Image processing apparatus having means for detecting non-visibl

Details Image processing apparatus having means for detecting non-visibl Image processing apparatus having means for detecting non-visibl

1993-10-21

1996-01-02

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

250556, G03G 2104

Patent

active

054813344

ABSTRACT:
A specified original that is not supposed to be copied is marked with a pattern that is formed by infrared reflected light. A copying apparatus includes a detecting unit for detecting the pattern and determines that an original is the specified original in accordance with the detection by the detecting unit. A copying operation is controlled in accordance with the determination of whether the original is the specified original that is not supposed to be copied.

REFERENCES:
patent: 4047033 (1977-09-01), Malmberg et al.
patent: 4524276 (1985-06-01), Ohtombo
patent: 4739377 (1988-04-01), Allen
patent: 5140411 (1992-08-01), Haneda et al.

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