Method and means for separating leader from film in photographic processing machine
CA 2117723 C · Owner: Kiyonaga, Yutaka · Inventors: Kiyonaga, Yutaka; Yamamoto, Takuya; Negoro, Hisashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The leader attached to a web of film is cut from the film while processing the film in a photographic processing machine. Before feeding the film to the printing unit the, leader is separated from the film. At a turning point where the film feed direction extending from the film drying unit to the printing unit changes the film is fed, straight ahead and the leader is cut off the film by a cutter. The film is fed back in a reverse direction and its end is turned up by a guide. When the printing unit gets vacant, the film without the leader is fed into the printing unit.
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 19, 1994 and granted December 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 2016.
- 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.