Copying machine control apparatus
CA 1325237 C · Owner: Fukuyama, Norio · Inventors: Maeno, Satoru; Ohishi, Tetsuo; Fukuyama, Norio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A copying machine control apparatus which includes a first control means for actuating a first driving means which operates a photoconductive drum, a second control means for actuating a second driving means which operates a scanning means, and a third control means for actuating a third driving means which operates a transfer drum. Each of first, second, and third control means has a position controller and a speed controller, respectively operated by, a common reference pulse train in which the position, controller generates a position control signal to indicate the turning position difference at any moment and the, speed controller generates a speed control signal which is composed of a …
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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
- Granted December 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 2010.
- 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.