 | Image forming apparatus and developing device with improved self toner density control | Shinji Tamaki, Tsuyoshi Imamura, Hideo Yoshizawa, Junichi Terai, Masayuki Yamane +5 more | 2002-01-08 |
| 6198895 | Developing device with improved developer circulation and toner density control | Kiyonori Tsuda, Tsuyoshi Imamura, Hideo Yoshizawa, Shinji Tamaki, Masayuki Yamane | 2001-03-06 |
| 6151471 | Toner supplying device, method and image forming apparatus using the same toner supplying device or method | Masasumi Yahata, Yuuji Kitajima | 2000-11-21 |
| 6097903 | Toner supplying device, toner container therefor and image forming apparatus using same toner supplying device and toner container | Masasumi Yahata, Yuuji Kitajima | 2000-08-01 |
| 6091912 | Tower supplying device and image forming apparatus using same toner supplying device | Yuuji Kitajima, Masasumi Yahata | 2000-07-18 |
| 5950062 | Toner sorting device for separating reusable toner from used toner and image forming apparatus using the same device | Masasumi Yahata, Yuji Kitajima, Satoshi Takano, Shin-ichi Kawahara, Fumihito Itoh +1 more | 1999-09-07 |
| 5950055 | Powder pump and image forming apparatus having the powder pump and method therefor | Masazumi Yahata, Yuuji Kitajima, Masakuni Konja, Satoshi Takano, Fumihito Itoh | 1999-09-07 |
| 5227847 | Image forming equipment with supplemental developer detecting device | Hiroomi Motohashi | 1993-07-13 |
| 5182601 | Image forming apparatus having toner handling units which are alternatively usable as a developing device or a cleaning device | Takashi Hodoshima | 1993-01-26 |
| 4987449 | Method of sensing a remaining amount of developer for a color image forming apparatus | — | 1991-01-22 |
| 4922301 | Rotary multicolor developing apparatus | Noriyuki Kimura, Yoshihiro Sakai, Sigekazu Enoki | 1990-05-01 |
| 4885223 | Method and apparatus for developing electrostatic latent image | Shigekazu Enoki, Noboru Sawayama, Noriyuki Kimura | 1989-12-05 |
| 4733267 | Apparatus for developing electrostatic latent image | Shigekazu Enoki, Noriyuki Kimura | 1988-03-22 |
| 4384785 | Charge quenching apparatus for electrophotographic copying machine | Hidefumi Nishitsuji | 1983-05-24 |