Image forming apparatus
US8004735B2 · kind B2 · utility
1Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2009 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Oct 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/121
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polygon scanner including a polygon mirror, a bearing, a polygon motor, and a scanner board is mounted in an optical housing. A scanner-unit attachment portion to which the polygon scanner is attached is formed as a convex portion protruded from a bottom plate of the optical housing such that at least a planar shape of the polygon mirror is surrounded by the convex portion. The scanner board makes a tight contact with an upper surface of the convex portion in direct contact with each other, so that a bottom of the polygon scanner is covered by the convex portion and the bottom plate of the optical housing in a sealed manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.