Fixing apparatus with a ray transmitting device inside one roller
US6405013B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2001 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Feb 6, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2053
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The fixing apparatus fixes a toner image on a transfer material by applying heat and pressure onto the transfer material. It uses a roll-shaped rotary member for applying heat. The roll-shaped rotary member has a ray radiating device for radiating heat rays inside a cylindrical ray-transmitting base member. A cylindrical ray-transmitting elastic/insulating layer is on the base member and a heat ray absorbing layer is provided on the elastic/insulating layer. The difference between the heat ray absorbing ratio (%) per unit thickness (mm) in the base member and that in the ray-transmitting elastic/insulating layer is made not more than 20%. The fluctuations of thickness in the base member and the elastic/insulating layer are equal to, or not more than, 0.1 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.