Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666604 | Image forming apparatus with charging device having projecting zip discharge electrode and improved parameters | Yasuhiro Nakagami, Kouji Matsushita | 1997-09-09 |
| 5596391 | Image forming apparatus having transfer constant current source adjustable in response to the thickness of dielectric layer | Kouji Matsushita, Yasuhiro Nakagami | 1997-01-21 |