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Expired Canadian patentCanada

Printing head of wire-dot impact printer

CA 1331313 C · Owner: Fujitsu Limited · Inventors: Yano, Akio

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

A printing head includes a plurality of printing members constituting a dot matrix, and a plurality of actuators for driving the printing members respectively. Each of the actuators comprises a resiliently movable member having one end to which the printing member is connected and the other end fixedly secured to a head base. An electro-distortion device can be used for exerting a displacement of the movable member, to enlarge the displacement at the one end and drive a printing member. The movable member is shaped substantially, between an actuating position and a fixing point, as one or more triangles in a face of the, flat material, in such a manner that the base and peak of the …

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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 9, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 9, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 16, 1989
GrantedAugust 9, 1994
Term endedAugust 9, 2011
Patent numberCA 1331313 C
Classification (IPC)B41J2/29

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMarch 16, 1989Patent grantedAug 9, 1994Term endedAug 9, 2011

Sources & verification

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