Abstract: A process for alleviating bleed and improving color in printed elements comprises applying an anionic printing liquid and a cationic printing liquid to a substrate adjacent to one another, wherein at least one of the printing liquids contains a polymer and reacting the anionic and cationic printing liquids with one another; wherein the color integrity of the anionic and cationic printing liquids is maintained.

Abstract: A process for alleviating bleed and improving color in printed elements comprises applying an anionic printing liquid and a cationic printing liquid to a substrate adjacent to one another, wherein at least one of the printing liquids contains a polymer and reacting the anionic and cationic printing liquids with one another; wherein the color integrity of the anionic and cationic printing liquids is maintained.

Abstract: Ink jet ink compositions consisting essentially of an aqueous carrier medium; an anionic dye; and an anionic polymer have excellent decap and puddling behavior and may be used with a variety of ink jet printers such as continuous, piezoelectric, drop-on-demand and thermal or bubble jet drop-on-demand, and are particularly adapted for use in thermal ink jet printers.

Abstract: Aqueous ink compositions containing anti-curl agents substantially reduce or eliminate paper curl in plain-paper printed elements without adversely effecting storage stability, decap properties or print quality, and thus eliminate the need for expensive and bulky mechanical curl-arresting devices or special curl-resistant substrates. Printing the inks on plain-paper substrates is the sole step in a process for reducing paper curl in plain-paper printed elements.

Abstract: An aqueous ink jet ink comprises an aqueous carrier medium, a colorant and at least one alkylpolyol ether cosolvent selected from the group of alkyl-bis-oxyalkyldiols, olefinic oxyalkyl diols, alkyl-tris-oxyalkyldiols and alkyl-tetrakis-oxyalkyldiols exhibit rapid drying, excellent image definition, are storage stable, have low odor and have excellent decap properties.

Abstract: Aqueous ink jet ink compositions comprising an aqueous carrier medium, a colorant, and cosolvents which are selected amide, sulfonamide, urea and thiourea derivatives of polyoxyalkyleneamines having a solubility in water of at least 4.5% at 25.degree. C., have high optical density, excellent print quality, excellent dispersion stability, and resist film formation on resistors without adversely affecting decap time or crusting.

Abstract: Ink compositions for ink jet printers comprise an aqueous carrier medium, pigment dispersion or dye and a selected amide or lactam penetrant having a solubility in water of at least 4.5% at 25.degree. C. and 5-10 carbon atoms exhibit rapid drying, excellent storage stability and have excellent crusting properties.

Abstract: A pigmented ink for ink jet printers which comprises an aqueous carrier medium, pigment particles dispersed in an AB or BAB block copolymer having a hydrophilic segment and a segment that links to the pigment, and an effective amount of a surfactant sufficient to decrease the drying time of the ink. The A block and the B block(s) have molecular weights of at least 300. These inks give images having good print quality, water and smear resistance, lightfastness, and storage stability.

Abstract: An ink for ink jet printers which comprises an aqueous carrier medium, pigment dispersion or dye and a nitrogen heterocyclic diol cosolvent which retards or inhibits pluggage failure. The cosolvent has a solubility in water of at least 4.5 parts in 100 parts of water at 25.degree. C. The pigment dispersion consists of pigment particles and a polymeric dispersant, having a hydrophilic segment and a segment that links to the pigment. These inks exhibit excellent decap performance, are storage stable and give images having excellent print quality.

Abstract: An ink for ink jet printers which comprises an aqueous carrier medium, pigment dispersion or dye and a polyol/alkylene oxide condensate cosolvent which eliminates film formation on thermal ink jet resistor surfaces thereby eliminating non-uniformity in optical density. The cosolvent present at least 5% has a solubility in water of at least 4.5 parts in 100 parts of water at 25.degree. C. and a general formula: ##STR1## wherein X=--H or --CH.sub.3 ;R=--H, --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7, --C.sub.4 H.sub.9, or --CH.sub.2 O(CH.sub.2 CH.sub.2 O).sub.e H;b=0 or 1,a+d+f(c+e)=2-100; andf=1-6, the cosolvent being present in the amount of at least 4.5% based on the total weight of the ink jet ink composition. These inks exhibit freedom from thermal resistor film formation, have excellent decap performance, are storage stable and give images having excellent print quality.

Abstract: Aqueous ink jet ink compositions comprising an aqueous carrier medium, a colorant, such as a pigment dispersion or dye, and a nitrogen-containing organic cosolvent having a solubility in water of at least 4.5 % at 25.degree. C., exhibit freedom from plug formation and excellent storage stability.

