Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2006-10-31
2009-11-17
Phan, James (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S216100, C347S242000
Reexamination Certificate
active
07619799
ABSTRACT:
In an exposure unit including: a laser scanning unit emitting a multiple number of beams; a polygon mirror for deflecting the multiple beams by reflection with the same facet; an optical system including optical elements for leading the beams correspondingly to a multiple number of photoreceptor drums laid out along an auxiliary scan direction, the bottom of a casing of the exposure unit to which the polygon mirror and the optical elements arranged along the directions of the beams emitted from the polygon mirror are attached is constructed so that the attachment portions of individual optical elements for each beam are differentiated in thickness from the areas where no attachment portion is formed.
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Ueda Atsushi
Wada Takasumi
Phan James
Renner , Otto, Boisselle & Sklar, LLP
Sharp Kabushiki Kaisha
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