Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11493874 | Image forming apparatus for printing using toner | — | 2022-11-08 |
| 11402764 | Toner detecting device | — | 2022-08-02 |
| 10281857 | Fixing device and image forming apparatus | — | 2019-05-07 |
| 10241157 | Differential transformer-based permeability sensor that detects magnetic substance | — | 2019-03-26 |
| 9709920 | Sensor, method of detecting magnetic substance, and image forming apparatus | — | 2017-07-18 |
| 9671735 | Differential transformer magnetic permeability sensor | — | 2017-06-06 |
| 9632453 | Differential transformer magnetic permeability sensor | — | 2017-04-25 |
| 9234945 | Differential transformer type magnetic sensor and image forming apparatus | — | 2016-01-12 |
| 9014583 | Image forming apparatus for deciding a magnetic toner amount on the basis of an output value and a standard value | — | 2015-04-21 |
| 8994367 | Differential transformer type magnetic sensor | — | 2015-03-31 |
| 5893659 | Image forming apparatus with transfer current controller and method of forming an image using the same | Yuzuru Nanjo, Ryuji Wataki, Shigeo Fujita | 1999-04-13 |
| 5746505 | Electrical conductor for an optical system | Junichi Hirobe, Ikuo Makie, Tsutomu Sugaya, Hiroyuki Sadamori | 1998-05-05 |
| 5634174 | Developer apparatus having toner concentration control | Shingo Mori, Takashi Nagashima, Hiroyuki Hamakawa, Kiyoaki Miyamoto | 1997-05-27 |
| 5600406 | Fixing temperature control device | Satoshi Ishii, Hiroyuki Sadamori, Tsutomu Sugaya, Junichi Hirobe | 1997-02-04 |
| 5438390 | Image forming apparatus having monocoque housing structure including unitary toner collecting vessel | Masahiko Kobayashi, Masakatsu Akashi, Junichi Hirobe, Tsutomu Sugaya, Yoshihisa Tanaka +4 more | 1995-08-01 |
| 5400119 | Image forming apparatus | Toshiaki Kusuda, Ikuo Makie, Yoshihisa Tanaka, Satoshi Ishii | 1995-03-21 |
| 4926214 | Original-holding cover | Mitsuo Nomura | 1990-05-15 |
| 4873549 | Device for detecting the life of an image forming process unit, opening of a seal of the unit and attachment of the unit to an image forming apparatus | Tomio Tada, Junichi Hirobe, Junichi Takamatsu, Kazuto Hori | 1989-10-10 |