Exposure device
CA 2124997 C · Owner: Tsuji, Masaaki · Inventors: Tsuji, Masaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An exposure device for sucking photosensitive materials of different widths on an exposure table. A suction belt, driven by a motor, is formed with a plurality of suction holes uniformly. On the back of the suction belt is mounted a suction box with a belt support plate which is formed with a plurality of suction holes. A pair of adjusting plates are attached to the belt support plate on its back. By adjusting the position of the adjusting plates in a width direction, the suction holes in the outermost rows at both sides are opened and closed. Thus the suction width for the suction belt can be adjusted according to the width of the photosensitive material.
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 June 2, 1994 and granted March 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2016.
- 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.