Image forming apparatus comprising a developer roller
US7466943B2 · kind B2 · utility
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1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2006 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Oct 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0806
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control part 33 rotates a developer roller 21a at a second rotation speed, which is slower than a normal rotation speed during an image formation period (first rotation speed), during a non-image formation period while a heater 14 is in use. This prevents deformation of the developer roller 21a caused by radiant heat from a photoconductive drum 41, effectively prevents the appearance of image fogging, concentration unevenness, and the like, and also suppresses toner deterioration in a development unit 21.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.