Image forming apparatus with controlled drive for accurately positioning developing sections of a rotary developing device
US5552877A · kind A · utility
33Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1995 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Apr 19, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0177
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus having a rotary developing device or revolver in which a plurality of developing sections are defined. The revolver is rotated over a target position by a first drive source, then returned by a second drive source producing a moment acting in the opposite direction, such as due to the drive of one of the developing sections, and then positively stopped by a positioning mechanism. The revolver is, therefore, accurately positioned at the target position without regard to, for example, irregularities in a motor for driving the revolver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.