laser printer

Abstract

Abstract PURPOSE:To attain color printing or the like of high quality by providing the titled device with a rotary hologram disk having plural diffraction grating groups with different space frequency levels and an f-theta lens in addition to the required numbers of laser light sources and photosensitive bodies and arranging these parts according to a prescribed positional relation. CONSTITUTION:Laser light sources 4-7 are arrayed in parallel in the plane of the rotary hologram disk 1 in its radius direction. Since the space frequency levels of laser beams 4a-7a made incident upon the diffraction gratings 2a-2d are different, the incident laser beams 4a-7a are diffracted with respectively different angles and projected as laser beams 4b-7b even if the incident angle is the same. An anamorphic f-theta lens is used for the f-theta lens 8 arranged in front of the hologram disk 1 to make the laser beams 4b-7b incident. The photosensitive bodies 9a-9d corresponding to respective laser light sources 4-7 are arranged on the image forming position of the f-theta lens 8 so as to be vertically positioned on the same plane.

Inventors

• 👤 Kyoji Komi
• 👤 小見　恭治

Bibliographic Details