Eastman-kodak Company

Charles E Heckler

Stephen P Singer

Bernard A Clark

Louis Elbert Friedrich

Philip A Allway

Tania Zuberi

Huijuan D Chen

Xiaoru Wang

Joan C Potenza

Paul A Kildal-Brandt

Thomas A Weber

Judith A Bogie

The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless imidazole compound of formula (I) that undergoes less than 10% chemical or redox reaction with oxidized developer and which enables the photographic speed of the element to be increased by at least 0.05 stop without increasing granularity, compared to the same element without the compound, wherein the compound of formula (I) has the structure: wherein

Photographic element containing a speed-enhancing compound

The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless heterocyclic compound having either one or two hetero atoms in the ring or ring system, being other than an imidazole compound, that undergoes less than 10% chemical or redox reaction directly with oxidized developer and which has a partition coefficient to enable the photographic speed of the element to be increased by at least 0.03 stop without increasing granularity, compared to the same element without the compound. The heterocyclic compounds increase speed without a concomitant increase in size of the light-sensitive silver halide grains.

Photographic element with speed-enhancing compound

This invention relates to an ink composition (and a method of printing therewith) comprising water, a humectant, and polymer-dye particles, wherein said polymer-dye particles comprise a colorant phase containing a water insoluble dye of formula (I), and a polymer phase, said particles being associated with a co-stabilizer wherein Ris a substituent as described in the application;

Stable ink jet ink composition and printing method

Disclosed is a color photographic element comprising at least one light sensitive silver halide emulsion layer containing a compound that does not react with oxidized developer, has a Log Kow high enough to improve speed, compared to the same layer without the compound, and comprises

Color photographic element containing improved heterocyclic speed enhancing compound

There is described a method of calibrating an analyzer in the field, using parameters designed for a 'standard' analyzer that may be different from the field analyzer. In this way, it is not necessary to use only certain slide elements of a given chemistry on one analyzer, and certain other slide elements of that same chemistry on another analyzer. Instead, the slide elements are made interchangeable by calibration math which allow the field analyzer to convert its raw response R.sub.F into a response R.sub.standard of the selected 'standard' analyzer, using the equation

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Rochester, NY, United States of America

Charles E Heckler