Printed material monitoring apparatus
CA 2036775 C · Owner: Naniwa, Mutsumi · Inventors: Suzuki, Kimio; Hayashi, Makoto; Naniwa, Mutsumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A printing machine such as a rotary offset press includes a printed material monitoring apparatus comprising sensor units for detecting light reflected from a number of unit pixel domains which are divided in a direction perpendicular to a direction in which a print surface of a printed material flows, optical fiber units for transmitting light reflected from the unit pixel domains to the sensor units and a signal processing unit for processing signals transmitted from the sensor units. The sensor units comprise detection sensors each being equipped with a plurality of light reception elements corresponding to the unit pixel domains respectively. The light reception elements are arranged in …
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 February 20, 1991 and granted August 2, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 20, 2013.
- 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.