Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6308020 | Printer and transfer charger | Kenji Fuke | 2001-10-23 |
| 6212340 | Image forming apparatus utilizing a two-component developing apparatus with automatic toner replenishment and developer replacement | Katsumi Sugimoto, Kenji Fuke, Keiko Tonai, Hiroaki Yoshida, Eiji Suzuki +3 more | 2001-04-03 |
| 6055401 | Electrophotographic image-forming apparatus having developing device which includes a plurality of developing rollers | Hiroshi Sato, Toshio Hino, Toshimasa Toyama, Masaaki Ohyama, Osamu Watanabe +4 more | 2000-04-25 |
| 5987280 | Developing device for electrostatic latent image | Kunihiko Sato, Kenji Fuke, Tsutomu Kawai, Eiji Suzuki, Shozo Tonai +3 more | 1999-11-16 |
| 5933690 | Toner recovery device | Katsumi Sugimoto, Kenji Fuke, Keiko Tonai, Hiroaki Yoshida, Eiji Suzuki +3 more | 1999-08-03 |
| 5905930 | Image forming apparatus | Toshimasa Toyama, Toshio Hino, Masaaki Ohyama, Naoto Hirao, Yoshinori Wada +3 more | 1999-05-18 |
| 5887236 | Image forming apparatus | Naoto Hirao, Toshimasa Toyama, Masaaki Ohyama, Mituaki Ono, Kiyoshi Chinzei +1 more | 1999-03-23 |
| 5826134 | Electrophotographing apparatus having a toner empty discriminating unit | Toshio Hino | 1998-10-20 |
| 5754919 | Electrostatic recording apparatus utilizing superimposition of colors in a toner image to record a multicolor image | Katsumi Sugimoto, Keiko Tonai, Yoshinori Wada | 1998-05-19 |
| 5740501 | Photo-sensitive drum formed from extruded or drawn blank and image recording apparatus having same | Kenji Fuke | 1998-04-14 |
| 5640662 | Hot roller for thermal fixation device having elastomeric and anti-abrasive coverings | Katsumi Sugimoto, Keiko Tonai | 1997-06-17 |
| 5617192 | Multicolor electrostatic recording apparatus and electrostatic latent image recording apparatus used therefor | Kenji Fuke, Katsumi Sugimoto, Eiji Suzuki, Keiko Tonai, Shozo Tonai +4 more | 1997-04-01 |
| 5546170 | Printer with print density switching means | Hiroki Ohba, Kiyohisa Yanagita, Yoji Houki, Tomokazu Akuta, Akihiro Komuro | 1996-08-13 |
| 5508797 | Color image forming apparatus having toner image forming device | Keiko Tonai | 1996-04-16 |
| 5355200 | Printer with print density switching means | Hiroki Ohba, Kiyohisa Yanagita, Yoji Houki, Tomokazu Akuta, Akihiro Komuro | 1994-10-11 |
| 5164773 | Developing device used in electrophotographic field | Yukio Nishio, Hiroshi Kera, Kazunori Hirose | 1992-11-17 |
| 5159391 | Electrophotographic image recording apparatus with feed rollers for orientating a sheet upwardly at a transfer station | Makoto Koshi, Shizuo Takano, Masayuki Hida, Masao Konishi, Katsumi Tateno | 1992-10-27 |
| 5091749 | Toner content control apparatus | Masaru Iida | 1992-02-25 |
| 5066983 | Cleaning unit for cleaning recording medium of an electrophotographic apparatus | — | 1991-11-19 |
| 5036363 | Method of toner detection for replenishment in a developer | Masaru Iida, Akiyoshi Iwamasa | 1991-07-30 |
| 5021831 | Filter for removing smoke and toner dust used in electrophotographic/electrostatic recording apparatus | — | 1991-06-04 |
| 4984028 | Cleaning unit for cleaning recording medium of an electrophotographic apparatus | — | 1991-01-08 |
| 4938786 | Filter for removing smoke and toner dust in electrophotographic/electrostatic recording apparatus | — | 1990-07-03 |