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Expired Canadian patentCanada

Non-image erase system for reproduction machine

CA 1213315 A · Owner: Xerox Corporation · Inventors: Palumbo, Stephen A.J.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A xerographic type reproduction machine having a photoreceptor a, platen for supporting a document to be copied an exposure lamp, and optical, means for transmitting image rays from the platen and the document thereon to the photoreceptor to create a latent electrostatic image of the document on the photoreceptor; an edge erase lamp means forming a fiber optic type, conduit for transmitting a band of light from the erase lamp onto the photoreceptor to erase any non-image areas adjoining the edge of the latent image, a movable shutter when disposed in a home position closes the fiber optic conduit and prevent exposure of the photoreceptor to the erase lamp whereby to obviate possible …

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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 October 28, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 12, 1984
GrantedOctober 28, 1986
Term endedOctober 28, 2003
Patent numberCA 1213315 A
Classification (IPC)G03G15/00 +1 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedJune 12, 1984Patent grantedOct 28, 1986Term endedOct 28, 2003

Sources & verification

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