Inner drum exposure apparatus

Details Inner drum exposure apparatus Inner drum exposure apparatus

2007-04-10

2007-04-10

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S201100, C359S212100, C359S222100, C359S226200, C359S490020, C347S224000

Reexamination Certificate

active

11313725

ABSTRACT:
An exposure process is executed by multi-beams divided by polarizing and combining laser beams (La, Lb) modulated based on an image signal so as to be emitted by a light source side optical system by using a polarized light beam splitter, and by converting the laser beams (La, Lb) emitted as right circular polarized light and left circular polarized light into mutually orthogonal linear polarized light by using a quarter wave plate arranged on a light path of a scanning portion, and thereafter transmitting through an optical element of uniaxial crystal. An appropriate image can be formed by setting a division width of beam spots on a scanning surface set by the optical element of uniaxial crystal such that scanning unevenness of an image formed on a scanning surface is within an allowable range even when changing resolution of the inner drum exposure apparatus.

REFERENCES:
patent: 5367399 (1994-11-01), Kramer
patent: 5481384 (1996-01-01), Kramer et al.
patent: A 5-27188 (1993-02-01), None

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