Use of a thermal transfer printer for producing a photomask
CA 1321875 C · Owner: Mizuguchi, Jin · Inventors: Mizuguchi, Jin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
K-16636/-, Use of a thermal transfer printer for producing a photomask Abstract or the Disclosure, The invention relates to the use of a thermal transfer printer and of an ink ribbon containing a pigment or dye that absorbs light in the range from 350 to 450 nm for the direct production of a photomask from an electronically coded sources of information on a metal plate (PS plate) coated with a positively working photopolymer which is sensitive to light in the range from 350 to 450 nm, and, as surface layer with a polymer, which is soluble in alkaline solution and is permeable to light in the range from 350 to 450 nm, such that the image produced by the thermal transfer printer on the PS …
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
- Granted September 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 7, 2010.
- 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.