Fixing device and image forming apparatus
US9042761B2 · kind B2 · utility
Assignee
Inventors
- Takeshi Uchitani
- Masahiko Satoh
- Masaaki Yoshikawa
- Kenji Ishii
- Tadashi Ogawa
- Takahiro Imada
- Hiromasa Takagi
- Hiroshi Yoshinaga
- Arinobu Yoshiura
- Teppei Kawata
- Takamasa Hase
- Hajime Gotoh
- Takuya Seshita
- Kazuya Saito
- Toshihiko Shimokawa
- Kensuke Yamaji
- Shuutaroh Yuasa
- Akira Suzuki
- Shinichi Namekata
- Ryota Yamashina
- Yasunori Ishigaya
Key dates
| Filing date | Feb 8, 2013 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Mar 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device capable of shifting to a sleep state includes a heat source; a rotatable fixing member that is partly heated by the heat source to heat an unfixed image carrying surface of a recording medium; a rotatable pressing member that is in pressure contact with the fixing member to form a nip portion between the pressing member and the fixing member; a rotation drive unit that directly or indirectly rotates the fixing member; a temperature detecting unit that detects a temperature of the fixing member; and a controller configured to prohibit the fixing device from shifting to the sleep state when the temperature of the fixing member in a region facing the heat source is equal to or more than a predetermined temperature T1 at a point when a predetermined time period t1 has elapsed from the stop of rotation drive of the rotation drive unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.