Laser thermal printer having a light source produced from combined beams
US5066962A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1989 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Dec 27, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/1135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thermal printer is disclosed which is particularly suitable for making slide transparencies. The printer includes a laser which provides the necessary energy to effect a transfer of dye from a donor element to a receiver element. In order to insure the transfer of dye from the donor at a suitable resolution and with sufficient speed, two relatively high-powered single transverse mode lasers are used. The beam from one of the lasers is passed through a half-wave plate, and the beam is then combined with the beam from the other laser by a polarization beam splitter. The combined beam is passed through suitable optics and is scanned onto the receiver element by a galvonometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.