Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7035560 | Image forming apparatus having charging member supplied with a plurality of alternating voltages and memory for storing information for selecting the voltages | Keiji Okano, Satoshi Sunahara | 2006-04-25 |
| 6882806 | Charging apparatus determining a peak-to-peak voltage to be applied to a charging member | Satoshi Sunahara, Keiji Okano | 2005-04-19 |
| 6272306 | Developing apparatus and image forming apparatus having first and second voltages applied to a developing satisfying predetermined relationships | Masanobu Saito, Keiji Okano, Gaku Konishi, Yasushi Shimizu, Hiroshi Satoh +1 more | 2001-08-07 |
| 6167212 | Development density adjusting method for image forming apparatus | Hiroshi Satoh, Keiji Okano, Masanobu Saito, Gaku Konishi, Yasushi Shimizu +1 more | 2000-12-26 |