Image forming apparatus capable of making self-diagnosis

Details Image forming apparatus capable of making self-diagnosis Image forming apparatus capable of making self-diagnosis

1993-03-19

1994-05-31

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355208, 371 151, 395904, 395912, G03G 1500

Patent

active

053173686

ABSTRACT:
According to the present invention, a self-diagnosis system for an image forming apparatus can make accurate fault diagnosis and is made smaller in size and higher in speed. For that purpose, a fault temporarily developed by the image forming apparatus is limited to a single fault assumption, all states which can exist on the image forming apparatus when the image forming apparatus develops the fault are previously simulated, and the results of the qualitative simulation are stored as a plurality of virtual cases in a virtual case storing portion 12. When the image forming apparatus is operated, detected values of sensors X, Vs and Ds are converted into fuzzy qualitative values, respectively, on the basis of membership functions stored in a membership function generating portion 13. The fuzzy qualitative values are compared with the virtual cases stored in the virtual case storing portion 12, to reason the cause of the fault. Accordingly, any of the virtual cases stored in the virtual case storing portion 12 is selected using the fuzzy qualitative values, thereby to make it possible to accurately specify the fault in a short time.

REFERENCES:
patent: 5127005 (1992-06-01), Oda et al.
patent: 5166934 (1992-11-01), Tomiyama et al.
patent: 5175585 (1992-12-01), Matsubayashi et al.
patent: 5239547 (1993-08-01), Tomiyama et al.

Affiliated with

Also associated with

Rating

Image forming apparatus capable of making self-diagnosis does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image forming apparatus capable of making self-diagnosis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus capable of making self-diagnosis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1631084