Reflective and transmissive document reading apparatus and a method of reading a document
CA 2096155 C · Owner: Sharp Kabushiki Kaisha · Inventors: Motowaki, Kazuyuki; Tsuchiya, Shinichi; Yoshizaki, Shusaku
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scanner provided with means for reading both reflective and transmissive documents, comprises: two CCD sensors one for reflection mode to, read reflective documents and the other for transmission mode to read transmissive documents, disposed respectively on one side of a light source and, on the opposite side thereto with a document table therebetween; and a reflective/transmissive document mode discriminating means wherein when a, light source is turned on, a judgment is made on whether or not light to be transmitted is blocked. The circuits of CCD sensors can be automatically changed, between transmission mode and reflection mode. Specifically a reading window, disposed in a …
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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 May 13, 1993 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2015.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.