Abstract: The present invention relates to an anthrapyridone compound represented by the following formula (1): wherein, n represents an integer number of 1 to 3, R1 represents a hydrogen atom, an alkyl group or the like, R2 represents a hydrogen atom or a methoxy group, R3 represents an anilino group having, as a substituent, at least one group selected from the group consisting of sulfo group, a carboxy group, an alkoxy group, a carbamoyl group, an cyano group, an alkyl group, an anilino group, a phenoxy group, an amino group, a hydroxy group and a mercapto group, an unsubstituted anilino group or the like, or a salt thereof, and provides a magenta coloring matter (compound) having high solubility in water and a hue and vividness which are suitable for inkjet recording and being excellent in fastnesses such as light fastness, moisture fastness and ozone gas fastness on recorded matter; and a magenta ink composition containing it.

Abstract: Disclosed is a reactive dye ink exhibiting excellent ejection stability when used in a printer having an inkjet head for commercial use which requires a high-viscosity ink. The reactive dye ink has excellent storage stability and excellent fixability to textiles. Specifically disclosed is an ink composition containing at least one reactive dye serving as a coloring matter, which also contains water and a compound represented by formula (1) and having an average molecular weight of 340-2,200. (1) [In the formula, X1, X2, X3 and X4 independently represent a hydrogen atom or a methyl group; and the sum of j, k, m and n is a number not less than 4 but not more than 40.

Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1) or a salt thereof; wherein, each of the rings A to D independently represents a benzene ring or a 6-membered nitrogen-containing heteroaromatic ring, at least one or more thereof is a benzene ring, at least one of the rest is a nitrogen-containing heteroaromatic ring, E represents alkylene, X is an anilino group having a substituent and the like, Y represents an amino group; a hydroxy group; a mono- or di-alkylamino group or a nitrogen-containing heterocyclic group which may have a substituent, excepting for the combination in which Y is an amino group or a hydroxy group and X is a substituted anilino group, b is 0 to 2.9, c is 0.1 to 3, and the sum of b and c is 1 to 3.

Abstract: The present invention relates to a novel anthrapyridone compound represented by the following formula (1) or a salt thereof: [wherein, R1 represents a hydrogen atom, an alkyl group or the like, R2 represents a hydrogen atom or a methoxy group and R3 represents an unsubstituted or substituted C5-C12 alkyl group, an unsubstituted or substituted aryl group, or an unsubstituted or substituted heteroaryl group, respectively; and with regard to the substitution positions of —SO2R3 and —SO3H whose substitution position are not specified and the both of which the benzene ring has thereon, one of their substitution positions is the para-position and the other thereof is the ortho-position to the substitution position of the nitrogen atom by which said benzene ring is substituted], and the compound of the present invention or a salt thereof has a hue which possesses high vividness suitable for inkjet recording, and provides a magenta coloring matter having higher fastnesses on recorded matter and excellent storage

Abstract: Dye-based ink formulations and methods of making dye-based ink formulations are disclosed.

Abstract: Anthrapyridone dyes of general formula (III) wherein X, R1, R2, R3, R4, M and n are as defined in the specification, are excellent magenta dyes for dying and printing cellulose containing materials and textile materials and, in particular, for the preparation of recording liquids for ink jet printing.

Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1) or a salt thereof [wherein, the rings A, B, C and D shown by broken lines each independently represent a 6-membered ring having aromaticity, at least 1.0 of said rings A to D is a benzene ring and at least 0.5 of them is a nitrogen-containing heteroaromatic ring, when shown as an average value; E represents an alkylene group; X and Y are each independently an anilino group having 1 to 3 carboxy groups; and b is 0 to 3.4, c is 0.1 to 3.5, and the sum of b and c is 1.0 to 3.5, when shown as an average value]. The present invention can provide a porphyrazine coloring matter suitable for inkjet recording, which has characteristics of having a good hue as cyan ink, excellent fastnesses, in particular, extremely excellent water fastness when printed on plain paper, and high solubility in water or a water-soluble organic solvent.

Abstract: The present invention is directed to ink-jet inks, ink sets, and methods of printing images. The ink-jet ink can comprise a cyan phthalocyanine dye, a divalent salt, an anti-flocculent aromatic polyamine, and a liquid vehicle. The cyan phthalocyanine dye can be susceptible to destabilization by the presence of the salt, and the anti-flocculent aromatic polyamine can be present at a concentration that stabilizes the cyan phthalocyanine dye in the presence of the divalent salt.

