Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689768 | Electrophotographing apparatus for collecting toner from a photosensitive member and conveying it to developing means | Koji Yamazaki, Tetsuya Karaki | 1997-11-18 |
| 5631727 | Image forming apparatus having discharging means using light source actuated prior to latent image formation | Koji Yamazaki, Shigenori Ueda, Hitoshi Murayama | 1997-05-20 |
| 5561021 | Electrophotographic photosensitive member having a metal oxide material layer with an improved water repellency formed on the surface of a light receiving layer | Koji Yamazaki, Shigenori Ueda, Hiroaki Niino, Masaya Kawada | 1996-10-01 |
| 5480750 | Electrophotographic process and electrophotographic apparatus | Masaya Kawada, Koji Yamazaki, Shigenori Ueda, Hiroaki Niino | 1996-01-02 |
| 5392098 | Electrophotographic apparatus with amorphous silicon-carbon photosensitive member driven relative to light source | Koji Yamazaki, Shigenori Ueda, Hitoshi Murayama | 1995-02-21 |
| 5358811 | Electrophotographic method using an amorphous silicon light receiving member with a latent image support layer and a developed image support layer and insulating toner having a volume average particle size of 4.5 to 9.0 micron | Koji Yamazaki, Toshimitsu Kariya, Tatsuyuki Aoike, Takehito Yoshino, Hirokazu Otoshi | 1994-10-25 |
| 5112709 | Red reproduction-improving electrophotographic image-forming method using an amorphous silicon photosensitive member having a surface layer composed of a hydrogenated amorphous silicon carbide | Koji Yamazaki, Shigenori Ueda | 1992-05-12 |
| 5087542 | Electrophotographic image-forming method wherein an amorphous silicon light receiving member with a latent image support layer and a developed image support layer and fine particle insulating toner are used | Koji Yamazaki, Toshimitsu Kariya, Tatsuyuki Aoike, Takehito Yoshino, Hirokazu Otoshi | 1992-02-11 |
| 4972233 | Apparatus and method for cleaning a photosensitive member with spherical magnetic particles | Koji Yamazaki, Shigenori Ueda | 1990-11-20 |
| 4952978 | Speed control of color development in electrophotographic process and apparatus | Shigenori Ueda, Koji Yamazaki, Nobuyuki Kume, Nobuo Nakazawa | 1990-08-28 |
| 4851865 | Electrophotographic apparatus | Shigenori Ueda, Koji Yamazaki | 1989-07-25 |
| 4794413 | Image recording apparatus | Koji Yamazaki, Shigenori Ueda, Yutaka Udagawa | 1988-12-27 |