Fail-safe apparatus for image forming apparatus

Details Fail-safe apparatus for image forming apparatus Fail-safe apparatus for image forming apparatus

1989-08-28

1991-11-26

Beausoliel, Robert W.

Excavating

371 14, 371 62, G06F 1100

Patent

active

050688537

ABSTRACT:
A fail-safe apparatus for an image forming apparatus includes a central processing unit (CPU), a drive section or load, a disconnecting circuit, and a watchdog circuit. The CPU controls an image forming sequence. The drive section or load is controlled by the CPU through an input-output controller. The disconcerting circuit disconnects power supply to the drive section or load upon reception of a trigger signal. The watchdog circuit monitors an operation of the CPU so as to output a reset signal to the CPU and the input-output controller upon detection of an operation abnormality, and to output the trigger signal to the disconnecting circuit.

REFERENCES:
patent: 4488303 (1984-12-01), Abramovich
patent: 4499581 (1985-02-01), Miazga
patent: 4598355 (1986-07-01), Shepler
patent: 4644541 (1987-02-01), Linkowski
patent: 4745542 (1988-05-01), Baba
patent: 4812677 (1989-03-01), Perry
patent: 4835761 (1989-05-01), Sato
patent: 4868817 (1989-09-01), Shigihara

Affiliated with

Also associated with

Rating

Fail-safe apparatus for image forming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fail-safe apparatus for image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fail-safe apparatus for image forming apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2390066