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Expired Canadian patentCanada

Platen for use in thermal printer

CA 1278722 C · Owner: Hirata, Sayoko · Inventors: Yamasaki, Satoru; Tanaka, Masayuki; Nomura, Kenji

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

A platen for use in a thermal printer of a type designed to effect printing with the use of at least one thermal print head for printing on a recording medium positioned between the platen and the thermal print head which platen comprises a generally elongated elastic body having an exterior surface adapted to be brought into contact with the heating elements of the thermal print head assembly with at least the recording medium intervening therebetween and a layer of porous material lined on the exterior surface of the elastic body and having a hardness greater than that of the elastic body and also having a thermal conductivity lower than that of the elastic body. The thermal conductivity …

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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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 27, 1987
GrantedJanuary 8, 1991
Term endedJanuary 8, 2008
Patent numberCA 1278722 C
Classification (IPC)B41J11/05 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedOct 27, 1987Patent grantedJan 8, 1991Term endedJan 8, 2008

Sources & verification

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