Fixing device having a pressing mechanism that presses first and second rotatable members together
US10241455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2018 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Jun 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2064
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device includes first and second rotatable members that form a nip for fixing a toner image on a recording material, and a pressing mechanism that presses one of the first and second rotatable members toward the other. A pressure P1 at a first position, in an upstream side of a center of a recording material feeding direction, and which is a maximum pressure in the nip, an average pressure P0 from the first position to a second position, which is a downstream end of the nip in the recording material feeding direction, a toner melt viscosity M1 at the first position, and a toner melt viscosity M2 at the second position, satisfy: 0.3 MPa≤P1≤0.6 MPa, 0<P0≤0.25 MPa, 1.0×104 Pa·s≤M1<1.0×105 Pa·s, and 0.5×102 Pa·s≤M2≤1.0×103 Pa·s.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.