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Expired Canadian patentCanada

Thermal transfer recording method

CA 1254795 A · Owner: Kabushiki Kaisha Toshiba · Inventors: Tsutsumi, Teruo

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

In a thermal transfer recording method of the type using a strip of repeatedly usable ink ribbon wound about an ink ribbon feeding roll, recording is effected by means of a line scanning type thermal head while recording paper and ink ribbon are transported forwardly in the superimposed state. At every time when recording has been achieved both the recording paper and the ink ribbon are released from the clamped state which is caused by means of a combination of platen roller and thermal head and thereafter the ink ribbon is transported backwardly by a distance shorter than the length of a single page. A short part of the ink ribbon transported backwardly on which recording has been …

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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.
FiledSeptember 11, 1985
GrantedMay 30, 1989
Term endedMay 30, 2006
Patent numberCA 1254795 A
Classification (IPC)B41M5/26 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedSep 11, 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.