| 摘要 |
<p>PURPOSE:To conserve power to be modulated and to reduce cost by eliminating the necessity using a complicated modulation circuit by providing a laser beam generating means, a beam synthesizing means synthesizing laser beams and a scanning optical system scanning a thermal recording material by synthesized laser beam. CONSTITUTION:The laser beams emitted from the generation part of a laser beam generator 12 are inputted to a hologram element 40 being a beam synthesizing means through collimator lenses 38a-38d, 42a, 42b. The hologram element 40 synthesizes respective laser beams to form one laser beam L. A control part 32 drives the beam emitting part of the laser beam generator 12 through a driver 31. Beam emitting parts provided with laser diodes are modulated through the control part 32 to output laser beams moduated corresponding to the gradation of the image recorded on a thermal recording material S.</p> |
