Electrostatographic diagnostics system
CA 1054212 A · Owner: Xerox Corporation · Inventors: Place, George H. (Jr.); Michaels, Thomas B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an electrostatographic copying system where, common imaging surface is subjected to currents from several corona generators during copying, the actual output current of each corona generator is individually measured and, controlled, utilizing individual current measurement resistive paths between the low voltage sides of discrete power supply circuits provided for each corona generator and a common ground path from the imaging surface, and by individually feeding back the shield current of each corona generator in a feedback path separate from the current measurement path. A.C. lead feedback and switching and measurement circuitry are also disclosed. - 1 -
Read the whole patent
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 May 8, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 1996.
- 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.