Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5223668 | Single component developing device with velocity of roller dependent on time constant of circuit formed by resistor layer of developer carrying member and photosensitive drum | Toshihiko Takaya, Kouji Sakamoto, Toshihiro Sugiyama | 1993-06-29 |