Image forming apparatus

Details Image forming apparatus Image forming apparatus

1985-02-04

1988-07-19

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14R, G03G 2100

Patent

active

047588608

ABSTRACT:
An image forming apparatus which uses process sequence control for forming images using several computers includes circuits for detecting abnormal conditions in either the computer hardware or program sequence. Instruction signals for image formation are entered through an input circuit. When abnormal conditions are detected, the input circuit is prevented from entering instruction signals to one computer and another computer interrupts the image formation process. This other computer transmits data comprising a signal for indicating a process cycle and a signal for indicating disabled image formation.

REFERENCES:
patent: 3960446 (1976-06-01), Ogawa et al.
patent: 4054380 (1977-10-01), Donohue et al.
patent: 4089602 (1978-05-01), Noguchi et al.
patent: 4090787 (1978-05-01), Hubbard et al.
patent: 4099860 (1978-07-01), Connin
patent: 4186299 (1980-01-01), Batchelor
patent: 4302098 (1981-11-01), Kan et al.

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