WO2004029166A1 - インクジェット記録用ブラックインク及びインクジェット記録方法 - Google Patents
インクジェット記録用ブラックインク及びインクジェット記録方法 Download PDFInfo
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- WO2004029166A1 WO2004029166A1 PCT/JP2003/008375 JP0308375W WO2004029166A1 WO 2004029166 A1 WO2004029166 A1 WO 2004029166A1 JP 0308375 W JP0308375 W JP 0308375W WO 2004029166 A1 WO2004029166 A1 WO 2004029166A1
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- 239000005017 polysaccharide Substances 0.000 description 1
- 229920001296 polysiloxane Chemical class 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 239000001057 purple pigment Substances 0.000 description 1
- UBQKCCHYAOITMY-UHFFFAOYSA-N pyridin-2-ol Chemical class OC1=CC=CC=N1 UBQKCCHYAOITMY-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- DUIOPKIIICUYRZ-UHFFFAOYSA-N semicarbazide Chemical compound NNC(N)=O DUIOPKIIICUYRZ-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000019259 sodium dehydroacetate Nutrition 0.000 description 1
- 229940079839 sodium dehydroacetate Drugs 0.000 description 1
- 229940083575 sodium dodecyl sulfate Drugs 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 description 1
- 229910001488 sodium perchlorate Inorganic materials 0.000 description 1
- DSOWAKKSGYUMTF-GZOLSCHFSA-M sodium;(1e)-1-(6-methyl-2,4-dioxopyran-3-ylidene)ethanolate Chemical compound [Na+].C\C([O-])=C1/C(=O)OC(C)=CC1=O DSOWAKKSGYUMTF-GZOLSCHFSA-M 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000001370 static light scattering Methods 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 125000005017 substituted alkenyl group Chemical group 0.000 description 1
- 125000004426 substituted alkynyl group Chemical group 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- MBDNRNMVTZADMQ-UHFFFAOYSA-N sulfolene Chemical compound O=S1(=O)CC=CC1 MBDNRNMVTZADMQ-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- YROXIXLRRCOBKF-UHFFFAOYSA-N sulfonylurea Chemical class OC(=N)N=S(=O)=O YROXIXLRRCOBKF-UHFFFAOYSA-N 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- BZJNMKDNHPKBHE-UHFFFAOYSA-J tetrasodium 3-amino-5-oxido-7-sulfo-6-[[7-sulfonato-4-[(4-sulfonatophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-2-sulfonate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]S(=O)(=O)C=1C=C2C=C(S([O-])(=O)=O)C(N)=CC2=C(O)C=1N=NC(C1=CC(=CC=C11)S([O-])(=O)=O)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 BZJNMKDNHPKBHE-UHFFFAOYSA-J 0.000 description 1
- GMMAPXRGRVJYJY-UHFFFAOYSA-J tetrasodium 4-acetamido-5-hydroxy-6-[[7-sulfonato-4-[(4-sulfonatophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,7-disulfonate Chemical compound [Na+].[Na+].[Na+].[Na+].OC1=C2C(NC(=O)C)=CC=C(S([O-])(=O)=O)C2=CC(S([O-])(=O)=O)=C1N=NC(C1=CC(=CC=C11)S([O-])(=O)=O)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 GMMAPXRGRVJYJY-UHFFFAOYSA-J 0.000 description 1
- SMBAGGHBUKLZPQ-UHFFFAOYSA-J tetrasodium 6-amino-4-hydroxy-3-[[7-sulfinato-4-[(4-sulfonatophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-2,7-disulfonate Chemical compound C1=CC(=CC=C1N=NC2=C3C=CC(=CC3=C(C=C2)N=NC4=C(C5=CC(=C(C=C5C=C4S(=O)(=O)[O-])S(=O)(=O)[O-])N)O)S(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+] SMBAGGHBUKLZPQ-UHFFFAOYSA-J 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- JADVWWSKYZXRGX-UHFFFAOYSA-M thioflavine T Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C1=[N+](C)C2=CC=C(C)C=C2S1 JADVWWSKYZXRGX-UHFFFAOYSA-M 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- LMYRWZFENFIFIT-UHFFFAOYSA-N toluene-4-sulfonamide Chemical group CC1=CC=C(S(N)(=O)=O)C=C1 LMYRWZFENFIFIT-UHFFFAOYSA-N 0.000 description 1
