Scanning optical system for laser beam printers
US4715699A · kind A · utility
20Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1986 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Jan 28, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1228
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A scanning optical system such as a laser beam printer that comprising a semiconductor laser, a collimator lens that produces substantially parallel rays of light from the beam emitted from the semiconductor laser, a convex cylinder lens having a curvature within a cross section taken in the auxiliary scanning direction, a deflector, and a scanning lens that focuses the deflected rays to form a spot on a scanning surface. The normal direction of light emitting from the semiconductor laser being in alignment with the scanning direction of the scanning lens system, and the scanning lens system having an anamorphic configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.