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Self-diagnosis and self-repair system for image forming apparatus

  • US 5,239,547 A
  • Filed: 09/26/1990
  • Issued: 08/24/1993
  • Est. Priority Date: 09/21/1990
  • Status: Expired due to Fees
First Claim
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1. A self-repairing system for an image-forming apparatus which includes a plurality of interrelated elements, the interrelated elements including actuator elements which control operations carried out by the image-forming apparatus, and sensor means for sensing conditions in the image-forming apparatus and providing condition data indicative thereof, said self-repairing system comprising:

  • memory means including;

    a first memory for storing characteristic data representative of various characteristics of the image-forming apparatus, interrelationship knowledge representative of the interrelationships of the elements of the image-forming apparatus, and diagnostic knowledge,a second memory for storing repair case knowledge, anda third memory for storing repair work script knowledge;

    diagnostic means for determining whether the image-forming apparatus is in a normal or an abnormal condition based upon condition data from the sensor means, the characteristic data from the first memory and the diagnostic knowledge from the first memory; and

    a repair plan inference means, responsive to a determination by the diagnostic means that the image-forming apparatus is in an abnormal condition, for inferring a repair case from the repair case knowledge from the second memory and a work script from the work script knowledge from the third memory to provide a repair plan to select one of the actuator elements for influencing one of the operations in the image-forming apparatus.

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