Eastman-kodak Company

Didier J Martin

Olivier Jean Poncelet

Jeannine Rigola

Christian G Guizard

Gerard Amede Friour

Thierry G Vachette

Yannick J Lerat

Oliver J Poncelet

Jean-Francois Diaz

C&eacute;cile A Maudhuit

Philippe Strauel

Luc R Gourlaouen

Marcel L Riveccie

Rejane R Benard

Jeanine Rigola

Jean H Durand

Olivier Jean-Christian Poncelet

H&eacute;l&egrave;ne C Lecacheux

Guy J Nowogrocki

Jean-Claude F Boivin

Gaetan J Mairesse

The present invention relates to a material intended for forming images by inkjet printing having good stability to ozone and to light as well as a uniform surface, to obtain a high-quality printed image. The material comprises a support and at least one ink-receiving layer, wherein the ink-receiving layer comprises at least one polysaccharide, such as carrageenan, and at least one hydriphillic polymer having hydroxyl groups, such as polyvinyl alcohol and guar gum, and inorganic particles having a neutral or positive surface charge.

Material for forming images by inkjet printing

Method for processing a color reversal photographic film

The invention relates to a method and device for processing an exposed color reversal photographic film. This method enables the water consumption of the washing baths to be limited, the water levels being maintained by a counter-current coming from the bath placed downstream, an equivalent volume of water being discharged through an overflow. The wash waters are recovered and treated by a nanofiltration unit capable of giving a permeate which can be recycled to the washing baths. This method makes it possible to overcome the problem of the presence of tin (II) in the first washing bath supplied with water by a counter-current coming from the reversal bath. This process also makes it possible to overcome the problems of discharges of chemical substances to the drains while maintaining a good sensitometry of the developed films.

Method and device for processing a color reversal photographic film

An inorganic polymeric aluminosilicate material and a method for preparing the same, are disclosed. Instead of having a fibrous structure, the material has a structure consisting of spindles with a length in the range of from 10 to 100 &mgr;m and a width in the range of from 2 to 20 &mgr;m. This polymeric alumino-silicate can be used for the production of antistatic layers.

Inorganic polymer based on aluminium and silicon

The invention relates to a method of recycling wash-water resulting from the treatment of a film provided with a carbon particles based backing layer, and especially from a washing treatment to remove the said carbon particles based backing layer. The method comprises the step of passing the wash-water through an microfiltration unit equipped with a microfiltration membrane made from a polytetrafluorethylene-based membrane. The method enables the regeneration of the wash-water and its recycling with a high efficiency and considerable lowering of the water consumption used in this step of the processing.

Method of recycling wash-water resulting from film treatment

The invention relates to a method for processing an exposed color reversal photographic film. This method comprises the step of circulating the exposed film in a fixing bath, in and then a final washing zone comprises at least one washing bath. Each washing bath of this zone comprising a buffer prepared from a weak acid and its conjugated base, with a conjugated base concentration more than 1 g/l, said buffer being chosen to maintain the pH between 4.5 and 6. The method comprises then the step of collecting the contents of the washing baths of this zone and the passage of said contents through a nanofiltration device comprising a membrane, whose cut-off threshold is more than the molar mass of the weak acid and the conjugated base making up the buffer, to give a permeate that is recycled in the final washing zone.

A method to improve the functioning of a membrane of a nanofiltration device provided to filter a solution optimizes the retention rate of the membrane. In the method, the permeate and the retentate are circulated through the nanofiltration membrane for a time before starting to use the membrane. The method is applicable to the treatment of photographic baths.

Process to improve the functioning of a membrane of a nanofiltration device

The invention relates to an ink reservoir for ink jet printing. This reservoir includes a solid electrolyte pellet inserted in the wall of the reservoir, which conducts O,ions when subjected to an electric current. The reservoir allows to control the internal atmosphere of the reservoir above the free surface of the ink that it contains.

Atmosphere control device for ink reservoir applied to ink jet printing

The invention relates to a device for moving fluids. The invention device includes an enclosure, a solid electrolyte which can produce oxygen in the enclosure so as to distort a membrane that acts to move a fluid in an enclosure. This device is useful to produce a head for ink jet printing.

Device using the action of a gas for controlling the movement of a fluid

An inorganic polymeric aluminosilicate material and a method for preparing the same, are disclosed. Instead of having a fibrous structure, the material has a structure consisting of spindles with a length in the range of from 10 to 100 &mgr;m and a width in the range of from 2 to 20 &mgr;m. This polymeric aluminosilicate can be used for the production of antistatic layers.

Inorganic polymer based on aluminum and silicon

A method for selectively extracted species from an aqueous solution which comprises contacting the aqueous solution with a membrane capable of selectively transporting species from a liquid to another, the membrane comprising a porous polymer support having an average surface pore size less than 100 nm, coated with a continuous layer of a fluorinated polymer obtained by plasma energized chemical vapor deposition (PECVD) using a plasma containing at least one fluorinated compound.

Method for treating an aqueous solution containing ionic species to be extracted selectively

The invention concerns a method of decontaminating a photographic effluent. The method comprises contacting the effluent with a fibrous polymeric alumino-silicate and, optionally, with a cerium-based catalyst on an activated carbon membrane. The iron, silver, thiosulphate and organics contents of photographic effluents are reduced.

Decontamination of a photographic effluent by treatment with a fibrous polymeric alumino-silicate

The invention concerns a method for decreasing the oxygen content of the atmosphere above photographic processing baths. The method comprises using a solid electrolyte which is a compound of bismuth, vanadium or another transition metal. The oxidation in air is thus minimized and the life of the bath is extended.

Method for minimizing the aerial oxidation of photographic developers

The present invention concerns a separative membrane, as well as a separation device containing this membrane, and a method for using this device. The membrane of the present invention comprises a support, the hydrophobicity of one of whose faces has been modified, the opposite face having an active layer comprising an inorganic hydrogel material and an ion carrier. This membrane has improved selectivity.

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Givry, France

Didier J Martin