Method and apparatus for scanning masters

Details Method and apparatus for scanning masters Method and apparatus for scanning masters

1983-05-24

1986-02-04

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358282, 356239, 250574, H04N 110

Patent

active

045689849

ABSTRACT:
A novel apparatus and method for point-to-point and line-by-line opto-electronic scanning of masters mounted on a transparent master carrier and wherein simultaneous opaque and transparency scanning is accomplished to generate opaque and transparency scanning signals for each point of the master with one of the scanning signals being the actual image signal and the other scanning signal being a recognition signal for those points of the master where amplitude errors in the image signal occur due to scattered light and/or shadowing. The disruptive amplitude errors are eliminated by combining the recognition signal with the actual image signal to obtain a substantially error-free signal.

REFERENCES:
patent: 3894178 (1975-07-01), Pugsley
patent: 3931464 (1976-01-01), Murase
patent: 4005926 (1977-02-01), Neale et al.
patent: 4133008 (1979-01-01), Tisue
patent: 4468120 (1984-08-01), Tanimoto et al.

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