Abstract: An ink for ink jet printers which comprises an aqueous carrier medium, pigment dispersion or dye and a cosolvent which retards or inhibits pluggage failure. The latter is an cycloaliphatic diol having a total of at least 6 carbon atoms and having a solubility in water of at least 4.5 parts in 100 parts of water at 25.degree. C.The pigment dispersion consists of pigment particles and a dispersant, preferably a polymeric dispersant, having a hydrophilic segment and a segment that links to the pigment. These inks exhibit long decap times, are storage stable, have reliable performance and give images having good print quality.

Abstract: Aqueous ink jet ink compositions comprising an aqueous carrier medium, a colorant and a sulfoxide or sulfone penetrant having a solubility in water of at least 4.5% at 25.degree. C. and represented by the formula:H(CH.sub.2).sub.a S(O).sub.n (CH.sub.2).sub.b Hwhereina+b=5-8, andn=1-2;exhibit rapid drying, excellent image definition, are storage stable and have excellent decap properties.

Abstract: An ink for ink jet printers which comprises an aqueous carrier medium, pigment dispersion or dye and an amide diol or ester diol cosolvent penetrant such as hydroxypivalyl hydroxypivalate. The cosolvent penetrant has a solubility in water of at least 4.5 parts in 100 parts of water at 25.degree. C.The pigment dispersion consists of pigment particles and a dispersant, preferably a polymeric dispersant, having a hydrophilic segment and a segment that links to the pigment. These inks exhibit rapid drying, have excellent decap performance, are storage stable and give images having good print quality.

Abstract: An ink for ink jet printers which comprises an aqueous carrier medium, pigment dispersion or dye and a diol penetrant. The latter is an aliphatic diol having at least 6 carbon atoms, a solubility in water of at least 4.5 parts in 100 parts of water at 25.degree. C. and is selected from the group consisting essentially of:(1) compounds wherein at least 2 carbon atoms are attached as substituents to the main chain, and(2) Hexene [1,2-]diols.The pigment dispersion consists of pigment particles and a dispersant, preferably a polymeric dispersant having a hydrophilic segment and a segment that links to the pigment. These inks exhibit rapid drying, are storage stable, have reliable performance and give images having good print quality.

Abstract: A pigmented ink for ink jet printers which comprises an aqueous carrier medium, and pigment particles dispersed in an AB or BAB block copolymer having a hydrophilic segment and a segment that links to the pigment. The A block and the B block(s) have molecular weights of at least 300. These inks give images having good print quality, water and smear resistance, lightfastness, and storage stability.

Abstract: This invention relates to non-electroscopic prolonged tack toners for transferring toned images to an image receptor at low temperatures in the range from 20.degree. C. to 70.degree. C.

Abstract: This invention concerns a method for color development of a surface having imagewise tacky and nontacky image areas which comprises(a) applying a dry nonelectroscopic toner to the image-bearing surface;(b) distributing the toner particles over the image surface whereby the distributed toner particles become embedded solely in the tacky image areas; and(c) physically removing toner particles from the nontacky areas which are left substantially free of the toner particles, the improvement wherein high resolution images having higher toned optical density with improved color purity are obtained using a dry nonelectroscopic humidity resistant toner having a size distribution within the range from about 0.2 micron to about 10 microns, not more than 10% of the toner being below 0.

Abstract: A dry nonelectroscopic toner surface coated with 3 to 40% by weight of an organofunctional substituted fluorocarbon compound. Toners of the invention are useful for developing photosensitive elements having imagewise tacky and complementary nontacky image areas. The surface coating imparts good toning and clean-up characteristics, together with improved performance on aging.

Abstract: An improved process for preparing negative images from a photohardenable tonable element, wherein the unexposed photohardenable tonable element is tacky in a preselected temperature range, T.sub.1 -T.sub.2, in which temperature range the exposed photosensitive tonable element is nontacky but wherein the exposed element is retackifiable at elevated temperatures above T.sub.2. After imagewise exposure the unexposed areas have a colorless toning material applied to them at a temperature within the range T.sub.1 -T.sub.2 to make them nontacky at temperatures of at least up to T.sub.3, which is greater than T.sub.2. After heating to an elevated temperature above T.sub.2 but less than T.sub.3 the exposed areas have a contrasting toning material applied to them to give a negative or reverse image.