Abstract: A process for preparing colorants of the general formula (Ia), (Ib) or (Ic) or mixtures thereof, comprises reacting (a) tetracarboxylic acids or their functional derivatives with (b) at least one compound selected from i. aliphatic amines, ii. aromatic amines, iii. aliphatic diamines, iv. aromatic diamines, (c) optionally in the presence of further additives, (d) optionally in the presence of wetting agents in a mixing apparatus. These colorants are useful for coloration of macromolecular organic and inorganic materials of natural and synthetic origin.

Abstract: A water-soluble dye of the Formula (1): D1-L-D2 ??Formula (1) wherein D1 and D2 each independently is an anthrapyridone, anthrapyrazole, anthrapyrimidine or anthrapyrimidone group; and L is a single covalent bond or a linking group which permits at least partial delocalisation of electrons between D1 and D2, compositions and inks containing the dye, and printing processes, printed material and ink-jet printer cartridges based on use of the dye.

Abstract: The present invention relates to a novel anthrapyridone compound represented by the following formula (1) (wherein, R1 represents a hydrogen atom, an alkyl group and the like, R2 represents a hydrogen atom, an alkyl group, a phenyl group, a phenoxy group and the like, R3 represents a hydrogen atom, or a methoxy group, X represents an anilino group which may have a substituent such as a sulfonic acid group; a naphthylamino group which may be substituted by a sulfonic acid group; a mono- or di-alkylamino group which may have a substituent such as a sulfonic acid group; an aralkylamino group; a cycloalkylamino group; a phenoxy group which may have a substituent such as a sulfonic acid; a hydroxy group; an amino group; and the like, Y represents a chlorine atom; a hydroxy group; an amino group; and the like) in free acid form, an ink composition containing the same and a colored article using the same, and images recorded by an ink for inkjet recording containing said compound have high vividness and exhibit

Abstract: The present invention relates to a novel anthrapyridone compound represented by the following formula (1) or a salt thereof and provides a magenta coloring matter having a very vivid hue suitable for inkjet recording, being strong in fastnesses of recorded matters, and having an excellent storage stability: wherein, R1 represents a hydrogen atom, an alkyl group and the like, R2 represents a hydrogen atom or a methoxy group, and R3 represents an alkyl group which may have an aryl group, a heterocycle group, a sulfonic acid group, a carboxy group, an alkoxycarbonyl group, an acyl group, a carbamoyl group, a cyano group, an alkoxy group, a phenoxy group, a hydroxy group, a nitro group and the like on the alkyl group and further may have a substituent on the aryl group and the heterocycle group respectively.

Abstract: The present invention relates to a cyan dye donor element for thermal transfer imaging comprising a support having thereon a dye layer comprising a mixture of at least two cyan dyes dispersed in a polymeric binder, wherein at least one of the at least two cyan dyes is a light stabilizing dye represented by Formula I and a thermal image recording method utilizing the same cyan dye donor element. The present invention also relates to a cyan inkjet dye comprising a light stabilizing cyan dye represented by Formula I.

Abstract: An ink cartridge for an inkjet printer contains an aqueous ink formulation. The ink formulation comprising an IR-absorbing naphthalocyanine dye of formula (II): or a salt form thereof, wherein: M is Ga(A1); A1 is an axial ligand selected from —OH, halogen, —OR3, —OC(O)R4 or —O(CH2CH2O)eRe wherein e is an integer from 2 to 10 and Re is H, C1-8 alkyl or C(O)C1-8 alkyl; R1 and R2 may be the same or different and are selected from hydrogen or C1-12 alkoxy; R3 is selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl or Si(Rx)(Ry)(Rz); R4 is selected from C1-12 alkyl, C5-12 aryl or C5-12 arylalkyl; and Rx, Ry and Rz may be the same or different and are selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl, C1-12 alkoxy, C5-12 aryloxy or C5-12 arylalkoxy. The ink formulation has a characteristic pH in the range of 4 to 6.5.

Abstract: To provide inks and ink sets for inkjet recording, which have good fastness and good jet-out stability and which give good images with no bleeding trouble, yellow ink, black ink and magenta ink for inkjet printing contain at least two dyes each having an oxidation potential over 1.0 V (vs SCE).

Abstract: An ink set containing at least a yellow ink composition, a magenta ink composition, and a cyan ink composition: said magenta ink composition containing as a colorant at least one type of compound expressed by the formula M-1 in claim 1, and at least one type of compound expressed by the following formula M-2 in claim 1, the yellow ink composition containing as a colorant at least one type of compound expressed by the formula Y-1 in claim 1; and the cyan ink composition containing as a colorant at least one type of compound selected from the group consisting of compounds or salts thereof expressed by the Formula C-1 in claim 1.

