Dual polygon laser printhead for a color printer
US6774923B2 · kind B2 · utility
0Cited by
34References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Aug 3, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0404
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system particularly useful for color laser printers. Four imaging systems are provided, one for each color, black, magenta, cyan and yellow. Each imaging system has separate pre-scan and post-scan optical assemblies. Two scanning polygons are provided, and each scanning polygon is shared by two imaging systems. Both pre-scan optical assemblies shared by each scanning polygon are provided on the same side of the scanning assembly at substantially similar mirror image angles, to reduce scan image registration errors. The pre-scan and post-scan optical assemblies have improved adjustability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.