- 239000001003 triarylmethane dye Substances 0.000 description 1
- NJPOTNJJCSJJPJ-UHFFFAOYSA-N tributyl benzene-1,3,5-tricarboxylate Chemical compound CCCCOC(=O)C1=CC(C(=O)OCCCC)=CC(C(=O)OCCCC)=C1 NJPOTNJJCSJJPJ-UHFFFAOYSA-N 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- IELLVVGAXDLVSW-UHFFFAOYSA-N tricyclohexyl phosphate Chemical compound C1CCCCC1OP(OC1CCCCC1)(=O)OC1CCCCC1 IELLVVGAXDLVSW-UHFFFAOYSA-N 0.000 description 1
- OHRVKCZTBPSUIK-UHFFFAOYSA-N tridodecyl phosphate Chemical compound CCCCCCCCCCCCOP(=O)(OCCCCCCCCCCCC)OCCCCCCCCCCCC OHRVKCZTBPSUIK-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- APVVRLGIFCYZHJ-UHFFFAOYSA-N trioctyl 2-hydroxypropane-1,2,3-tricarboxylate Chemical compound CCCCCCCCOC(=O)CC(O)(C(=O)OCCCCCCCC)CC(=O)OCCCCCCCC APVVRLGIFCYZHJ-UHFFFAOYSA-N 0.000 description 1
- WTPOYMNMKZIOGO-UHFFFAOYSA-K trisodium;2,5-dichloro-4-[4-[[5-[[4-chloro-6-(4-sulfonatoanilino)-1,3,5-triazin-2-yl]amino]-2-sulfonatophenyl]diazenyl]-3-methyl-5-oxo-4h-pyrazol-1-yl]benzenesulfonate Chemical compound [Na+].[Na+].[Na+].CC1=NN(C=2C(=CC(=C(Cl)C=2)S([O-])(=O)=O)Cl)C(=O)C1N=NC(C(=CC=1)S([O-])(=O)=O)=CC=1NC(N=1)=NC(Cl)=NC=1NC1=CC=C(S([O-])(=O)=O)C=C1 WTPOYMNMKZIOGO-UHFFFAOYSA-K 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/328—Inkjet printing inks characterised by colouring agents characterised by dyes
Definitions
- the present invention relates to an ink for ink jet recording and a recording method using the same, and particularly relates to an ink for ink jet and an ink jet recording, which have high ejection stability at the time of drawing and excellent storage stability of an obtained image.
- Background art
- Ink jet recording methods include a method in which pressure is applied by a piezo element to eject droplets, a method in which bubbles are generated in ink by heat to eject droplets, a method using ultrasonic waves, and a method using electrostatic force. There is a method of sucking and discharging droplets.
- aqueous inks, oil-based inks, or solid (fused) inks are used.
- water-based inks are easier to manufacture and handle ⁇ Odor ⁇ Compared to oil-based inks and solid (melt-type) inks in terms of their ability to enhance safety, etc. It is the mainstream of the ink jet recording ink.
- the color materials used in these ink jet recording inks have high solubility in solvents (ink medium), high density recording is possible, good hue, light and heat. It has good fastness to air, water and chemicals, has good fixability to the image receiving material and does not spread easily, has good storage stability as ink, has no toxicity, and has high purity. Is required to be available at low cost. However, despite the fact that various dyes and pigments have already been proposed and actually used for ink jets, no color material that satisfies all the above requirements has yet been found.
- the present inventors have studied ink jet inks using dyes.
- water-based black inks have the problem of low image durability.
- black dye unlike carbon black, etc., there is almost no black dye that can obtain high-quality black images such as characters by itself.
- it is general to use a mixture of a plurality of dyes having different absorption spectra, in which case the discoloration speed differs depending on the dyes to be mixed, or the dyes have broad absorption characteristics.
