Fixing device and image forming apparatus to adjust rotational speed of rotator due to thermal expansion
US10162294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2017 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | May 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device includes an endless belt, a drive rotator, a driven rotator, a rotation detector, and circuitry. The drive rotator contacts and rotates the endless belt. The driven rotator contacts an inner circumferential surface of the endless belt. The rotation detector detects a rotational speed of the driven rotator. The circuitry is operatively connected to the rotation detector to control a rotational speed of the drive rotator based on the rotational speed of the driven rotator detected by the rotational detector. The circuitry changes the rotational speed of the drive rotator when a recording medium bearing a toner image is not conveyed over the endless belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.