Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6308020 | Printer and transfer charger | Yoshihiro Tonomoto | 2001-10-23 |
| 6212340 | Image forming apparatus utilizing a two-component developing apparatus with automatic toner replenishment and developer replacement | Katsumi Sugimoto, Keiko Tonai, Hiroaki Yoshida, Yoshihiro Tonomoto, Eiji Suzuki +3 more | 2001-04-03 |
| 6205303 | Automatic cleaning method for electrifier, and image forming apparatus | Daisuke Fujii, Kiyoshi Chinzei | 2001-03-20 |
| 6175715 | Double-sided printing apparatus | Naoto Hirao, Masaaki Ohyama, Katsuya Shimatsu | 2001-01-16 |
| 6091925 | Fixing unit with undirectional clutch mechanism and image forming apparatus with sealing member and agitating mechanism | Katsumi Sugimoto, Tomoaki Tanaka, Katsuya Shimatsu, Yasuhiro Wakabayashi, Katsumi Tateno +1 more | 2000-07-18 |
| 5987280 | Developing device for electrostatic latent image | Kunihiko Sato, Tsutomu Kawai, Eiji Suzuki, Shozo Tonai, Yoshihiro Tonomoto +3 more | 1999-11-16 |
| 5933690 | Toner recovery device | Katsumi Sugimoto, Keiko Tonai, Hiroaki Yoshida, Yoshihiro Tonomoto, Eiji Suzuki +3 more | 1999-08-03 |
| 5907758 | Electrostatic recording system using dielectric belt in which electrifying voltage is applied in stages prior to image transfer | Tomoaki Tanaka, Tsuneo Mizuno, Kazumi Kawabata, Hitoshi Yoshii, Teturou Nakashima +5 more | 1999-05-25 |
| 5740501 | Photo-sensitive drum formed from extruded or drawn blank and image recording apparatus having same | Yoshihiro Tonomoto | 1998-04-14 |
| 5617192 | Multicolor electrostatic recording apparatus and electrostatic latent image recording apparatus used therefor | Yoshihiro Tonomoto, Katsumi Sugimoto, Eiji Suzuki, Keiko Tonai, Shozo Tonai +4 more | 1997-04-01 |
| 5581338 | Toner image transferring device including transfer charger and AC charge eliminator crystal display device | Kiyoshi Nakamichi, Hideyuki Nanba, Yoshito Hukata | 1996-12-03 |
| 5396026 | Magnetic brush developing apparatus | Kunihiko Sato, Sachio Sasaki, Akira Nagahara, Shin Araki, Hideaki Iwasaki +2 more | 1995-03-07 |