- the fastness of the image is particularly important because the absorption waveform changes due to the discoloration of the dye and the quality of the image containing black is significantly impaired.
- an object of the present invention is to solve the problems of the ink jet recording black ink and the like described in the above technical background.
- An object of the present invention is to provide an ink jet recording ink, particularly a black ink, which is excellent in ejection stability, excellent in weather resistance, and has no deterioration over time in image quality even after aging. Disclosure of the invention
- the object of the present invention has been achieved by the inks for ink jet recording described in the following (1) to (16). These ink jet recording inks are subjected to ink jet recording by the following method (17), and image recording is described in the following (18). The effect of the invention is remarkably exhibited when performed on the image receiving layer of the mounted image recording material c
- Amax power of the absorption spectrum in an aqueous solution is from 500 nm to 700 nm, and at least one dye whose half width in the absorption spectrum of a dilute solution normalized to an absorbance of 1.0 is 100 nm or more is selected.
- a black ink for ink jet characterized by being dissolved or dispersed in an aqueous medium.
- At least one dye whose absorption spectrum Aitiax in the aqueous solution is from 500 nm to 700 ⁇ and the half width in the absorption spectrum of the dilute solution normalized to absorbance 1.0 is 100 nm or more is 100%.
- the Amax power of the absorption spectrum in an aqueous solution is between 500 nm and 700 ntn
- the half width in the absorption spectrum of a diluted solution normalized to an absorbance of 1.0 is 100 nm or more
- the oxidation potential is At least some dyes that are more noble than 1.0V (vs SCE)
- the black square symbol of JIS code 2223 is printed at 48 points, and the reflection density (D R , D G , D B ) of the three colors C, M, and Y measured by one light of the status A filter is calculated.
- Select the location of 0.90-1.10 define the density as the initial density, and forcibly apply this print using an ozone discoloration tester that can always generate 5 ppm ozone.
- Three forced fading rates obtained by applying the first-order chemical reaction rule to the reflection density versus time until each reflection density (D R , D G , D B ) becomes 80% of the initial density value after fading. above a ratio of the maximum and minimum values of the constants (k R, k G, k B) (R) is equal to or than 1.2
- the black ink for an inkjet according to any one of (1) to (4).
- Amax power of absorption spectrum in aqueous solution is between 500 nm and 700 nm, and the half width of absorption spectrum of diluted solution normalized to absorbance 1.0 is less than 100 nm.
- A, B and C are each independently an aromatic group which may be substituted, or Represents a heterocyclic group.
- m and n are 0 or an integer of 1 or more.
- X is one NW - represents a group represented by Q 2.
- Z is - N (Q,) - group or represented by Q 2 - represents a group represented by 0-Q 3.
- Y is, -W- (G) k - represents a group table in - (H) ⁇ . Wherein W and ⁇ or ⁇ is, -GO -, - S0 2 - , -P0 (Q 4) - represents a group represented by.
- G represents a divalent linking group.
- Q and Q 4 represent a hydrogen atom, an amino group, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a heteroaryl group, an alkoxy group, an aryloxy group, a heterocyclicoxy group, a heteroaryloxy group, and an alkyl group.
- X and Z may combine with each other to form a ring.
- ⁇ and n represent 0 or 1, respectively.
- An ink containing at least one dye having an Amax force of 500 nm or 700 nm and at least one dye having an Amax force of 350 nm to 500 nm, and any of the above dyes is oxidized. Potential is more noble than 1.
- OV vs SCE
- the organic solvent used in the ink is characterized by using at least one organic solvent having a boiling point of 150 ° C or higher and at least one organic solvent having a boiling point of 150 ° C or lower.
- a water-miscible organic solvent having a boiling point of 100 ° C or more is used in an amount of 20% by mass or more of the total amount of the ink, and the compound represented by the general formula (A) is used in an amount of 0.02 to 2% by mass of the total amount of the ink.
