US5882390A — Recording ink composition and recording method us…

Claim 1

Independent Claim 285 words

A recording ink composition comprising: a colorant which is soluble or dispersible in water and comprises at least one phthalocyanine compound represented by formula (1), ##STR18## wherein M is a hydrogen atom, Cu, Fe, Co or Ni, X is a halogen atom, and p is an integer of 0 to 8; and at least one phthalocyanine compound selected from the group consisting of compounds represented by formulas (2) and (3), ##STR19## wherein M is a hydrogen atom, Cu, Fe, Co or Ni; A is a phenylene group or a straight-chain or branched alkylene group having 1 or more carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation, and alkanolamine cation, and q is an integer of 0 to 4, and r is an integer of 0 to 8, provided that q and r cannot be 0 (zero) at the same time; and ##STR20## wherein M is a hydrogen atom, Cu, Fe, Co or Ni, A is a phenylene group or a straight-chain or branched alkylene group having 1 or more carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation, and alkanolamine cation, and s is an integer of 0 to 4, and t is an integer of 0 to 4, provided that s and t cannot be 0 (zero) at the same time; a dispersant comprising at least one dispersant component selected from the group consisting of at least one polymeric compound having a hydrophilic moiety and a hydrophobic moiety, and at least one surfactant having an alkyl group having 5 or more carbon atoms; water; and a humectant.

Claim 2

Dependent Claim 285 words

A recording ink composition comprising: a colorant which is soluble or dispersible in water and comprises at least one phthalocyanine compound represented by formula (1), ##STR18## wherein M is a hydrogen atom, Cu, Fe, Co or Ni, X is a halogen atom, and p is an integer of 0 to 8; and at least one phthalocyanine compound selected from the group consisting of compounds represented by formulas (2) and (3), ##STR19## wherein M is a hydrogen atom, Cu, Fe, Co or Ni; A is a phenylene group or a straight-chain or branched alkylene group having 1 or more carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation, and alkanolamine cation, and q is an integer of 0 to 4, and r is an integer of 0 to 8, provided that q and r cannot be 0 (zero) at the same time; and ##STR20## wherein M is a hydrogen atom, Cu, Fe, Co or Ni, A is a phenylene group or a straight-chain or branched alkylene group having 1 or more carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation, and alkanolamine cation, and s is an integer of 0 to 4, and t is an integer of 0 to 4, provided that s and t cannot be 0 (zero) at the same time; a dispersant comprising at least one dispersant component selected from the group consisting of at least one polymeric compound having a hydrophilic moiety and a hydrophobic moiety, and at least one surfactant having an alkyl group having 5 or more carbon atoms; water; and a humectant.

Claim 3

Dependent Claim 34 words

The recording ink composition as claimed in claim 1, wherein said phthalocyanine compound of formula (1) is in the form of particles with a particle diameter in a range of 0.01 to 0.1 μm.

Claim 4

Dependent Claim 218 words

The recording ink composition as claimed in claim 1, wherein, in formulas (2) and (3), said alkali metal cation represented by M + is selected from the group consisting of Na + and Li + ; said quaternary ammonium cation represented by M + is represented by formula (4-a): ##STR21## wherein R 1 to R 4 each is selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and a halogenated alkyl group having 1 to 4 carbon atoms; said alkanolamine cation represented by M + is a cation represented by formula (4-b): ##STR22## wherein at least one of R 11 to R 14 is a hydroxyalkyl group having 1 to 4 carbon atoms, and the other is selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and a halogenated alkyl group having 1 to 4 carbon atoms; and said quaternary phosphonium cation represented by M + is a cation represented by formula (4-c): ##STR23## wherein R 21 to R 24 each is selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group having 1 to 4 carbon atoms, and a halogenated alkyl group having 1 to 4 carbon atoms.

Claim 5

Dependent Claim 141 words

The recording ink composition as claimed in claim 1, wherein said surfactant having an alkyl group having 5 or more carbon atoms comprises an anionic surfactant selected from the group consisting of: a polyoxyethylene alkyl ether acetate of formula (5), R.sup.5 --O--(CH.sub.2 CH.sub.2 O).sub.m CH.sub.2 COO.sup.- M.sup.+( 5) wherein R 5 is a straight-chain or branched alkyl group having 6 to 14 carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation and alkanolamine cation, and m is an integer of 3 to 12; and a dialkylsulfosuccinate of formula (6), ##STR24## wherein R 6 is a branched alkyl group having 5 to 7 carbon atoms, and M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation and alkanolamine cation.

Claim 6

Dependent Claim 21 words

The ink composition as claimed in claim 4, wherein said ink composition has a surface tension of 50 mN/m or less.

Claim 7

Dependent Claim 218 words

The recording ink composition as claimed in claim 4, wherein, in formulas (5) and (6), said alkali metal cation represented by M + is selected from the group consisting of Na + and Li + ; said quaternary ammonium cation represented by M + is represented by formula (4-a): ##STR25## wherein R 1 to R 4 each is selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and a halogenated alkyl group having 1 to 4 carbon atoms; said alkanolamine cation represented by M + is a cation represented by formula (4-b): ##STR26## wherein at least one of R 11 to R 14 is a hydroxyalkyl group having 1 to 4 carbon atoms, and the other is selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and a halogenated alkyl group having 1 to 4 carbon atoms; and said quaternary phosphonium cation represented by M + is a cation represented by formula (4-c): ##STR27## wherein R 21 to R 24 each is selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group having 1 to 4 carbon atoms, and a halogenated alkyl group having 1 to 4 carbon atoms.

