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Expired Canadian patentCanada

Magnetic brush cleaning system

CA 1184591 A · Owner: Xerox Corporation · Inventors: Seanor, Donald A; Garsin, Paul A.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An electrophotographic printing machine which has a cleaning station for removing particles from a photoconductive surface. The cleaning station includes a magnetic transport for moving a cleaning material into contact with the photoconductive surface. The magnetic transport is electrically biased to a polarity and magnitude sufficient to attract the particles from the photoconductive surface to the cleaning material. An electrically non-conductive member positioned close-, ly adjacent to the magnetic transport is electrically, biased to the same polarity as the magnetic transport with the magnitude thereof being greater than the magnitude of the electrical bias applied to the magnetic …

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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 March 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 27, 1981
GrantedMarch 26, 1985
Term endedMarch 26, 2002
Patent numberCA 1184591 A
Classification (IPC)G03G21/00

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedFeb 27, 1981Patent grantedMarch 26, 1985Term endedMarch 26, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.