Device for clamping recording substrates in sheet form
CA 2069113 A1 · Owner: Linotype-Hell Ag · Inventors: Lassen, Bernd; Balzeit, Ralf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for clamping film material in sheets to the recording drum of a reproduction arrangement and the method of operation of said device. The recording drum (1) has axially directed rows (6) of suction apertures for securing the image substrate (22) by a vacuum. In the walls (8) of the recording drum (1) there are suction channels (7) each interconnecting, the suction apertures (5) of one row (6). In the recording drum (1) is arranged a vacuum distributor (25; 26; 27; 29) controllable by the rotary movement of the drum (1) which selectively connects the individual suction channels (7) or the appropriate rows (6) of suction apertures to a fixed vacuum pump (13). …
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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 17, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2012.
- 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.