Thermal transfer recording medium
CA 1260315 A · Owner: Polaroid Corporation · Inventors: Erlichman, Irving
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
7075, Title: THERMAL TRANSFER RECORDING MEDIUM ABSTRACT OF THE DISCLOSURE, A thermal transfer ribbon including a resistive heating element layer having a thermally transferable ink layer on the front side thereof is provided with a thermally sensitive indicator layer on the back side thereof. Heat generated in the resistive layer fuses the ink which transfers selectively to record grey scale image defining dots of various sizes on an ink receiving sheet in contact with the ink layer. The heat generated in the resistive layer also flows to the indicator layer to form corresponding indicator marks which are proportional to the recorded dots. The indicator marks are visible on the back side of …
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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.