Eastman-kodak Company

John S Badger

Hugh G McGuckin

Brad M Boersen

Mary Ellen Craver

Michael W Orem

Richard R Horn

Stephen J Waffle

Edward Albert Kurz

Shirleyanne E Haye

Thomas D Pawlik

Jean Marie Buongiorne

Janet M Huston

Paul A Schwartz

Jacques Roussilhe

Frank A Pettrone

Yang Shi

Ronald A Gogle

Ronald J Nothnagle

Jerel R Carli

Edgardo Lopez

David J Valvo

Paul Joseph Riesenberger

Jerry L Willer

David J Glacherio

A printing system includes a media input location for storing a recording medium prior to transport within the printing system for subsequent printing; a light source directed toward an extended region of the media input location; an array of photosensors restricted to only a substantially perpendicular movement relative to a plane of the media input location; and an optical path including a first optical path section from the light source to the extended region of the media input location and a second optical path section from the extended region of the media input location to the array of photosensors.

Media identification system with sensor array

A black-and-white photographic developing composition has improved stability and is more compatible with the environment when discarded. The composition includes one or more ascorbic acid developing agents and a preservative (such as a sulfite) and is essentially free of hydroquinone and similar developing agents. Improved stability is provided using a sulfo-substituted organic compound as a stabilizing agent. Such compounds are either aliphatic sulfo compounds or hydroxy-free aromatic sulfo compounds.

Ascorbic acid developing compositions stabilized with sulfo compound and methods of use

A two-part sepia toning kit can be used to provide desired stable, warm sepia toned images in black-and-white photographic positive or negative materials such as black-and-white photographic prints. One part of the kit includes a silver bleaching composition comprising a hexacyanoferrate as the bleaching agent and halide ions in a molar ratio of at least 2.25:1. The second part is a toning composition that includes a sulfur-containing toning agent.

Black-and-white sepia toning kit and method for its use

Color reversal photographic films are processed using a reversal solution comprising stannous ion and a quaternary ammonium compound as the sole microbial control agent, to reduce formation of visible biogrowth. The quaternary ammonium compound is present at very low concentrations of 1 to 20 ppm, and is preferably myristyltrimethyl ammonium bromide because it avoids precipitates with components that may leach out of some processed films.

Photographic reversal composition and method of use

A conditioning solution or bleach accelerating solution can be used to process color photographic films, especially color reversal films, to minimize magenta dye fade. This solution contains an antimicrobial composition that consists essentially of a polyaminocarboxylic acid or salt thereof as the sole antimicrobial agent. This agent is present in an amount of less than about 3 g/l.

Photographic conditioning solution containing polyaminocarboxylic acid as sole antimicrobial agent and method of use

Color photographic films are processed using a final dye image stabilizing solution containing certain aromatic or heterocyclic aldehydes, acetals or hemiacetals, and a mixture of specific surfactants. One surfactant is a nonionic polyethoxylated, nonfluorinated compound, or an anionic non-fluorinated sulfate or sulfonate, and the second surfactant is a nonionic or anionic fluorinated compound. This processing solution provides processed films, with or without a magnetic backing layer, that are free of scum or other residues, non-tacky, and resistant to abrasion and fingerprinting. The stabilizing solution can be provided in concentrated form, particularly when a glycol is included.

Photographic stabilizing processing solution and method of use

A photographic color developing composition includes a color developing agent and at least 0.005 g/l of an anti-tar agent. Such anti-tar agents include a fluoroalkylpolyethyleneoxy alcohol, polyvinyl alcohol, a polyethylene glycol, a free acid of an organic phosphate ester or a salt thereof, or a polyethyleneoxide(20) sorbitan monooleate Inclusion of these agents has been found to significant reduce or elimination tar formation during the processing of color photographic materials, especially color motion picture films.

Color developing composition and method of use in photoprocessing

Color reversal photographic films are processed using a reversal solution comprising stannous ion and a quaternary ammonium compound as the sole biocide, to reduce formation of biogrowth. The quaternary ammonium compound is present at very low concentrations of 1 to 20 ppm, and is preferably myristyltrimethyl ammonium bromide because it avoids precipitates with components that leach out of processed films.

Color photographic films are processed using a final dye image stabilizing solution containing certain aromatic or heterocyclic aldehydes, acetals or hemiacetals, and a mixture of specific surfactants. One surfactant is a nonionic polyethoxylated, nonfluorinated compound, or an anionic non-fluorinated sulfate or sulfonate, and the second surfactant is a nonionic or anionic fluorinated compound. This processing solution provides processed films, with or without a magnetic backing layer, that are free of scum or other residues, non-tacky, and resistant to abrasion and fingerprinting. The stabilizing solution can be provided in concentrated form, particularly when a glycol is included. The color films can be more rapidly processed, for example, within 60 seconds for the stabilizing step.

Method of rapid processing using a stabilizing solution

Color photographic materials are processed using a final rinse solution containing a water-soluble or water-dispersible glycol, and a mixture of specific surfactants. One surfactant is a nonionic polyethoxylated, nonfluorinated compound, or an anionic non-fluorinated sulfate or sulfonate, and the second surfactant is a nonionic or anionic fluorinated compound. This solution provides processed materials, with or without a magnetic backing layer, that are free of scum or other residues, non-tacky, and resistant to abrasion and fingerprinting. The final rinse solution can be provided in concentrated form, particularly because the glycol is included.

Photographic final rinse processing solution and method of use

Silver halide photographic color films can be effectively stabilized using a chemical stabilizing kit of two concentrated chemical solutions that are mixed and diluted at least 5:1 when used. Each concentrated chemical solution contains some of the necessary chemicals for the processing solution, but keeping them individually packaged prior to use prevents biocide instability and other problems when all of the chemical components are mixed in concentrated form. One concentrated chemical solution includes hexamethylenetetramine and an alcoholamine such as diethanolamine. The other concentrated chemical solution includes the biocide(s) and one or more surfactants.

Two-part photographic chemical stabilizing kit and method of

A processing composition includes a combination of two different mercapto-substituted anti-sludging agents. The first compound is a conventional mercapto-substituted compound, and the second compound is a mercapto thiadiazole glycerol propoxylate having the formula I: ##STR1## This processing composition can be used to provide black-and-white development of both color reversal and black-and-white photographic elements, and particularly in high contrast graphic arts films.

Photographic developing composition containing anti-sludging agent and

Color reversal photographic films are processed using a reversal solution comprising stannous ion and a quaternary ammonium compound as the sole biocide, to reduce formation of biogrowth.

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Webster, NY, United States of America

John S Badger