- An ink jet recording method for discharging an ink droplet according to a recording signal to an image receiving material having an image receiving layer containing white inorganic pigment particles on a support, and recording an image on the image receiving material The ink jet recording method according to the above (17), wherein the ink droplets comprise the ink jet recording ink according to any one of the above (1) to (16). That is, the dye used in the above ink jet recording black ink of the present invention has an absorption spectrum in an aqueous solution of: 700 nm from imax force ⁇ 500 ⁇ , and an absorption spectrum of a dilute solution standardized to an absorbance of 1.0.
- a dye with a half-width of at least 100 nm in a vector The black ink obtained by dissolving or dispersing the dye in an aqueous medium has an appropriate and wide spectral absorption wavelength range, so that there is no waste in dye usage. Therefore, it is possible to have a high level of ejection stability and image fastness.
- the dye having the above-mentioned spectral absorption characteristic contained in the ink of the present invention has an oxidation potential which is more noble than 1.0 V (vs SCE), the fastness to oxidation of the ink is further improved, which is preferable.
- the forced fading rate constant (k v ; J) of the drawing part of the visual neutral color (so-called gray) with respect to ozone gas is
- the image fastness that can be visually recognized is due to the low fading rate constants (k v , s ) and the forced fading rate constants (k R , k G , k B ) of the three colors M and Y. It is further improved when the ratio (R) of the maximum value to the minimum value is 1.2 or less. This effect can be presumed to be due to the fact that the balance of the fastness of the constituent dyes has caused the effect of expanding the luminosity tolerance, since the image fastness also appears in the color balance change.
- the dye represented by the general formula (1) is particularly excellent.
- image receiving medium j such as recording paper or film may be referred to as “media” in accordance with usage in the art.
- the black ink for inkjet of the present invention has a Dmax (maximum absorption wavelength) of 500 nm to 700 nm, and a half-value width in an absorption spectrum of a dilute solution normalized to an absorbance of 1.0 is 100 nm or more (preferably 120 nm). At least 500 nm or less, more preferably 120 nm or more and 350 nm or less).
- the dye (L) alone can produce black with high image quality (good closeness), that is, a neutral black that is hardly emphasized in any of B, G, and R, regardless of the observation light source.
- this dye alone as a dye for black ink
- a reblack ink is produced by dissolving or dispersing the dye alone or in an aqueous medium in combination with the dye.
- the preferred properties as a black ink for an ink jet that is, 1) weather resistance
- the ink of the present invention satisfies the following four conditions in order to satisfy excellent conditions and Z or 2) that black balance (visual neutrality) is not lost even after fading.
- a black square symbol of JIS code 2223 is printed at 48 points, and the visual reflection density (D vis ) of the printed character portion is measured to obtain a forced fading rate constant (k vis ; ⁇ "5.0x10- 2 [hour- '] or less, preferably 3.0 x 10- 2 [hour” 1 ] or less, preferably to be al 1. Ox 10- 2 [hour "1 ] in ink as to become less It is desirable (Condition 1).
- the black ink of the present invention C of the black ink, M, Y 3 colors forced fading rate constants (k R, k G, k B)
- the ratio (R) is 1.2 or less, is preferred properly 1.1 or less, such as more preferably a 1.05 or less It is desirable to use ink (Condition 2).
- M, Y 3 colors forced fading rate constant (k R, k G, k B) are determined as follows. That is, a black square symbol of JIS code 2223 is printed at 48 points, and the reflection density (D R , D G , D B ) of three colors C, M, and Y measured by a status A filter is measured.
- the coloring area having a density value of 0.90 to 1.10 is defined as the initial density, and the printed matter is forcibly applied using an ozone discoloration tester capable of constantly generating 5 ppm of ozone as described above.
- the time required for each of the reflection densities (D R , D G , and D B ) to reach 80% of the initial density value is determined.
- the fading rate constant obtained as described above is the fading rate constant of the printed colored area, and this is used as the fading rate constant of the ink.
- S code 2223 was printed at 48 points was an image printed in a size that sufficiently covered the aperture of the density measuring instrument. It goes without saying that it is a thing.
