Correcting the position of a filming apparatus relative to printing paper in 3d photographic printing
CA 2111702 A1 · Owner: Tsuji, Masaaki · Inventors: Oka, Takayuki; Maeda, Hisahiro; Itojima, Mitsuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1) In the present invention displacement of lens of photographic printing apparatus is made possible with the result that the said lens is positioned at regular position when printing is to occur, while in operations other than photographic printing,the said lens is evacuated to a position far from the negative film so that lensprotection and adjustments are easier. 2) In the present invention a sample-print detector apparatus that consists of CCD cameras, line sensors and the like measures the shift in the center of exposure,and the correction required is automatically registered. 3) In the present invention by rotating negative mask member, lens member andexposure station by an identical …
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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 April 13, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2015.
- 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.