Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2007-05-08
2007-05-08
Pham, Hai (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S258000
Reexamination Certificate
active
09678611
ABSTRACT:
A scanning optical system condensing a beam deflected by an optical deflector so as to form a beam spot on a surface to be scanned, comprises two lenses. A lens on the side of optical deflector has a negative refracting power in sub-scanning direction. A lens on the side of surface to be scanned has a positive refracting power in the sub-scanning direction. At least one lens surface of the lens surfaces of the two lenses is such that a shape in a sub-scanning section thereof is a non-arc shape.
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Aoki Magane
Atsuumi Hiromichi
Sakai Kohji
Suzuki Seizo
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Pham Hai
Ricoh & Company, Ltd.
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