Fixing apparatus having film, heater, and shielding member having a cutout and movable between a first position and a second position so that radiant light emitted through the cutout heats the film
US9817343B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2015 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Dec 3, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The fixing apparatus includes a cylindrical film, a nip portion forming member in contact with the film, a pressure member that forms the nip portion with the nip portion forming member through the film, a heater configured to heat the film by emitting a radiant light, the heater being arranged in a hollow portion of the film, a first shielding member arranged between the nip portion forming member and the heater, and a second shielding member movable between a first position in which the second shielding member is positioned in a region between the first shielding member and the nip portion forming member, and a second position in which the second shielding member is positioned in a region, where the nip portion forming member does not exist, between the heater and the film. The second shielding member has a slit through which the radiant light passes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.