Ink ribbon for thermal transfer printer
CA 2057780 A1 · Owner: Tago, Yasuo · Inventors: Obata, Yoshiyuki; Suenaga, Seiko; Tago, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ink ribbon for thermal transfer printer comprising a foundation and a thermal transfer layer said, thermal transfer layer comprising a colored layer containing a wax-like substance as a main component of the vehicle thereof, and a thermoplastic adhesive layer having a film-forming property provided on the surface of the colored layer, said thermoplastic adhesive layer having a melt viscosity of 1 x 104 to 5 x 106 cP at a temperature by 40°C higher than the softening temperature of the adhesive layer, a softening temperature of 45° to 90°C a, solidifying temperature of 25° to 65°C and a temperature, difference of at least 10°C between said softening temperature and said solidifying …
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 December 17, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2013.
- 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.