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Expired Canadian patentCanada

Paper loading system for use in a printer

CA 1254850 A · Owner: Sharp Kabushiki Kaisha · Inventors: Maezawa, Tokio; Furukawa, Koichi

CIPO record

Overview

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

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Abstract From the Canadian patent

Abstract:, The invention provides a paper loading system for use in a printer having a platen and a paper bail mounted with two rollers. A carriage having a projection is provided to move parallely to the platen. At the free end of the projection, a photodetector is provided to detect an edge of a loaded paper so as to memorize the opposite ends of the loaded paper. When the paper bail is in a pressing position at which rollers are holding the paper on a path of advance of the paper, no engagement is accomplished between the projection and the rollers. But when the paper bail is in a releasing position at which rollers are separated from the path to release the paper the, projection may …

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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 May 30, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 30, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 9, 1985
GrantedMay 30, 1989
Term endedMay 30, 2006
Patent numberCA 1254850 A
Classification (IPC)B41J13/00 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJuly 9, 1985Patent grantedMay 30, 1989Term endedMay 30, 2006

Sources & verification

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