Abstract: An inkset comprising at least a yellow ink composition, two types of magenta ink compositions of different color density, and a cyan ink composition: the magenta ink composition containing as a colorant at least one type of compound expressed by the formula M-1, and at least one type of compound expressed by the formula M-2, the yellow ink composition containing as a colorant at least one type of compound expressed by the formula Y-1 the cyan ink composition containing as a cyan dye at least one type of compound selected from the compounds or salt thereof expressed by the formula C-1.

Abstract: An ink set including at least a yellow ink composition, a magenta ink composition, and a cyan ink composition; the magenta ink composition containing as a colorant at least one type of compound expressed by the Formula M-1 in claim 1; the yellow ink composition containing as a colorant at least one type of compound expressed by the formula Y-1 in claim 1; and the cyan ink composition containing as a colorant at least one type of compound selected from the group consisting of compounds or salts thereof expressed by the Formula C-1 in claim 1.

Abstract: The present invention relates to an anthrapyridone compound represented by the following Formula (1) wherein, R represents a hydrogen atom, an alkyl group, a hydroxy lower alkyl group, a cyclohexyl group, a mono- or dialkylaminoalkyl group or a cyano lower alkyl group, X represents a cross linking group, Y represents a phenoxy group having 1 or 2 carboxyl groups in free acid form and a magenta ink composition comprising the same, and provides magenta coloring matter and a magenta ink composition which have hue with high vividness suitable for inkjet recording, gives good fastness to a recorded article and are excellent in storage stability.

Abstract: A self-dispersible bipyridine-based metal complex includes a bipyridine-based ligand and a metal, and an ink composition including the metal complex. The bipyridine-based metal complex may be self-dispersed without requiring a dispersing agent and may be used as a colorant per se. Furthermore, the metal complex, when binding with a common colorant, may produce various colors and exhibit enhanced durability including light resistance. In addition, the metal complex includes a hydrophilic group-containing ligand coordinating with the metal, in addition to the bipyridine-based ligand, and thus, has a bulky structure. Therefore, dispersion stability is enhanced by a self-dispersion system based on a steric hindrance due to the bulky structure of the metal complex and an electrostatic repulsive force between the charged metal and the hydrophilic group-containing ligand, thus enhancing a long-term storage stability.

Abstract: An inkjet ink contains at least one coloring material selected from the group of C. I. Direct Violet 107, C. I. Acid Red 14, C. I. Acid Red 52, C. I. Acid Red 87, C. I. Acid Red 289 and C. I. Reactive Red 180, and a coloring material including a compound expressed by general formula (I): wherein in the formula (I), each M independently represents hydrogen, an alkali metal, ammonium, or an organic ammonium. The ratio of the content in the inkjet ink of the compound expressed by general formula (I) to the total content of coloring materials in the inkjet ink is in the range of 15.0% by mass or more to 40.0% by mass or less.

Abstract: A multi-color inkjet ink set includes a first ink composition including a first colorant and a heterocyclic amine compound, and a second ink composition include a second colorant having an, in which the acid moiety of the second colorant within the second ink composition reacts with the heterocyclic amine compound within the first ink composition to form a precipitate to prevent the second colorant from moving on a printing medium.

Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1) or a salt thereof; (wherein, each of the rings A to D independently represents a benzene ring or a 6-membered nitrogen-containing heteroaromatic ring, at least one or more thereof is a benzene ring, at least one of the rest is a nitrogen-containing heteroaromatic ring, E represents alkylene, X is an anilino group having a substituent and the like, Y represents an amino group; a hydroxy group; a mono- or di-alkylamino group or a nitrogen-containing heterocyclic group which may have a substituent, excepting for the combination in which Y is an amino group or a hydroxy group and X is a substituted anilino group, b is 0 to 2.9, c is 0.1 to 3, and the sum of b and c is 1 to 3).

Abstract: An image forming material includes a perimidine-substituted squarylium dye that has a structure represented by the following formula (I) and shows diffraction peaks at least at Bragg angles (2?±0.2°) of 17.7°, 19.9°, 22.1°, 23.2° and 24.9° in its X-ray powder diffraction spectrum measured by irradiation with X rays generated from a Cu target with a wavelength of 1.

