Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668141 | Image forming apparatus, cartridge, image forming system, and a memory device for determining the amount of developer in a developer containing portion | Hideki Matsumoto | 2003-12-23 |
| 6643484 | Image forming apparatus including image bearing member rotatable at different peripheral velocities | Tetsuya Kobayashi, Yasuyuki Ishii | 2003-11-04 |