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Expired Canadian patentCanada

Method and apparatus for acoustically synchronizing drop formation in an ink jet array

CA 1098159 A · Owner: International Business Machines Corporation · Inventors: Lane, Ramon; Taub, Howard H.

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Abstract From the Canadian patent

Abstract of the Disclosure An ink jet synchronization scheme, wherein the drop formation of respective streams in an ink jet array are synchronized acoustically by individual acoustic fiber inputs to each of the streams. The acoustic fibers are attached to grooves adjacent each of the nozzles, with acoustic isolation being provided between the fiber and the nozzle substrate to prevent direct excitation of the substrate. This prevents the occurrence of resonance within the nozzle plate. Alternatively acoustic, isolation is achieved by mounting the synchronization structure separate from the nozzle plate. For example the acoustic, fibers are attached to the charge electrode structure or are, …

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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 March 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 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.
FiledOctober 3, 1977
GrantedMarch 24, 1981
Term endedMarch 24, 1998
Patent numberCA 1098159 A
Classification (IPC)G01D15/16 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedOct 3, 1977Patent grantedMarch 24, 1981Term endedMarch 24, 1998

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