Temperature controller for ink jet printing
CA 2179046 A1 · Owner: Shrivastava, Dilip Kumar · Inventors: Shrivastava, Dilip Kumar; Sutera, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A temperature control unit is incorporated directly into the printhead (10) of an ink jet printing system to provide temperature control. The temperature control system includes a heat pump assembly consisting of at least one thermoelectric device (40 63, 64), coupled to a, heat exchanger (42 62) through which the ink flows. The thermoelectric device (40 63, 64) conveys heat to or from the heat exchanger (30) carrying the ink depending upon actual ink temperature versus a desired temperature. If the ink is too hot excess heat is dumped to, the heat exchanger (30) (or second heat exchanger (42 62)) which may be air or liquid cooled. In the event that the ink is too cool the, electrical …
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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 November 18, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2016.
- 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.