Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6615010 | Electrifier for charging developer carrying member using charge particles, including charge rotary member and nip forming member having bias polarity the same as developer polarity | Jun Hirabayashi, Yasunori Chigono | 2003-09-02 |
| 6580889 | IMAGE FORMING APPARATUS HAVING A MEMBER TO BE CHARGED, INJECTION CHARGING MEANS HAVING AN ELASTIC MEMBER FOR PRESS-CONTACTING THE MEMBER TO BE CHARGED, AND ELECTROCONDUCTIVE PARTICLES BETWEEN THE ELASTIC MEMBER AND THE MEMBER TO BE CHARGED | Yukio Nagase, Yasunori Chigono, Jun Hirabayashi | 2003-06-17 |
| 6553199 | Charging device, process cartridge and image forming apparatus | Yasunori Chigono, Jun Hirabayashi | 2003-04-22 |
| 6549742 | Charging apparatus employing charging particles, and image forming apparatus employing such a charging apparatus | Yasunori Chigono, Jun Hirabayashi, Norio Takahashi | 2003-04-15 |
| 6519433 | Image forming apparatus in which electroconductive particles are supplied to charging means from developing device by way of image bearing member | Jun Hirabayashi, Yasunori Chigono | 2003-02-11 |