Thermal head device
CA 2019265 C · Owner: Tabuchi, Hiroshi · Inventors: Tabuchi, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermal head device suitable for use on a facsimile machine or the like, including a positioning member for aligning the heating element of the thermal head with the center axis of the platen roller. The thermal head device is provided with a preload member adapted to urge the positioning member in a predetermined direction into abutting engagement with the rotational shaft of the platen roller to hold the heating element in a constant position relative to the platen roller to ensure production of prints of satisfactory quality.
Read the whole patent
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 19, 1990 and granted June 21, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2012.
- 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.