Abstract: The present invention relates to a novel anthrapyridone compound represented by the following formula (1) or a salt thereof, and can provide a magenta coloring matter having a highly vivid hue suitable for inkjet recording, a high fastness to recorded matters, and an excellent storage stability; wherein R1 represents a benzyl group wherein the phenyl group of the benzyl group may be further substituted by a methyl group, a chlorine atom or a nitro group, 1-naphthylmethyl group or the like, and R2 represents a hydrogen atom, an alkyl group or the like, respectively.

Abstract: A self-dispersible colorant has a hydrophilic group incorporated into a colorant. A method of preparing the self-dispersible colorant reacts a cyclic anhydride with a reactive colorant in the presence of a Lewis acid. An ink composition comprising the self-dispersible colorant provides long-term storage stability and dispersion stability.

Abstract: The present invention relates to an anthrapyridone compound represented by the following formula (1): wherein, R represents a hydrogen atom, an alkyl group, a hydroxy lower alkyl group, a cyclohexyl group or a (mono- or di-alkylamino) alkyl group, X represents a cross-linking group represented by the formula: —NH—(CH2)n-NH—??(201) wherein, n is 2 to 8 and another cross-linking group, respectively or a salt thereof, a magenta ink composition containing the anthrapyridone compound, and a colored product therewith; said compound has a hue having a high vividness suitable for inkjet recording, a recorded matter therewith has strong fastnesses particularly such as light fastness and ozone fastness, and the ink composition has an excellent storage stability, whereby said compound is useful as a magenta coloring matter suitable for inkjet recording.

Abstract: An azo dye represented by formula (II) as defined in the specification, a process of producing the same and a coloring composition containing the azo dye.

Abstract: A mixture of compounds of Formula (1) and salts thereof: wherein: M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula; R1 is H or optionally substituted C1-4alkyl; R2 is optionally substituted alkyl; R3 is H or optionally substituted C1-4alkyl; R4 is optionally substituted heterocycyl; L is a direct covalent bond or a divalent linking group; w, x, y and z are each independently greater than zero. Also compositions and inks, printing processes, printed material and ink-jet printer cartridges.

Abstract: The present invention relates to an ammonium salt or a sodium salt of an anthrapyridone compound represented by the following the formula (1): and an ink composition containing these; said compound has a hue with high vividness and high brightness suitable for inkjet recording; recorded matters recorded with an ink composition containing said compound is excellent in fastnesses such as light fastness and ozone fastness, and also particularly water fastness.

Abstract: An ink for use in combination with an ink-jet printer comprises a mixture including a colorant, a liquid vehicle comprising 1,6-hexanediol and 1,5-pentanediol in a ratio in the range of 1:4 (wt/wt) to 4:1 (wt/wt), and/or an amount of imidazole in the range of 0.1 wt % to 6 wt %, and potentially provides at least one of the following enhancements to the ink improved print quality, increased decap time, pen reliability, environmental robustness of ink in pen, environmental robustness of printed ink on media, and aid in maintaining the pH of the ink in a desired range.

Abstract: An ink composition having a high optical density, can implement a clear color image and improve the durability of printed images, such as waterproofness, lightfastness, gasfastness, environmental resistance, etc., having excellent storage stability, and does not cause clogging of nozzles of a cartridge of an inkjet printer even after being stored for a long-term. An inkjet printer cartridge including the ink composition, and an inkjet recording apparatus including the cartridge.

Abstract: Compounds of Formula (1) and salts thereof: wherein: M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula; R1 is optionally substituted alkyl other than methyl: R2 is H, optionally substituted alkyl or optionally substituted aryl; R3 is H, optionally substituted alkyl or optionally substituted aryl; R4 is a group comprising a heterocycle and an ionisable group; L is a direct bond or a divalent linking group; x is 0.1 to 3.8; y is 0.1 to 3.8; and z is 0.1 to 3.8. Also compositions, inks, printed material and in-jet processes and cartridges.

Abstract: The present invention relates to an anthrapyridone compound represented by the following Formula (1) (wherein, R represents a hydrogen atom, an alkyl group, a hydroxy lower alkyl group, a cyclohexyl group, a mono- or dialkylaminoalkyl group or a cyano lower alkyl group, X represents a cross linking group, Y represents a phenoxy group having 1 or 2 carboxyl groups) in free acid form and a magenta ink composition comprising the same, and provides magenta coloring matter and a magenta ink composition which have hue with high vividness suitable for inkjet recording, gives good fastness to a recorded article and are excellent in storage stability.

