Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1984-01-27
1985-10-15
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358293, 358294, 250237R, H04N 104, H04N 110
Patent
active
045478139
ABSTRACT:
Disclosed is a linear strip mask for controlling image plane light level distribution in line scan optical imaging systems. The mask is fabricated photographically on a strip of emulsion coated mylar. The photographic image which is recorded on the mylar strip is a pattern of alternating black and clear sections, the pattern of black sections chosen to modify the non-uniform light pattern output by the system's illumination source to obtain uniform image plane illumination. Also disclosed is a line scan optical imaging system utilizing strip masks to compensate for the non-uniform light output along the length of two fluorescent tubes which illuminate the document scan line and the cos.sup.4 drop-off of the imaging system's lens. Light reflected off the document scan line is transmitted via a four bounce folded mirror system and is received by the lens system. Behind the lens system is positioned a multielement photoelectric sensor for converting light reflected from each unit area of the document line being scanned into electrical signals.
REFERENCES:
patent: 4149197 (1979-04-01), Kos et al.
patent: 4220978 (1980-09-01), Phyins et al.
patent: 4290086 (1981-09-01), Spencer et al.
patent: 4305100 (1981-12-01), Hattori
patent: 4321630 (1982-03-01), Kramer
patent: 4432044 (1984-02-01), Lautzenheiser
patent: 4446364 (1984-05-01), Hayashi et al.
patent: 4464681 (1984-08-01), Jacobs et al.
Christian David E.
Gazzero Robert
McGraw Cobern E.
Britton Howard W.
Burroughs Corporation
Peng John K.
Peterson Kevin R.
Starr Mark T.
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