The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 1977
Filed:
Jan. 26, 1976
James A Millett, Fountain Valley, CA (US);
Lure Camera Ltd., Vancouver, CA;
Abstract
A film strip controller for exposed and developed photographic roll film adopted to be used with a photographic printing apparatus employing a roll film strip transport drive using slip clutches, includes a magnetic brake assembly responsive to signals generated as a result of varying light intensity incident upon a plurality of photosensitive detectors. The brake assembly stops the roll film being transported through the controller with each negative image on the film strip in proper registration and locates the negative in the proper plane so the shutter of the associated photographic printing apparatus can be operated to expose a positive print of the negative. Operation of the shutter may release the brake of the controller allowing the film to continue to move through the film strip controller until stopped by the brake means for the next negative. Logic circuits associated with the brake assembly and the photosensitive detectors insure proper control by rejecting spurious signals caused by irregularities sensed on the film strip.