Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8849142 | Image forming device | Hiroyuki Sugiyama, Jun Yura, Yukiko Iwasaki, Jun Shiori, Masaki Sukesako +3 more | 2014-09-30 |
| 8649692 | Toner replenishing device capable of effectively softening toner and image forming apparatus with toner replenishing device | Masaki Sukesako | 2014-02-11 |
| 7477856 | Method and apparatus for image forming capable of effectively preventing resonance of frequencies | Takuzi Yoneda, Hiroshi Ono, Masanori Kawasumi, Yuji Arai, Toshio Koike +5 more | 2009-01-13 |
| 7272354 | Cleaning unit and image forming apparatus having multiple cleaning blades | Eisaku Murakami, Masami Tomita, Masanori Kawasumi, Toshio Koike, Naohiro Kumagai +11 more | 2007-09-18 |
| 7266324 | Charging device, and process cartridge and image forming apparatus using the charging device | Masato Yanagida, Hiroyuki Nagashima, Naohiro Kumagai, Toshio Koike, Atsushi Sampe +5 more | 2007-09-04 |
| 7139504 | Charging device, and process cartridge and image forming apparatus using the charging device | Masato Yanagida, Hiroyuki Nagashima, Naohiro Kumagai, Toshio Koike, Atsushi Sampe +5 more | 2006-11-21 |
| 7110696 | Cleaning unit, process cartridge, and image forming apparatus | Eisaku Murakami, Masami Tomita, Masanori Kawasumi, Toshio Koike, Naohiro Kumagai +11 more | 2006-09-19 |
| 6873814 | Developing device using a two-ingredient type developer and image forming apparatus including the same | Fumihiro Sasaki, Hiroto Higuchi, Maiko Kondo, Toshio Koike, Atsushi Sampe +4 more | 2005-03-29 |
| 6856774 | Developing device including magnetic member provided on toner-scattering restraining device and image forming apparatus including the developing device | Atsushi Sampe, Takeyoshi Sekine, Masayuki Yamane, Junichi Sano, Toshio Koike +4 more | 2005-02-15 |
| 6687474 | Developing apparatus, image formation apparatus, and process cartridge | Masahiko Yamada, Kentaroh Matsumoto, Hiroyuki Nagashima | 2004-02-03 |
| 6507718 | Method and apparatus for reducing adhesion of carrier to image bearing member | Kentaroh Matsumoto | 2003-01-14 |
| 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 |