Laser printing apparatus with device for combining a plurality of optical beams provided with an integral-order wave plate
US4760407A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 4, 1987 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Aug 4, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1261
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A laser printing apparatus having a device for combining optically a plurality of laser lights which combines a plurality of laser lights and in which integral-order wave plates are provided respectively on the optical paths formed between a polarizing prism making part of the combined laser lights branch and sources of emission of said laser lights in a plurality, so that the quantity of said branching lights can be adjusted, and having a mechanism which adjusts and controls a distance between dots of the aforesaid combined output laser beams formed on a photosensitive drum for a laser printer, on the basis of detection outputs of the aforesaid branching lights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.