Method and apparatus for interleaving raster scan lines in a multi-beam laser imaging device
US6037962A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1998 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | Apr 3, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/111
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser printer produces an image of raster scan lines exhibiting a pitch distance p. The printer includes a photoreceptor and n laser sources, where n.gtoreq.2. First and second sets of laser sources, in one embodiment, produce plural optical beams which, when imaged on the photoreceptor, are separated by pitch distance p in the direction of movement of the photoreceptor. The first set and second sets of laser sources are separated by a distance S.sub.PR =c(1+qr)p, where: c=number of laser sources in each set, q=an integer, and r=number of rows of laser sources in both the first and second sets. The optical beams are modulated with pixel value data in accordance with a correspondence of image scan lines and positions of the optical beams on the photoreceptor. The photoreceptor is moved by a distance (q.multidot.c.multidot.r)p between scans. In such manner, an interleaving of the scan lines is achieved, which allows substantial separation of laser diodes on a laser diode chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.