Method for assembling drum drive unit capable of reducing drum rotational speed fluctuations and image formation apparatus containing a drum drive unit
US7684734B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Apr 27, 2007 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Mar 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a tandem type image formation apparatus, a drum drive unit which always simultaneously drives respective photoreceptor drums, is assembled such that it is possible to synchronize cycles of rotational speed fluctuations of the respective photoreceptor drums in assembling. In this manner, the photoreceptor drums rotate so as to synchronize the cycles of rotational speed fluctuations of the photoreceptor drums even after assembling. Therefore, a phase difference in the cycles of rotational speed fluctuations of the photoreceptor drums is determined, and the photoreceptor drums are assembled so as to be shifted by the phase difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.