Vacuum printer
CA 1193137 A · Owner: Douthitt Corporation · Inventors: Tooson, Ronald; Maher, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a vacuum printer for the graphic arts having a bed a blanket frame, upon the bed including a flexible impervious blanket having a peripheral sealing bead a, glass frame juxtaposed over the blanket frame in snug registry with the blanket bead defining a contact printing chamber, the glass frame being movably mounted for opening and closing movements relative to the blanket frame a vacuum source having, a first vacuum conduit extending into communication with the printing chamber for evacuating it; the improvement which comprises a perforated blanket support plate within the blanket frame underlying the blanket and defining within the blanket frame a blanket chamber. A second vacuum …
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 10, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 10, 2002.
- 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.