Digital optical disc encoder system
CA 2078283 C · Owner: Taylor, Thomas Neil · Inventors: Taylor, Thomas Neil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An encoder system for providing a large number of actual positional control pulses per revolution utilizes an optical digital disc. The disc is driven by the work piece transport system. A playback unit similar in construction to audio disc players can be used. The positional control information is recorded on the disc as the disc is being driven by the transport system with which the disc is to be associated. Mechanical anomalies of the drive system are compensated for in the recording process. The accuracy of the positional information is improved. The system is especially useful for high resolution ink jet printing system.
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 September 15, 1992 and granted April 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2014.
- 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.