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Expired Canadian patentCanada

Ink jet printing system with pedestal synchronization

CA 1071689 A · Owner: International Business Machines Corporation · Inventors: Carmichael, John M.; Lowy, John A.; Heard, Roderick S.

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

Abstract, An ink jet printing system is provided with synchronization facilities including charging, deflecting and gutter components and a, technique is described for referencing synchronizing pulses to a pedestal voltage level to insure that the ink drop stream clears the gutter during synchronization cycles.

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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 February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 12, 1980
Term endedFebruary 12, 1997
Patent numberCA 1071689 A
Classification (IPC)G01D15/16 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 12, 1980Term endedFeb 12, 1997

Sources & verification

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