| 摘要 |
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.
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