Eastman-kodak Company

Richard A Landholm

Jan R Haase

James J Krutak

Xin Wen

Linda A Kaszczuk

Anthony R Lubinsky

Richard B Anderson

David Leroy Cole

Carl H Eldredge

Elaine H Hoffmeister

Derek D Chapman

Huijuan D Chen

Jerry M Robbins

In a method for microfluidic printing of colored images on a receiver, including providing a first set of reservoirs containing colorant precursors for different colors; providing at least one reservoir containing a reactant; and reacting the colorant precursors and reactant(s) to provide colored pixels of the desired colors.

Using colorant precursors and reactants in microfluidic printing

An inkjet printing apparatus for printing continuous tone images on a receiver in response to a digital image, including a structure defining a plurality of colorant or colorant precursor receiving chambers, and another structure defining at least one mixing chamber for receiving a plurality of microdrops of colorants or colorant precursors from the colorant or colorant precursor receiving chambers to produce a desired colorant. The apparatus further includes a microdrop nozzle for each receiving chamber and in communication with the mixing chamber and a printing nozzle for each mixing chamber for causing a mixed drop to be delivered to the receiver. Further, the ejection of the desired number of microdrops is controlled and in response to the digital image and connected to the receiving chamber and the mixing chamber and for causing the desired number of microdrops to be ejected into the mixing chamber and then ejecting a mixed drop of colorant from the mixing chamber through the printing nozzle to the receiver.

Apparatus for mixing and ejecting mixed colorant drops

A thermal recording element consisting of a support having thereon a recording layer comprising hollow spherical beads dispersed in a hydrophilic binder, the beads having a mean diameter of about 0.2 .mu.m to about 1.5 .mu.m and a void volume of about 40% to about 90%.

Thermal recording element

Novel azo dye-providing compounds and photographic elements containing such compounds are described. The present compounds contain a carrier moiety which, as a function of oxidation under alkaline conditions, provides a substance having a mobility different than that of the starting compound.

Azo dye compounds and photographic materials

Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 2-(5-nitro-2-pyridylazo)-1-naphthol dye moiety. The compound contains a ballasted carrier moiety which is capable of releasing the diffusible azo dye under alkaline conditions. The dye is transferred imagewise to an image-receiving layer where it is contacted with metal ions to form a metal-complexed azo dye transfer image of excellent stability.

Photographic products and processes employing novel nondiffusible

Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a novel releasable azo dye. The dyes are azophenols, or precursors of azophenols, and have electron withdrawing groups in each of the positions ortho to the phenolic hydroxy group.

Photographic products and processes employing azo dyes, azo

Cyan azo dye-providing compounds having the formula ##STR1## wherein Car represents a carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye from said compound;

Cyan azo dye-providing compounds

A photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer and one of said layers having associated therewith a yellow image dye-releasing compound having a formula as follows ##STR1## wherein Car represents a sulfonamidophenol or sulfonamidonaphthol carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye from said compound. X represents a bivalent linking group of the formula --R.sup.1 --L.sub.n --R.sup.1.sub.p -- where each R.sup.1 can be the same or different and each represents alkylene phenylene; or substituted phenylene; L represents a bivalent radical selected from oxy, carbonyl, carboxamido, carbamoyl, sulfonamido, sulfamoyl, sulfinyl or sulfonyl; n is an integer having a value of 0 or 1; p is 1 when n equals 1 and p is 1 or 0 when n equals 0, provided that when p is 1 the carbon content of the sum of both R radicals does not exceed 14 carbon atoms; R represents hydrogen or alkyl; J represents a bivalent radical selected from sulfonyl or carbonyl; m and q each represent an integer having a value of 0 or 1; E represents hydrogen, halogen, alkyl or alkoxy; Z represents hydrogen or an electron withdrawing group selected from cyano, trifluoromethyl, alkylsulfonyl, substituted alkylsulfonyl, phenylsulfonyl, or substituted phenylsulfonyl; a carboxylic acid ester having the formula --COOR.sup.2 wherein R.sup.2 is alkyl, phenyl or substituted phenyl; sulfo, a sulfamoyl radical having the formula --SO.sub.2 NR.sup.3 R.sup.4 wherein R.sup.3 represents hydrogen or alkyl, and R.sup.4 represents hydrogen, alkyl, substituted alkyl; benzyl, phenyl, substituted phenyl; alkylcarbonyl, or phenylcarbonyl, with the proviso that the carbon content of the sum of R.sup.3 and R.sup.4 not exceed 14 carbon atoms; a carbamoyl radical having the formula --CON(R.sup.3).sub.2 wherein each R.sup.3 can be the same or different and is as described previously; and M represents hydrogen, a solubilizing group or precursor thereof selected from carboxy, sulfo, a sulfamoyl radical as described for Z or a carboxylic acid ester as described for Z.

Yellow azopyrazoline dye releasing redox compounds for photographic

A magenta image dye-providing compound having a formula as follows: ##STR1## wherein: Car represents a carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye from said compound;

Magenta image-providing phenylazonaphthyl dues containing a morpholinyl

Novel azo magenta dye-providing compounds and photographic elements containing such compounds are described. The present compounds contain a carrier moiety which, as a function of oxidation under alkaline conditions, provides a substance having a mobility different than that of the starting compound.

Diffusable dye-releasing compounds which are cleavable upon oxidation

Azo dye-providing compounds and photographic materials containing such compounds are described. The present compounds, as a function of photographic processing under alkaline conditions, provide a dye substance having a mobility different than that of the compound.

Photographic materials with ballasted, alkali cleavable azo dyes

A magenta image dye-providing compound having a formula as follows: ##SPC1## Wherein:

Magenta image-providing phenylazo-naphthyl dyes

Magenta image dye-providing compound having formulas as follows: ##SPC1## Wherein:

A nondiffusible sulfonamide compound which is alkali-cleavable upon oxidation to release a diffusible magenta color-providing moiety from a benzene nucleus thereof, said compound having a formula as follows: ##SPC1## Wherein

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Rochester, NY, United States of America

Richard A Landholm