Image forming apparatus which monitors hardware errors of a cont

Details Image forming apparatus which monitors hardware errors of a cont Image forming apparatus which monitors hardware errors of a cont

1995-03-28

1997-06-17

Boudreau, Leo

Image analysis

Pattern recognition

382309, 399 9, 399366, G06K 900, G03G 2100

Patent

active

056404670

ABSTRACT:
A controller accurately discriminates a copying-inhibited document prepared by using paper on which a copying-inhibited pattern is printed or copied on the entire surface, executes the copying inhibition control, detects a hardware error, and executes the copying inhibition control upon detection of the hardware error by recognizing a copied document as a copying-inhibited document and executing copying inhibition control when a copying-inhibited document detected signal is inputted during an operation for reading a copied document from the copying-inhibited document discriminator, and also by determining that a hard error has occurred in the copying inhibition discriminating board, giving a warning through an operation displaying unit, and executing a copying inhibition control when a copying-inhibited document signal or a copying-inhibited document not-detected signal is inputted during a period other than that for reading a copied document.

REFERENCES:
patent: 5027288 (1991-06-01), Suzuki et al.
patent: 5309245 (1994-05-01), Hayashi et al.
patent: 5390003 (1995-02-01), Yamaguchi et al.
patent: 5424807 (1995-06-01), Ohmura
patent: 5426710 (1995-06-01), Suzuki et al.

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