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Expired Canadian patentCanada

Film inking unit for a rotary printing machine

CA 1312775 C · Owner: Heidelberger Druckmashinen Aktiengesellschaft · Inventors: Junghans, Rudi

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

The film inking unit for a rotary printing machine consists of a slowly rotating ink fountain roller (2) and a film roller (3) rotating fast compared to said ink fountain roller both rollers, forming a gap (4) of pre-determined width therebetween in which, before the inking unit rollers (5) as seen in direction of, rotation, an additional intermediate roller (9) which takes ink, from the film roller (3) and a doctor blade (11) for completely squeegeeing the ink film are assigend to the film roller (3) transferring the ink film onto fast-running inking unit rollers (5) (Fig. 1).

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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 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 16, 1988
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312775 C
Classification (IPC)B41L27/12 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 16, 1988Patent grantedJan 19, 1993Term endedJan 19, 2010

Sources & verification

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