Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7844198 | Electrophotographic photoreceptor, photoreceptor supporting device, imaging device and process cartridge | Nobuo Kuwabara, Hiroyuki Nagashima, Shuji Tanaka, Hiroshi Ono, Masahiko Shakuto +3 more | 2010-11-30 |
| 7826786 | Image forming apparatus, lubricant applying device, transfer device, process cartridge, and toner | Takeo Suda, Shinichi Kawahara, Takatsugu Fujishiro, Tokuya Ojimi, Takeshi Tabuchi +15 more | 2010-11-02 |
| 7711308 | Cleaning device, process cartridge, and image forming apparatus | Yoshiki Hozumi, Takeshi Saitoh, Kazuhiko Watanabe, Keiji Okamoto | 2010-05-04 |
| 7680429 | Charging device including charging roller and cleaning roller | Muraishi Takaya, Hiromichi Ninomiya, Atsushi Sampe, Yoshiyuki Kimura, Hiroyuki Nagashima +9 more | 2010-03-16 |
| 7672635 | Method and apparatus for image forming and effectively applying lubricant to an image bearing member | Yoshiki Hozumi, Toshio Koike, Masanori Kawasumi, Yuji Arai, Tokuya Ojimi +5 more | 2010-03-02 |
| 7539451 | Image forming apparatus and toner | Masanori Kawasumi, Haruji Mizuishi, Tokuya Ojimi, Toshio Koike, Takeshi Shintani +8 more | 2009-05-26 |
| 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 |
| 7477862 | Charged device, cleaning device, process cartridge, toner, and image-forming device that uses these | Muraishi Takaya, Hiromichi Ninomiya, Atsushi Sampe, Yoshiyuki Kimura, Hiroyuki Nagashima +9 more | 2009-01-13 |
| 7430377 | Image forming apparatus and process cartridge having a detachable unit body having a lubricant applying unit and image carrier mounted thereon | Toshio Koike, Naohiro Kumagai, Masato Yanagida, Masanori Kawasumi, Takeshi Uchitani +8 more | 2008-09-30 |
| 7376380 | Image forming apparatus, process cartridge, and toner | Toshio Koike, Yoshiki Hozumi, Hiromichi Ninomiya | 2008-05-20 |
| 7373101 | Method and apparatus for image forming and effectively applying lubricant to an image bearing member | Yoshiki Hozumi, Toshio Koike, Masanori Kawasumi, Yuji Arai, Tokuya Ojimi +5 more | 2008-05-13 |
| 7333744 | Image forming apparatus that charges a photosensitive member by superimposing an alternate current bias voltage on a direct current bias voltage as the charge bias voltage | Eiji Shimojo, Haruji Mizuishi, Tokuya Ojimi, Masanori Kawasumi, Takuzi Yoneda +6 more | 2008-02-19 |
| 7313347 | Cleaning device, process cartridge, image forming apparatus and toner | Takeshi Shintani, Takuzi Yoneda, Takaaki Tawada, Tokuya Ojimi, Toshio Koike +12 more | 2007-12-25 |
| 7292816 | Method and apparatus for electrophotographic image forming capable of effectively removing residual toner, a cleaning mechanism used therein, a process cartridge including the cleaning mechanism used in the apparatus, and toner used in the apparatus | Tokuya Ojimi, Toshio Koike, Takaaki Tawada, Takeshi Shintani, Yuji Arai +4 more | 2007-11-06 |
| 7149465 | Cleaning unit, process cartridge, image forming apparatus, and toner | Masato Yanagida, Naohiro Kumagai, Takeshi Shintani, Takaaki Tawada, Yuji Arai +8 more | 2006-12-12 |
| 7027747 | Method of and apparatus for forming image using a Non-Contact Charger | Yukiko Iwasaki | 2006-04-11 |
| 6898383 | Image forming apparatus | Mayumi Ohori, Masaru Tanaka, Haruji Mizuishi, Hiroyuki Ohkaji, Kenzo Tatsumi +3 more | 2005-05-24 |
| 6873809 | Image forming apparatus and cleaning device therefor | Yukiko Iwasaki | 2005-03-29 |
| 6807390 | Image forming apparatus | Takeo Suda, Shinichi Kawahara, Masanori Kawasumi, Hiroshi Ono, Hiroshi Mizusawa | 2004-10-19 |
| 6757505 | Image forming apparatus and cleaning device therefor | Yukiko Iwasaki | 2004-06-29 |
| 6628912 | Charge roller for an image forming apparatus and method of producing the same | Takaya Muraishi, Takatsugu Fujishiro | 2003-09-30 |
| 6628903 | Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper | Mayumi Ohori, Masaru Tanaka, Haruji Mizuishi, Hiroyuki Ohkaji, Kenzo Tatsumi +3 more | 2003-09-30 |
| 6266501 | Image-forming apparatus having a seal for a developer and a method for detecting a removal of the seal | Haruji Mizuishi, Masaru Tanaka, Kenzo Tatsumi, Toshitaka Yamaguchi, Hideki Zemba +3 more | 2001-07-24 |
| 6160969 | Image forming apparatus with a voltage applying unit for image transfer | Kouji Ishigaki, Haruji Mizuishi, Masaru Tanaka, Hiroyuki Ohkaji, Kenzou Tatsumi +3 more | 2000-12-12 |
| 6148161 | Image forming apparatus with improved toner density control | Noriyuki Usui, Haruji Mizuishi, Mayumi Ohori, Masaru Tanaka, Kenzo Tatsumi +3 more | 2000-11-14 |