Claim 8

Dependent Claim 81 words

The recording ink composition as claimed in claim 1, wherein said surfactant having an alkyl group having 5 or more carbon atoms comprises a nonionic surfactant selected from the group consisting of: a compound of formula (7), ##STR28## wherein R is a straight or branched hydrocarbon chain having 6 to 14 carbon atoms, and k is an integer of 5 to 12; and a compound of formula (8), ##STR29## wherein m and n are each an integer of 0 to 20.

Claim 9

Dependent Claim 23 words

The recording ink composition as claimed in claim 7, wherein said recording ink composition has a surface tension of 50 mN/m or less.

Claim 10

Dependent Claim 25 words

The recording ink composition as claimed in claim 7, further comprising at least one component selected from the group consisting of urea and urea derivatives.

Claim 11

Dependent Claim 18 words

The recording ink composition as claimed in claim 1, wherein said humectant comprises at least one pyrrolidone derivative.

Claim 12

Dependent Claim 21 words

The recording ink composition as claimed in claim 1, wherein said recording ink composition is adjusted to pH 6 to 11.

Claim 13

Independent Claim 368 words

A method of recording images on an image receiving medium, comprising the step of ejecting a recording ink composition in the form of droplets by the application of thermal or mechanical energy thereto onto an image receiving medium with a Stockigt size degree of 3 seconds or more, with said recording ink composition being deposited in an amount of 20 pl/mm 2 to 200 pl/mm 2 on said image receiving medium, thereby forming images with a resolution of 10 dots/mm×10 dots/mm or more, said recording ink composition comprising: a colorant which is soluble or dispersible in water and comprises at least one phthalocyanine compound represented by formula (1), ##STR30## wherein M is a hydrogen atom, Cu, Fe, Co or Ni, X is a halogen atom, and p is an integer of 0 to 8; and at least one phthalocyanine compound selected from the group consisting of compounds represented by formulas (2) and (3), ##STR31## wherein M is a hydrogen atom, Cu, Fe, Co or Ni; A is a phenylene group or a straight-chain or branched alkylene group having 1 or more carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation, and alkanolamine cation, and q is an integer of 0 to 4, and r is an integer of 0 to 8, provided that q and r cannot be 0 (zero) at the same time; and ##STR32## wherein M is a hydrogen atom, Cu, Fe, Co or Ni, A is a phenylene group or a straight-chain or branched alkylene group having 1 or more carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation, and alkanolamine cation, and s is an integer of 0 to 4, and t is an integer of 0 to 4, provided that s and t cannot be 0 (zero) at the same time; a dispersant comprising at least one dispersant component selected from the group consisting of at least one polymeric compound having a hydrophilic moiety and a hydrophobic moiety, and at least one surfactant having an alkyl group having 5 or more carbon atoms; water; and a humectant.

Claim 14

Independent Claim 368 words

A method of recording images on an image receiving medium, comprising the step of ejecting a recording ink composition in the form of droplets by the application of thermal or mechanical energy thereto onto an image receiving medium with a Stockigt size degree of 3 seconds or more, with said recording ink composition being deposited in an amount of 20 pl/mm 2 to 200 pl/mm 2 on said image receiving medium, thereby forming images with a resolution of 10 dots/mm×10 dots/mm or more, said recording ink composition comprising: a colorant which is soluble or dispersible in water and comprises at least one phthalocyanine compound represented by formula (1), ##STR30## wherein M is a hydrogen atom, Cu, Fe, Co or Ni, X is a halogen atom, and p is an integer of 0 to 8; and at least one phthalocyanine compound selected from the group consisting of compounds represented by formulas (2) and (3), ##STR31## wherein M is a hydrogen atom, Cu, Fe, Co or Ni; A is a phenylene group or a straight-chain or branched alkylene group having 1 or more carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation, and alkanolamine cation, and q is an integer of 0 to 4, and r is an integer of 0 to 8, provided that q and r cannot be 0 (zero) at the same time; and ##STR32## wherein M is a hydrogen atom, Cu, Fe, Co or Ni, A is a phenylene group or a straight-chain or branched alkylene group having 1 or more carbon atoms, M + is a cation selected from the group consisting of alkali metal cation, quaternary ammonium cation, quaternary phosphonium cation, and alkanolamine cation, and s is an integer of 0 to 4, and t is an integer of 0 to 4, provided that s and t cannot be 0 (zero) at the same time; a dispersant comprising at least one dispersant component selected from the group consisting of at least one polymeric compound having a hydrophilic moiety and a hydrophobic moiety, and at least one surfactant having an alkyl group having 5 or more carbon atoms; water; and a humectant.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2002-03-15	2002-09-14	2003-03-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2006-03-15	2006-09-14	2007-03-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2010-03-15	2010-09-14	2011-03-16	$7700.00	Window Closed / Lapsed

Recording ink composition and recording method using the same

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