- the oxidation potential of at least one of the dyes contained therein is more noble than 1.00 V (vs SCE), preferably more than 1.10 V (vs SCE), and more preferably 1.20 V (vs SCE). vs. SCE), most preferably more than 1.25 V (vs SCE), and it is preferred that at least one of the dyes has an Amax of 500 nm or more. (Condition 3)
- Eox oxidation potential
- This method is described in, for example, "New Instrumentalethodsin Electrochemistry, 9 £> 4 years by P. Delahay, Interscience Pub Iishers 3 ⁇ 4flj)- ⁇ A. J. Bard et al.," Electrochemical Methods “I-980, published by John Wiley & Sons, Inc.” and Akira Fujishima et al., “Electrochemical Measurement Methods” (published by Gihodo Publishing Co., Ltd., 1984).
- the oxidation potential was determined by measuring the test sample in a solvent such as dimethylformamide diacetonitrile containing a supporting electrolyte such as sodium perchlorate and tetrapropylammonium perchlorate. — 4 to 1 X 10 — Dissolve 6 mol litre, and measure the value with respect to SCE (saturation force electrode) using cyclic portometry or DC polarography. This value may deviate by several tens of milliports due to the effect of liquid potential difference or liquid resistance of the sample solution, but the reproducibility of the potential is guaranteed by inserting a standard sample (for example, hydroquinone). In addition, a correct oxidation potential can be obtained irrespective of the difference in the running method such as cyclic portometry and DC polarography and the difference in the electrodes.
- a solvent such as dimethylformamide diacetonitrile containing a supporting electrolyte such as sodium perchlorate and tetrapropylammonium perch
- 0.1 mol I dm- 3 of dimethylformamide containing perpropylammonium perchlorate as a supporting electrolyte (the concentration of the dye is 0%).
- the value (vs SCE) measured by direct current polarography at 0 1 mo I dm— 3 ) is defined as the oxidation potential of the dye.
- E ox indicates the ease with which electrons move from the sample to the electrode, and the larger the value (the higher the oxidation potential), the more difficult it is for the electrons to move from the sample to the electrode, in other words. .
- the oxidation potential becomes more noble by introducing an electron-withdrawing group, and the oxidation potential becomes more noble by introducing an electron-donating group.
- the black ink of the present invention is preferably an ink produced using the azo dye described in the above general formula (1).
- the azo dyes represented by the general formula (1) are as follows: Imax is from 500 nm to 700 nm, and diluted with an absorbance of 1.0. Dyes (L) whose half-width in the absorption spectrum of the solution is 100 nm or more can be mentioned.
- the dye (S) having an Amax in the range of 350 nm to 500 nm can also be mentioned as corresponding to the dye of the general formula (1).
- At least one of the dyes (L) is a dye of the general formula (1), and particularly preferably at least one of the dyes (L) and (S) is a dye of the general formula (1).
- it is preferable that 90% by mass of all the dyes in the ink is the dye of the general formula (1) (condition 4).
- the black ink used in the present invention is a black ink satisfying at least one of the above conditions 1 to 4.
- A, B and C each independently represent an aromatic group which may be substituted or a heterocyclic group which may be substituted (A and C are monovalent groups And B is a divalent radical).
- m and n are 0 or an integer of 1 or more.
- n 1 is particularly preferable, and at least B and C are each an unsaturated heterocyclic group.
- the azo dye represented by the general formula (1) is particularly preferably a dye represented by the following general formula (2).
- G, R, and R 2 each independently represent a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, a heterocyclic group, a cyano group, a carboxyl group, a carbamoyl group, an alkoxycarbonyl group, or an aryloxy group.
- R 5 and R 6 each independently represent a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an alkyl group or an arylsulfonyl group. And a sulfamoyl group, and each group may further have a substituent.
- R 5 and R 6 are not simultaneously hydrogen atoms. And R 5 or R 5 and R s may combine to form a 5- or 6-membered ring.
- the azo dye represented by the general formula (2) is preferably a dye represented by the following general formula (3).
- R 7 and R 8 have the same meaning as R, in the general formula (2).
- Halogen atoms include fluorine, chlorine and bromine.
- the aliphatic group means an alkyl group, a substituted alkyl group, an alkenyl group, a substituted alkenyl group, an alkynyl group, a substituted alkynyl group, an aralkyl group and a substituted aralkyl group.
