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US 6,208,371 B1Granted
Laser beam image recording apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorsIchirou Miyagawa, Takeshi Kiso, Takaaki Kosuge, Hiroshi Sunagawa
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Abstract
A laser beam emitted by a semiconductor laser is applied through a beam shaper optical system to a recording film to produce the image of a near field pattern of the laser beam which is of a narrow width in a main scanning direction of the recording film and which has a wide, substantially rectangular intensity distribution in an auxiliary scanning direction. The image recorded on the recording film is free of image density irregularities in the auxiliary scanning direction.
Claims11
A laser beam image recording apparatus comprising:
- a transverse multimode semiconductor laser which emits a laser beam;
- and
- a beam shaper optical system which shapes the laser beam emitted by said transverse multimode semiconductor laser and applies the shaped laser beam to a recording medium;
- said transverse multimode semiconductor laser and said beam shaper optical system being arranged such that the recording medium is scanned in a main scanning direction by said laser beam which has a substantially rectangular intensity distribution in an auxiliary scanning direction transverse to said main scanning direction, to thereby record an area-modulated image on said recording medium.
1 more element
Dependencies are inferred from the claim text.