Patent ID: 6803940
Filing Date: 2004-10-12
Classification: G02B,H04N

Abstract:
A photographic printer comprising:a laser beam scanner including: a first laser light source for oscillating and emitting a red laser beam; a second laser light source for oscillating and emitting a green laser beam; a third laser light source for oscillating and emitting a blue laser beam; a conveyor for linearly conveying a photographic paper to a predetermined scanning plane of the laser beam scanner at a predetermined constant speed; an optical scanning system for scanning the laser beams on the predetermined scanning plane coinciding with a surface of the photographic paper when being conveyed thereto; an optical path adjusting system for adjusting optical paths of the optical scanning system, including: a position sensor disposed on a plane optically conjugated with a plane corresponding to the photographic paper at the predetermined scanning plane; a first adjuster for adjusting an optical path of the first laser beam; a second adjuster for adjusting an optical path of the second laser beam; a third adjuster for adjusting an optical path of the third laser beam, whereby all the positions of the laser beams can be adjusted to overlap at a certain point on the predetermined scanning plane.