Eastman-Kodak Company

Philippe Strauel

Gerard Amede Friour

Olivier Jean Poncelet

Didier J Martin

Claude G Goumont

Francoise M Thomas

Luc R Gourlaouen

Isabelle Fleury

Olivier Jean Christian Poncelet

An apparatus and process of controlling ink quality are provided. The process includes providing an imprinted polymer microbalance in an inkjet printer, whereby the microbalance presents an equilibrium setpoint vibratory characteristic when in contact with a setpoint ink containing at least one target compound compatible with the imprinted polymers; placing the microbalance in contact with a supply ink printer; measuring a vibratory characteristic of the microbalance; and issuing a warning when the vibratory characteristic is different from the setpoint characteristic.

Process and device for ink quality control

This invention relates to a 3-part kit preparing for a photographic developing bath for the processing of color photographic materials. The kit of this invention affords an efficient ready-to-use developing solution.

Kit for photographic color developing bath

The present invention concerns a method for the depollution of photographic effluents. The method of the invention comprises the step of forming in situ in the effluent an adsorbent of the hydrotalcite type. This method is useful for the elimination of silver and iron in photographic effluents.

Method for eliminating heavy metals from a photographic effluent

The present invention concerns the treatment of an aqueous effluent and consists of ridding it of the iron which it contains, notably in the form of a complex. The method according to the invention consists of treating this effluent by successively a silicate, and a magnesium and aluminium hydroxycarbonate, then decanting and filtering. The method according to the invention is particularly useful in the treatment of photographic effluents.

Method for eliminating iron from a photographic effluent

The present invention concerns a method of treating a seasoned ascorbic acid developer for developing silver halide photographic products. The method of the invention comprises the step of treating the developer through a resin having a greater selectivity for bromide ions than for carbonate ions. This method enables ascorbic acid developers to be regenerated efficaciously.

Method of treating a seasoned ascorbic acid developer

The present invention concerns a photographic product containing at least one light-sensitive layer consisting of a blend of silver halide emulsions. The blend of the invention is formed by at least one pure bromide emulsion, the proportion of fast emulsion grains in the blend is less than 50% compared with the total number of silver halide grains, and the proportion of slow emulsion grains in the blend is greater than 20%. The present invention makes it possible to obtain a radiation-sensitive photographic product which has improved sensitivity and granularity.

Photographic product comprising a blend of emulsions with different

The invention concerns a process for obtaining emulsions of the core/shell type having a low fog level. The process consists of precipitating, by the double jet method, a photographic emulsion comprising core-shell silver halide grains, the concentrations of halides varying progressively during at least the formation of the core. Application to reversal or negative photographic products is disclosed.

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Givry, France

Philippe Strauel