Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2008-10-14
2010-11-02
Pham, Hai C (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S259000
Reexamination Certificate
active
07825947
ABSTRACT:
An optical scanning device in which an optical deflector scanningly deflects a light beam emitted from a light source and in which an imaging optical system images the scanningly deflected light beam onto a scan surface. The imaging optical system includes a transmission type imaging optical element and a reflection type optical element, which are disposed in this order from the optical deflector. The reflection type optical element reflects the scanningly deflected light beam in an off-normal light path towards the scan surface. To avoid interference with the off-normal path, a contour central line of the transmission type imaging optical element is positioned at one side of a principal ray of the light beam incident on the transmission type imaging optical element, which side is remote from the off-normal light path reflected by the reflection type optical element.
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European Search report dated Feb. 25, 2010, from corresponding European Application No. 08018089.6.
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Pham Hai C
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