Laser printer having an apodizine mask
US4982206A · kind A · utility
17Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Jan 3, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/502
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser printer is disclosed which is adapted to be used for color imaging. The printer comprises three diode lasers, each of which emits at a different wavelength. Each laser beam is passed through an apodizing mask to trim the final spot size. The beams from the three lasers are combined by the use of dichroic mirrors to form one combined beam. The combined beam is shaped by two spherical mirrors and is scanned onto a receiving medium by a polygon. The receiving medium is sensitive to the infrared, and the diode lasers are selected to obtain the widest possible spectral separation in the light beams from the lasers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.