Abstract: Systems and method for determining a source of abrasion in film equipment by using a test film having fluorescent material thereon and illuminating the film equipment using a fluorescence creating light source to cause fluorescence of any part having fluorescent material deposited thereon by the test film.
Abstract: An improved photographic filmstrip having localized transmission barriers for inhibiting propagation of light into still unimaged transparent portions of microfiche recording system intermediate filmstrips by light-piping action is described. The barriers serve to optically isolate the subsequently-to-be-imaged still unexposed portion of the filmstrip in a dispensing film head from the illumination used to transfer the previously developed image on the exposed portion of the strip onto a permanent recording medium, such as a microfiche film card. The barriers consist of arrays of holes spanning the width of the filmstrip. Multiple scattering and direct escape paths produced by the holes cause significant reduction in the undesired propagation. Additional propagation reduction is achieved by a fiber bearing element pressed over the hole arrays so as to insert fiber clusters into the holes. Use of the arrays for sprocket engagement to facilitate film transport is described.
Abstract: Each one of three filters, corresponding to different primary subtractive colors of a color picture, is embossed as a relief pattern on the same side of a plastic film within a separate one of any three of four side-by-side regions into which the film is divided. This permits the film to be thrice-folded to both (1) superimpose the three filters substantially in registration with each other and (2) place the embossed side of the film within the interior of the thrice-folded film where said filters are protected.
Abstract: A protected photographic film structure includes a strip of photographic film comprised of a series of frames, an information carrier strip secured to the strip of photographic film and running alongside the strip of film and bearing information concerning the printing order and/or the customer giving the printing order, and a pair of flexible protective strips each secured to the information carrier strip along the length of the information carrier strip at a respective one of the two faces of the information carrier strip. Each protective strip extends in direction from the information carrier strip towards the strip of photographic film and overlies and thereby protects a respective one of the two faces of the strip of photographic film.
Abstract: A wound roll of filmstrip of the type having a photographic emulsion layer on one strip face and a raised stripe disposed along one edge of the opposite strip face is so formed as to produce temporary adhesion between the stripe of one convolution and the emulsion layer of an adjacent convolution. Such adhesion or tacking, restricts relative movement of the convolutions, thereby avoiding effective axial expansion of the roll and the resultant generation of undue frictional forces during advancement of the strip through a cartridge in which is is housed.Such tacking may be achieved by forming the strip into a roll and by so applying energy to a flat end face of the roll as to cause localized melting of the emulsion layer of one convolution at its interface with the raised stripe of an adjacent convolution, whereupon subsequent cooling and rehardening of the emulsion produces adhesion of the convolutions at such interface.
August 21, 1974
Date of Patent:
May 25, 1976
Eastman Kodak Company
Robert I. Edelman, Willis L. Stockdale, Robert A. Sylvester, Corrado Zollo