Abstract: An inkjet ink contains at least one coloring material selected from the group of C. I. Direct Violet 107, C. I. Acid Red 14, C. I. Acid Red 52, C. I. Acid Red 87, C. I. Acid Red 289 and C. I. Reactive Red 180, and a coloring material including a compound expressed by general formula (I): wherein in the formula (I), each M independently represents hydrogen, an alkali metal, ammonium, or an organic ammonium. The ratio of the content in the inkjet ink of the compound expressed by general formula (I) to the total content of coloring materials in the inkjet ink is in the range of 15.0% by mass or more to 40.0% by mass or less.

Abstract: The present invention relates to an anthrapyridone compound represented by the following formula (1): [wherein, R represents a hydrogen atom, an alkyl group, a hydroxy lower alkyl group, a cyclohexyl group or a (mono- or di-alkylamino) alkyl group, X represents a cross-linking group represented by the formula: —NH—(CH2)n-NH—??(201) (wherein, n is 2 to 8) and another cross-linking group, respectively] or a salt thereof, an magenta ink composition containing the anthrapyridone compound, and a colored product therewith; said compound has a hue having a high vividness suitable for inkjet recording, a recorded matter therewith has strong fastnesses particularly such as light fastness and ozone fastness, and the ink composition has an excellent storage stability, whereby said compound is useful as a magenta coloring matter suitable for inkjet recording.

Abstract: The present invention provides an ink jet ink having a magenta color which gives an image excellent in magenta color tone and also excellent in image fastness (lightfastness and gas resistance). The ink jet ink includes a first coloring material that is an anthrapyridone compound having a structure represented by general formula (I) and/or general formula (II) and a second coloring material that is an azo compound having a structure represented by general formula (III), wherein the mass ratio of the content of the first coloring material to the content of the second coloring material is from 2.5 or more to 10.0 or less.

Abstract: It is an object to provide an ink that forms an image which is superior in color developability, has high environmental gas resistance, and further has superior bronze resistance. The ink comprising at least a coloring material is wherein the coloring material comprises a compound represented by a following general formula (I) or a salt thereof; the coloring material comprises a compound represented by a following general formula (I) or a salt thereof; and the maximum absorption wavelengths obtained by measuring an absorbance of a liquid prepared by diluting 2,000 times the ink with 90 mass % of N,N-dimethylformamide aqueous solution are respectively in a range of 580 nm or more and 640 nm or less and in a range of 650 nm or more and 700 nm or less; and a ratio B/A of 0.75 or more and 0.

Abstract: An ink having a cyan color is provided which can form images excellent in ozone resistance in such a high level as to exceed anticipation and having a preferable color tone. The ink includes at least two coloring materials of a first coloring material and a second coloring material, wherein the first coloring material is a compound having a copper phthalocyanine skeleton with a specific structure and the second coloring material is a compound having a copper phthalocyanine skeleton with a specific structure that is different from the first coloring material.

Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1): (wherein, A, B, C and D independently represent a 6-membered ring having aromaticity, at least one or more of them are benzene rings and at least one or more of them contain nitrogen-containing heteroaromatic rings; E represents alkylene, X is a substituted anilino group and have at least one or more of sulfo group, carboxy group and phosphono group as a substituent, Y represents a hydroxy group or an amino group, b is respectively 0 to 2.9, c is 0.1 to 3, and the sum of b and c is 1 to 3) in free acid form, which is suitable for inkjet recording because it has good hue as a cyan ink, is excellent in light fastness, ozone fastness and moisture fastness, and does not cause bronzing phenomenon.

Abstract: The present invention relates to a time temperature indicator for indicating temperature change over time, comprising an immobilized enzyme and a substrate of the enzyme, wherein the reaction of the substrate catalyzed by the enzyme produces a reaction product in a time and temperature dependent manner and wherein the formation of the reaction product can be detected by monitoring a physical characteristic of the substrate and/or the product which is linked to its concentration. The invention further relates to a method of time temperature indication comprising the step of an enzyme-catalyzed reaction, a method of printing the enzyme-based time temperature indicator on a packaging material or a label, a printing ink or printing ink concentrate comprising components of the enzyme-based time temperature indicator and a packaging material or a label comprising the enzyme-based time temperature indicator.

Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1): (wherein, A, B, C and D independently represents a 6-membered ring having aromaticity, at least one or more is a benzene ring, at least one or more contains a nitrogen-containing heteroaromatic ring; in addition, E represents alkylene and each of X and Y independently represents a substituted or unsubstituted anilino group or a substituted or unsubstituted naphthylamino group; and b is 0 to 2.9, c is 0.1 to 3 and the sum of b and c is 1 to 3) which has a good hue as a cyan ink, is excellent in light fastness, ozone fastness and moisture fastness, and does not cause bronze phenomenon, as well as is thus suitable for inkjet recording.

Abstract: The present invention relates to a novel ink composition and, more particularly, to an ink composition for digital textile printing, which is suitable for ink-jet printing on cellulose fiber materials. The novel ink composition of the present invention has stable pH value, fine storage stability, smoothness and ease in printing, and reduction in color deterioration.

Abstract: A substrate having an IR-absorbing dye disposed thereon.

Abstract: A mixture of dyes of Formula (1) and salts thereof: wherein: M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula R1 and R2 independently are H or optionally substituted C1-4alkyl; L is a divalent linking group; B is a substituent. x is 0.1 to 3.8; y is 0.1 to 3.8; z is 0.1 to 3.8; the sum of (x+y+z) is 2 to 4; and the substituents, represented by x, y and z, are only attached to a ? position on the phthalocyanine ring and the dyes are free from fiber reactive groups. Also novel compositions and ink-jet printer inks, processes and cartridges.

Abstract: A mixture of dyes of Formula (1) and salts thereof; wherein M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula (2); R1 is methyl; R2 is H or methyl; R3 and R4 independently are H or optionally substituted C1-4alkyl; L is a divalent linking group; A and B are independently H or a substituent. x is 0.1 to 3.8; y is 0.1 to 3.8; z is 0.1 to 3.8; the sum of (x+y+z) is 2 to 4; and the substituents, represented by x, y and z, are only attached to a ? position on the phthalocyanine ring and the dyes are free from fiber reactive groups. Also compositions, inks, printed material and in-jet processes and cartridges.

Abstract: A mixture of dyes of Formula (1) and salts thereof: wherein: Pc represents a phthalocyanine nucleus of formula x is 1 to 2; y is 0.1 to 2.9; z is 0.1 to 1; the sum of (x+y+z) is 2 to 4; and the substituents, represented by x, y and z, are only attached to a ? position on the phthalocyanine ring and the dye s are free from fibre reactive groups. Also novel compositions and inkjet printer inks, processes and cartridges.

Abstract: A salt of a sulfonated dye modulates a stability of the dye, particularly its ozonefastness. The salt comprises an organic cation selected from the group consisting of: a first organic cation having a positive charge delocalized between a nitrogen atom and at least one other heteroatom; a second organic cation having a positive charge delocalized between a nitrogen atom and at least two other atoms; and a third organic cation of formula (A): wherein: Rp, Rq and Rr are each independently selected from a C1-6 alkyl group; s is 0, 1, 2 or 3; and Ar is a C6-12 aryl group or C3-12 heteroaryl group.

Abstract: A fixer fluid for an inkjet ink set includes an aqueous vehicle, and a tri-alkyl-substituted amine-N-oxide. The fixer fluid also includes an acid, a cationic polyelectrolyte, or combinations of the acid and polyelectrolyte(s).

Abstract: A phthalocyanine dye of formula (I) is provided: wherein: M is a metal group or is absent; n is 1 or 2; X is selected from —CHR3—, —NR3—, —O— or —S—; R1, R2 and R3 are independently selected from hydrogen, C1-8 alkyl, C1-8 alkoxy, carboxy, carboxy-C1-8 alkyl, hydroxyl, hydroxy-C1-8 alkyl; or R1 and R2, or R2 and R3 together are joined to form a C4-12 aryl or C3-12 heteroaryl group, optionally substituted with 1, 2, 3 or 4 substituent groups, the or each substituent group being independently selected from C1-12 alkyl, C1-12 alkoxy, phenyl-C1-8 alkyl, phenyl-C1-8 alkoxy, —(OCH2CH2)dORd, cyano, halogen, amino, hydroxyl, thiol, —SRv, —NRuRv, nitro, phenyl, phenoxy, —CO2Rv, —C(O)Rv, —OCORv, —SO2Rv, OSO2Rv, —NHC(O)Rv, —CONRuRv, —CONRuRv, sulfonic acid, sulfonic acid salt and sulfonamide; d is an integer from 2 to 5000; Rd is H, C1-8 alkyl or C(O)C1-8 alkyl and Ru and Rv are independently selected from hydrogen, C1-12 alkyl, phenyl or phenyl-C1-8 alkyl.