Optical scanning device

Details Optical scanning device Optical scanning device

1997-03-26

1999-08-03

Tran, Phuoc

Facsimile and static presentation processing

Facsimile

Picture signal generator

358494, H04N 104

Patent

active

059332506

ABSTRACT:
Light beams emitted by a plurality of light sources 1 and 2 are synthesized so as to travel along a common optical path P. The synthesized light beams are deflected by a polygonal rotating mirror 4 and converged. The converged light beams fall on a beam splitting mirror 6. One of the light beams is projected on the image forming surface of a photosensitive member 7 for image writing. Another light beam scans the image surface of a document 8, and light scattered and reflected from the image surface of the document is detected by five photoelectric conversion devices 31-35. Two of the outputs from the photoelectric conversion device 31-35 are inputted to an adding circuit 11 where the inputted outputs are added together. The output from the adding circuit 11 is inputted to the CPU 14 as image information of the signal.

REFERENCES:
patent: 4831247 (1989-05-01), Ishizaka
patent: 4962431 (1990-10-01), Imakawa et al.
patent: 5543955 (1996-08-01), Yamazaki et al.
patent: 5596424 (1997-01-01), Iizuka et al.

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