Self-diagnosis and repair system for image forming apparatus
CA 2051963 A1 · Owner: Mita Industrial Co. Ltd. · Inventors: Shimomura, Yoshiki; Kusumoto, Hiroshi; Tomiyama, Tetsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This system according to the invention has plurality of sensors 1a, 1b and 1c, a system control circuit 10 and plurality of actuators 6a 6b and 6c. In, response to an application of state data from the sensors 1a, 1b or 1c, the state data is compared with characteristic data in the system control circuit 10. Consequently it is judged that a fault is caused, depending on whether the state data is relatively lower or higher. If a fault is caused, inference of the fault caused is drawn on the basis of a comparison between qualitative data and fault diagnosis knowledge which are stored in the system control circuit 10. Then it is, judged which of elements of a image forming apparatus is …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 20, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.