Electrophotography – Document handling – Original
Reexamination Certificate
2007-04-24
2007-04-24
Yan, Ren (Department: 2854)
Electrophotography
Document handling
Original
C399S379000, C358S448000, C358S488000, C358S497000
Reexamination Certificate
active
10992738
ABSTRACT:
An original document reading apparatus includes a plurality of point light source elements (e.g. a LED array) in a main scanning direction beneath an original document table, a moving device that moves the point light source elements in a sub scanning direction, and a photo acceptance unit that accepts light reflected from the original document and determines a size of the original document based upon a reaction of a pixel to the light. The plurality of point light source elements are divided into a plurality of blocks to be turned on and off in successive turns per a block starting from a block corresponding to an original document minimum size to a block corresponding to an original document maximum size.
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Kohchi Masashi
Sakurai Yasuo
Ghatt Dave A.
Yan Ren
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