Exposure device and method for compensating optical defects
CA 2391042 A1 · Owner: Punch Graphix Prepress Germany Gmbh · Inventors: Lullau, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an exposure device for exposing an image of an electronically stored document on a support especially a printing plate (1), comprising an image processing electronics device (2) in which the image data can be stored, a light modulator (7) which can be electronically controlled with the image processing electronics device (2) especially an LCD screen (7) , or a micromirror array an illumination device (8, 9) for illuminating the light modulator (7) and a projection lens (11) for projecting the light modulator (7) onto the support (1). According to the invention the device is , improved by the image processing electronics device (2) comprising a compensation …
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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 March 8, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2023.
- 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.