Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5623716 | Process for image forming using a photosensitive member having an amorphous carbon layer as an outermost surface layer | Izumi Osawa, Seishi Ojima | 1997-04-22 |
| 5536610 | Photosensitive member having surface protective layer with specified optical properties | Seishi Ojima, Takeshi Kakutani, Toshiyuki Kobayashi, Isao Doi, Izumi Osawa | 1996-07-16 |
| 5504560 | Photosensitive member-protective shutter | Yasunari Kitagaki, Seishi Ojima, Izumi Osawa | 1996-04-02 |
| 5396317 | Magnetic particle-containing member for use in copying machine | Izumi Osawa, Isao Doi, Shuji Iino | 1995-03-07 |
| 5330873 | Production method of photosensitive member by eliminating outermost surface portion of photosensitive layer | Isao Doi, Shuji Iino, Izumi Osawa | 1994-07-19 |
| 5242773 | Photosensitive member having fine cracks in surface protective layer | Shuji Iino, Seishi Ojima, Isao Doi, Izumi Osawa | 1993-09-07 |
| 5242776 | Organic photosensitive member having fine irregularities on its surface | Isao Doi, Seishi Ojima, Shuji Iino, Izumi Osawa | 1993-09-07 |
| 5232799 | Organic photosensitive member comprising a binder resin and a solvent | Izumi Osawa, Shuji Iino, Isao Doi | 1993-08-03 |
| 5198317 | Organic photosensitive member comprising a charge transport layer with a binder resin and a solvent | Izumi Osawa, Shuji Iino, Isao Doi | 1993-03-30 |
| 5185629 | Image forming apparatus provided with a cooling arrangement and ozone filter | Shuji Iino | 1993-02-09 |
| 5155002 | Image forming method | Izumi Osawa, Seishi Ojima, Shuji Iino, Isao Doi | 1992-10-13 |
| 5139906 | Photosensitive medium with a protective layer of amorphous hydrocarbon having an absorption coefficient greater than 10,000 cm.sup.-1 | Isao Doi, Izumi Osawa, Shuji Iino | 1992-08-18 |
| 5138381 | Image forming apparatus equipped with separating pawl with specified surface roughness | Shuji Iino, Isao Doi, Izumi Osawa | 1992-08-11 |
| 5125644 | Separating device for sheet-like member including separating pawl coated with amorphous carbon layer | Shuji Iino, Isao Doi, Izumi Osawa | 1992-06-30 |
| 4994337 | Photosensitive member having an overcoat layer | Izumi Osawa, Isao Doi | 1991-02-19 |
| 4971880 | Developer containing halogenated amorphous carbon particles prepared by plasma-polymerization | Hideo Hotomi, Izumi Osawa, Isao Doi, Masanori Fujiwara, Shuji Iino | 1990-11-20 |
| 4965156 | Photosensitive member having an overcoat layer and process for manufacturing the same | Hideo Hotomi, Shuji Iino, Izumi Osawa, Masanori Fujiwara, Isao Doi | 1990-10-23 |
| 4939056 | Photosensitive member | Hideo Hotomi, Izumi Osawa, Hideaki Ueda | 1990-07-03 |
| 4933247 | Organic photosensitive member with non-directive upheave patterns on the surface of protective layer made of amorphous carbon | Izumi Osawa | 1990-06-12 |
| 4912007 | Image forming method using toner of pH 2.5-6.5 | Izumi Osawa | 1990-03-27 |
| 4902595 | Photosensitive member having an overcoat lyer and process for manufacturing the same | Izumi Osawa, Yumiko Takedomi, Masanori Fujiwara | 1990-02-20 |
| 4891291 | Photosensitive member having an amorphous carbon overcoat layer | Izumi Osawa, Masanori Fujiwara, Yumiko Takedomi | 1990-01-02 |
| 4891292 | Photosensitive member having an amorphous carbon overcoat layer | Izumi Osawa, Isao Doi, Masanori Fujiwara | 1990-01-02 |
| 4886724 | Photosensitive member having an overcoat layer and process for manufacturing the same | Izumi Osawa, Masanori Fujiwara, Isao Doi, Yumiko Takedomi | 1989-12-12 |
| 4882256 | Photosensitive member having an overcoat layer comprising amorphous carbon | Izumi Osawa, Syuji Iino, Hideo Hotomi, Isao Doi | 1989-11-21 |