Imaging using collectively controlled multiple beams
US4796265A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1987 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Apr 6, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system includes a plurality of semiconductor lasers for emitting a plurality of laser beams for use in forming an image on a photosensitive member. A laser driver circuit is provided for each of the plurality of lasers, and a plurality of photodectors are also provided, each detecting the light intensity of the corresponding one of the laser beams emitted from the lasers. A light intensity stabilizing control circuit is provided to stabilize the light intensity of each of the plurality of laser beams using one of the detected light intensities as a reference and adjusting the light intensity of each of the other beams such that a difference between the reference and the light intensity of each of the other beams is within a predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.