Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7482104 | Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same | Maiko Kondo, Hidetoshi Kami, Naohiro Toda, Ryoichi Kitajima, Narihito Kojima +1 more | 2009-01-27 |
| 7386256 | Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same | Maiko Kondo, Hidetoshi Kami, Naohiro Toda, Ryoichi Kitajima, Narihito Kojima +1 more | 2008-06-10 |
| 7341814 | Electrophotographic photoconductor, preparation method thereof, electrophotographic apparatus and process cartridge | Hidetoshi Kami, Naohiro Toda, Yoshiaki Kawasaki, Maiko Kondo, Ryoichi Kitajima +1 more | 2008-03-11 |
| 7315722 | Image forming apparatus and image forming method | Ryoichi Kitajima, Hidetoshi Kami, Yoshiaki Kwasaki, Naohiro Toda, Maiko Kondoh | 2008-01-01 |
| 7177570 | Measurement of frictional resistance of photoconductor against belt in image forming apparatus, process cartridge, and image forming method | Hidetoshi Kami, Katsuichi Ohta | 2007-02-13 |
| 7153621 | Electrophotographic photoreceptor and image forming apparatus using the photoreceptor | Narihito Kojima, Ryuta Takeichi, Akiyo Namiki, Yohta Sakon | 2006-12-26 |
| 6879799 | Image-forming apparatus and image-forming process-cartridge | Shinji Nohsho, Hidetoshi Kami | 2005-04-12 |
| 6844124 | Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor | Hiroshi Ikuno, Hidetoshi Kami, Ryohichi Kitajima, Narihito Kojima, Akihiko Matsuyama +8 more | 2005-01-18 |
| 6706459 | Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same | Narihito Kojima, Ryuta Takeichi, Akiyo Nakajima, Yohta Sakon | 2004-03-16 |
| 6686114 | Electrophotographic image forming method and apparatus | Yohta Sakon, Narihito Kojima, Hiroshi Ikuno | 2004-02-03 |
| 6641964 | Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor | Hiroshi Ikuno, Hidetoshi Kami, Ryohichi Kitajima, Narihito Kojima, Akihiko Matsuyama +8 more | 2003-11-04 |
| 6562529 | Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same | Narihito Kojima, Ryuta Takeichi, Akiyo Nakajima, Yohta Sakon | 2003-05-13 |
| 6558862 | Electrophotographic photoreceptor and image forming apparatus using the photoreceptor | Narihito Kojima, Ryuta Takeichi, Akiyo Namiki, Yohta Sakon | 2003-05-06 |
| 6521386 | Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor | Yohta Sakon, Narihito Kojima, Minoru Umeda, Masao Yoshikawa, Ryuta Takeichi +1 more | 2003-02-18 |
| 6363237 | Unit for imparting lubricity to electrophotographic photoconductor, electrophotographic image formation apparatus including the unit, and image formation method using the apparatus | Narihito Kojima, Yohta Sakon, Ryuta Takeichi, Akiyo Nakajima | 2002-03-26 |
| 6160977 | Image forming apparatus and device for applying a lubricant to an image | Ryuta Takeichi, Akiyo Nakajima, Narihito Kojima, Yohta Sakon | 2000-12-12 |
| 6151468 | Electrophotographic photoconductor | Hidetoshi Kami, Tetsuro Suzuki, Narihito Kojima, Hiroshi Tamura, Yohta Sakon +1 more | 2000-11-21 |
| 6118964 | Multi-functional contact-type charging unit and image transfer unit | Narihito Kojima, Ryuta Takeichi, Yukiko Iwasaki, Akiyo Nakajima, Hiroyuki Fushimi | 2000-09-12 |
| 6060205 | Image forming apparatus | Ryuta Takeichi, Narihito Kojima, Yohta Sakon, Akiyo Nakajima | 2000-05-09 |
| 6030733 | Electrophotographic photoconductor with water vapor permeability | Hidetoshi Kami, Tetsuro Suzuki, Narihito Kojima, Hiroshi Tamura, Yohta Sakon +1 more | 2000-02-29 |
| 6014532 | Image forming apparatus | Ryuta Takeichi, Yukiko Iwasaki, Akiyo Nakajima, Narihito Kojima, Hiroyuki Fushimi | 2000-01-11 |
| 5871876 | Electrophotographic photoconductor | Hiroshi Ikuno, Tetsuro Suzuki, Hidetoshi Kami, Jun Aoto, Hiroshi Tamura +2 more | 1999-02-16 |
| 5870657 | Charging apparatus for photoconductor with ozone adsorption features | Narihito Kojima, Hiroshi Ikuno | 1999-02-09 |
| 5840455 | Electrophotographic photoconductor | Hiroshi Ikuno, Narihito Kojima | 1998-11-24 |
| 5656406 | Electrophotographic photoconductor with amorphous carbon overlayer | Hiroshi Ikuno, Narihito Kojima, Shunpei Yamazaki, Shigenori Hayashi | 1997-08-12 |