Agfa Gevaert Nv

Agfa-gevaert Ag

Marc P Stevens

August M Marien

Serge M Tavernier

Paul J Coppens

Alfred Pischtschan

Jos A Vaes

Robert F Janssens

Johan Hubert Van Hunsel

Rafael P Samijn

Gery Vancoppenolle

Rudiger Plaetschke

Klaus Sommer

Raf Voets

Paul Marksch

Louis Bollens

Mikolaas C De Jaeger

Leo Morbitzer

Joannes Verheijen

There is provided an imaging element having a flexible support and comprising on said support a photosensitive layer comprising a silver halide emulsion and an image-receiving layer comprising physical development nuclei, said layers being in water permeable contact with each other, characterized in that said flexible support is a polyester film having a thickness between 0.15 and 0.35 mm and consisting of polyethylene 2,6-naphthalenedicarboxylate. There is also provided a method for making a lithographic printing plate comprising the steps of image-wise exposing an imaging element as defined above and subsequently developing a thus obtained imaging element by an alkaline processing liquid in the presence of developing agent(s) and silver halide solvent(s).

Imaging element with a flexible support and method for making a

A shaped article, in particular a support for image information layers prepared from a biaxially stretched film prepared from a polymer blend of 50 to 97 wt.% of a linear polyester and 3 to 50 wt.% of a polymer containing styrene, wherein the percentages relate to the sum of polyester and polymer containing styrene, is characterised by particularly-elevated covering power.

Shaped plastic article

A photographic material comprising at least one silver halide emulsion layer and a copolyester support-said copolyester comprising polyether group(s) in the side chain is disclosed. Preferably the copolyester is prepared by copolycondesing diol moieties that comprise a polyether group substituted with a sulfonic acid group in acid or salt form into the copolyester.

Photographic material comprising a copolyester support

Processes are disclosed for incorporating a water-insoluble substance in a diffusion resistant form into a hydrophilic colloidal layer of an element. In a first process A the water-insoluble substance is present during the polycondensation of diol(s) or polyol(s) and carboxylic acids, whereby at least 6 mole % of the reagents bear a water-solubilizing group, preferably a sulpho group in the salt form; the obtained mixture of polyester and water-insoluble substance is then dispersed in an aqueous medium. In an alternative process B the polyester is first prepared and then mixed homogeneously with the hydrophobe substance by melting in a reactor or extruder; the mixture is then similarly dispersed. The obtained latex is then incorporated in a hydrophilic colloidal layer which is coated on a support. The obtained element can serve as base for a reprographic image, e.g. a color proof image, or can form part of a complete photographic material. In a preferred embodiment the water-insoluble substance is a brightening agent.

Process for incorporation of a water-insoluble substance into a

Electrophotographic method of obtaining lithographic printing plates comprising the following steps: (i) uniformly electrostatically charging a photoconductor element, (ii) image-wise discharging said photoconductor element, (iii) developing the resulting electrostatic charge pattern with dry toner particles of which more than 90% by volume have an equivalent particle size diameter less than 10 microns and more than 50% by volume have an equivalent particle size diameter less than 7 microns, (iv) electrostatically transferring the developed image to a toner receiving plate, said toner receiving plate comprising a plastic film support that is thermostable to a temperature of at least 140.degree. C. and a crosslinked hydrophilic layer thereon, said layer containing infrared absorbing substances in such an amount that the reflection density of said layer in the visible spectrum is between 0.4 and 1.4, and (v) fixing the transferred toner to said toner receiving plate by infrared radiation fusing.

Toner receiving printing plate

A process of making biaxially oriented polyethylene terephthalate photographic film having a controlled amount of curl in the longitudinal direction, wherein the file is subjected to longitudinal stretching while being asymmetrically heated across its thickness, then wound into a stock roll, and the stock roll thus obtained is heat-tempered. The stock roll after heat-tempering may be longitudinally slit, cut and rewound into smaller rolls in a winding direction opposite to the direction of the longitudinal curl induced in the film during the longitudinal asymmetrical heat-stretching.

Process for controlling the curl of photographic film

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Belsele, Belgium

Marc P Stevens