Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2006-10-10
2006-10-10
Pham, Hai (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S250000
Reexamination Certificate
active
07119824
ABSTRACT:
An object is to obtain a multi-beam optical scanning apparatus in which a displacement of an image location of each of light beams emitted from a plurality of light emitting portions is reduced, and which is suitably usable in a high-speed and high-image-quality application, and an image forming apparatus using the multi-beam optical scanning apparatus.A multi-beam optical scanning apparatus includes a light source unit1having plural light emitting portions disposed with being spaced from each other in a main-scanning direction, a first optical system2for changing conditions of plural divergent light beams emitted from the light source unit, a stop3for restricting widths of the plural light beams transmitted through the first optical system, a deflecting unit5for reflecting the plural light beams restricted by the stop, a second optical system6for forming images of the plural light beams reflected by the deflecting unit on a surface7to be scanned, and a detecting unit for detecting a writing start position synchronous signal for controlling a timing of a scanning start position on the surface to be scanned. The individual elements are designed so as to satisfy a predetermined condition.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Pham Hai
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