Input device for scanning documents with magnetic printing
CA 1071764 A · Owner: International Business Machines Corporation · Inventors: Shapiro, Eugene; Fan, George J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present disclosure describes in one embodiment, a scanner, making use of a bubble plate for transfer of information. Circuits and structures are provided for populating that is filling the bubble, plate initially feeding a document into close proximity with the plate establishing a field bias relative to the document and plate which achieves an imaging effect of the information on the document into the bubble plate, thereafter moving the plate away from the document feeding the document out, and shifting the information contained in the bubble plate to another device, such as a storage unit or the like. Another embodiment utilizes drum members for the bubble and bias elements and this …
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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
- Granted February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
- 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.