Electrophotography – Image formation – Exposure
Reexamination Certificate
2007-06-06
2010-06-08
Grainger, Quana M (Department: 2852)
Electrophotography
Image formation
Exposure
Reexamination Certificate
active
07734224
ABSTRACT:
An image reading apparatus includes a first running device that moves to scan a document at a predetermined speed, which includes an illumination unit and a first mirror; a second running device that moves in the scanning direction parallel to the first running device with half the predetermined speed of the first running device, which includes second and third mirrors; an imaging lens to produce an reduced image; and a line sensor to convert the reduced image to an electrical signal. At least one of the second and third mirrors is comprised of a spherical surface and a curvature radius of the spherical surface of such mirror is such that a distance deviation between the imaging lens and an imaging surface remains within usable range for actual operation regardless of movements of the first and second running devices.
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Dickstein & Shapiro LLP
Grainger Quana M
Ricoh & Company, Ltd.
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