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Expired Canadian patentCanada

Printing system

CA 1107139 A · Owner: St. Regis Paper Company · Inventors: Arnold, Gary A.

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 of the Disclosure A printing system is disclosed wherein ink is emitted from a nozzle as entrained in a jet of air. The ink is introduced onto an ink wall from an ink passageway and a fluid passageway has an outlet directing air at an angle onto this ink wall to cause the ink to flow along the wall and form into ligaments and eventually part from that wall as droplets. The droplets part from the ink wall primarily at a tip wall which diverges out of the air stream. In a preferred embodiment there are two such ink walls and the two flows of ink droplets converge to form a single stream. A printing head contains a plurality such as seven such nozzles in a row and then relative …

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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 August 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 25, 1978
GrantedAugust 18, 1981
Term endedAugust 18, 1998
Patent numberCA 1107139 A
Classification (IPC)B41J2/02

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMay 25, 1978Patent grantedAug 18, 1981Term endedAug 18, 1998

Sources & verification

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