Recording head and recording apparatus
CA 2207233 C · Owner: Canon Kabushiki Kaisha · Inventors: Tamura, Yasuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a reliable recording head free from any operation error. M x N recording elements are divided into N blocks each having M recording elements and are driven for every M recording elements N times. M x N driving circuits energize and drive the M x N recording elements. A selection circuit outputs N block selection signals for selecting the N blocks to be divisionally driven. An input circuit inputs recording data corresponding to the M recording elements. An output circuit outputs a driving signal to the driving circuits in accordance with the recording data input from the input circuit and the block selection signals. The selection circuit outputs the N block selection signals …
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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
- Filed June 6, 1997 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.