Eastman-Kodak Company

Joan C Potenza

David Hoke

Robert F Romanet

Chang K Kim

Steven G Link

Steven Evans

Stephen P Singer

David T Southby

Louis Elbert Friedrich

Judith A Bose

Hans F Schmitthenner

Ronald R Valente

Francesco DeBellis

Marcel B Madaras

Donald R Diehl

Richard L Parton

Huijuan D Chen

Xiaoru Wang

James West Blease

Lois A Buitano

Charles Warren Wright

Shari L Eiff

Ann L Carroll-Lee

Ellen J Pyszczek

Mihaela L Madaras

Charles E Heckler

John E Leary, Jr

Paul A Loncle

The present invention relates to an aqueous ink comprising at least water, and a colorant of Formula 1 wherein A is any substituted or unsubstituted aromatic or heteroaromatic moiety; R is hydrogen or any non-metallic group; R1 is hydrogen, or any substituted or unsubstituted aryl, alkenyl, alkynyl or alkyl group; R2 and R3 are hydrogen or any non-metallic group, and R2 and R3 can be joined to form a ring that may be aromatic, aliphatic or heterocyclic and may be further substituted; or a colorant of Formula 2: wherein R4 is hydrogen or any non-metallic group; n is an integer of 0-4; and, if n is 2-4, the R4 groups may be the same or different from each other, and a printing method for creating an image on an ink compatible substrate using colorants of Formula 1 or Formula 2.

Inkjet inks containing azo pyrazolobenzopyrimidineone class of colorants

The invention relates to monoazo colorants derived from pyrazolobenzodiazinedioxides of Formula 1:  wherein Rand Rare hydrogen or any non-metallic group, n is 0-4, Ris hydrogen, acyl, aryl, alkenyl, alkynyl or alkyl, A represents an aromatic heterocyclic ring or an aromatic group of Formula 2:  wherein Rand Rare hydrogen, alkyl, sulfonic acid, or 1-4 carbon alkoxy, Ris any non-metallic group, m is 0-3, and Rand R, Rand R, or, when m&#x3e;1, two Rgroups can be joined to form a fused carbocyclic or heterocyclic aromatic or non-aromatic ring. The invention also relates to an aqueous ink that comprises at least one colorant of Formula 1:  wherein A represents an aromatic or heteroaromatic ring, and A can be bonded to other rings that can be aromatic, aliphatic or heterocyclic, and an ink printing method using the colorant-containing ink.

Monoazo colorants from pyrazolobenzodiazinedioxides

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

This invention relates to a yellow ink composition for ink jet printing comprising a dye represented by Formula I, water and a humectant: wherein:

Yellow dyes for ink jet inks

The invention relates to an ink composition comprising solubilized yellow dyes for inks with improved ozone and light stability.

Solubilized yellow dyes for inks with improved ozone and light stability

This invention relates to an ink composition comprising a dye represented by Formula I: wherein

Solubilized dyes for inks

This invention relates to an ink jet ink set comprising; A) a cyan ink comprising an aqueous vehicle and a sulfonated copper phthalocyanine dye, B) a magenta ink comprising an aqueous vehicle and an azo-naphthol derivative magenta dye, a metal complex magenta dye, or a anthrapyridone magenta dye or mixtures thereof, C) a yellow ink comprising an aqueous vehicle and a pyrazoleazoindole yellow dye or azo pyrazole-azole yellow dye or mixtures thereof and D) a black ink comprising an aqueous vehicle and a metal complex black dye.

Ink jet ink set

This invention relates to a silver halide photographic material comprising at least one silver halide emulsion having associated therewith at least one dye of Formula I ##STR1## wherein: W and W' represent independently an O atom, a S atom, a Se atom or a NR' group wherein R' is a substituted or unsubstituted alkyl group,

Photographic material having improved color reproduction

The invention provides a photographic element comprising a light sensitive silver halide emulsion layer having associated therewith a dye-forming coupler having formula I: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl, aryl, and heterocyclic groups;

Photographic element containing an improved pyrozolotriazole coupler

There are described intermediates for the preparation of known pyrazoloazole photographic magenta dye forming couplers and processes for making and using these intermediates. The intermediates are low molecular weight compounds represented by the structure: ##STR1## wherein: R, X, R.sup.1 and Y are defined herein. The process for making these intermediates involves diazotizing a 5-amino-1H-pyrazole to produce a 5-diazo-1H-pyrazole, then condensing the diazotized product with an active methine or methylene compound having a pKa of 14 or less to produce a substituted hydrazone and then subjecting the hydrazone to cyclization and reduction, in either order.

Intermediates for the preparation of pyrazoloazole photographic

The invention provides a process for preparing a coupler compound having a thioether group at the coupling site comprising reacting in the presence of a base (a) a coupler compound having at least one hydrogen at the coupling site with (b) a mixed disulfide comprising either a tetrazole group or an oxadiazole group linked to one sulfur atom and an alkyl or aryl group linked to the other sulfur atom.

Process for preparing a thioether compound

Photographic element containing an improved pyrazolotriazole coupler

The invention provides a process for making a thioether compound having the formula:

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Rush, NY, United States of America

Joan C Potenza