Scanning optical system for laser beam printers

Details Scanning optical system for laser beam printers Scanning optical system for laser beam printers

1986-01-28

1987-12-29

Corbin, John K.

G02B 2608

Patent

active

047156996

ABSTRACT:
A scanning optical system such as a laser beam printer that comprising a semiconductor laser, a collimator lens that produces substantially parallel rays of light from the beam emitted from the semiconductor laser, a convex cylinder lens having a curvature within a cross section taken in the auxiliary scanning direction, a deflector, and a scanning lens that focuses the deflected rays to form a spot on a scanning surface. The normal direction of light emitting from the semiconductor laser being in alignment with the scanning direction of the scanning lens system, and the scanning lens system having an anamorphic configuration.

REFERENCES:
patent: 4277128 (1981-07-01), Kawamura
patent: 4318583 (1982-03-01), Goshima et al.
patent: 4523801 (1985-06-01), Baba et al.
patent: 4565421 (1986-01-01), Minoura

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