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:
Jun. 05, 1990
Filed:
Nov. 22, 1988
Hugo Knecht, Schofflisdorf, CH;
Rene Luscher, Kloten, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
In a photographic copy and enlarging apparatus, a film stage is located on a work table. A transportation means for the film comprises a film transport roller placed on the film stage. As viewed in the direction of the film transport, a front and a rear clamping device are provided for the film. The clamping devices are laid out so that they lead to the formation of a loop by the film being held, whereby the length of the film hanging laterally from the work table is shortened by at least one half and does not contact the floor. The clamping devices permit the film transport means to clamp the front end of the film in the rear clamping device and to draw the rear end of the film from the front clamping device.