- the aliphatic group may have a branch or may form a ring.
- the aliphatic group preferably has 1 to 20 carbon atoms, and more preferably 1 to 16 carbon atoms.
- the aryl portion of the aralkyl group and the substituted aralkyl group is preferably phenyl or naphthyl, and phenyl is particularly preferred.
- aliphatic groups include methyl, ethyl, butyl, isopropyl, tert-butyl, hydroxethyl, methoxethyl, cyanoethyl, trifluromethyl, 3-sulfopropyl, 4 —Sulfobutyl, cyclohexyl, benzyl, 2-phenethyl, vinyl, and aryl groups.
- a monovalent aromatic group means an aryl group and a substituted aryl group.
- the aryl group is preferably phenyl or naphthyl, with phenyl being particularly preferred.
- the monovalent aromatic group preferably has 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms. Examples of the monovalent aromatic group include phenyl, p-tolyl, p-methoxyphenyl, o-chlorophenyl and m- (3-sulfopropylamino) phenyl.
- the divalent aromatic group is a divalent version of these monovalent aromatic groups, and examples thereof include phenylene, p-tolylene, p-methoxyphenylene, and the like. One-way mouth phenylene, m- (3-sulfopropylamino) phenylene, naphthylene, etc. are included.
- the heterocyclic group includes a substituted heterocyclic group and an unsubstituted heterocyclic group.
- An aliphatic ring, an aromatic ring, or another heterocyclic ring may be fused to the heterocyclic ring.
- the heterocyclic group is preferably a 5- or 6-membered heterocyclic group, and the heteroatom of the heterocyclic ring includes N, 0, and S.
- substituents include an aliphatic group, amino group, a halogen atom, an alkyl group and an arylsulfonyl group, an acyl group, an acylamino group, a sulfamoyl group, a carbamoyl group, and an ionic hydrophilic group.
- heterocyclic group examples include a 2-pyridyl group, a 2-thienyl group, a 2-thiazolyl group, a 2-benzothiazolyl group, a 2-benzoxazolyl group, and a 2-furyl group.
- the rubamoyl group includes a substituted rubamoyl group and an unsubstituted carbamoyl group.
- the substituent include an alkyl group.
- the carbamoyl group include a methylcarbamoyl group and a dimethylcarbamoyl group.
- the alkoxycarbonyl group includes a substituted alkoxycarbonyl group and an unsubstituted alkoxycarbonyl group.
- the alkoxycarbonyl group is preferably an alkoxycarbonyl group having 2 to 20 carbon atoms.
- Examples of the substituent include an ionic hydrophilic group.
- Examples of the alkoxycarbonyl group include a methoxycarbonyl group and an ethoxycarbonyl group.
- the aryloxycarbonyl group includes a substituted aryloxycarbonyl group and an unsubstituted aryloxycarbonyl group.
- the aryloxycarbonyl group an aryloxycarbonyl group having 7 to 20 carbon atoms is preferable.
- the substituent include an ionic hydrophilic group.
- the aryloxycarbonyl group include a phenoxycarbonyl group.
- the heterocyclic oxycarbonyl group includes a substituted heterocyclic oxycarbonyl group and an unsubstituted heterocyclic oxycarbonyl group. Heterocyclic oxycarbonyl group and Thus, a heterocyclic oxycarbonyl group having 2 to 20 carbon atoms is preferable. Examples of the substituent include an ionic hydrophilic group. Examples of the heterocyclic oxycarbonyl group include a 2-pyridyloxycarbonyl group.
- the above-mentioned acryl group includes a substituted acryl group and an unsubstituted acryl group.
- the acyl group is preferably an acyl group having 1 to 20 carbon atoms.
- the substituent include an ionic hydrophilic group.
- Examples of the above-mentioned acetyl group include an acetyl group and a benzoyl group.
- the alkoxy group includes a substituted alkoxy group and an unsubstituted alkoxy group.
- an alkoxy group having 1 to 20 carbon atoms is preferable.
- the substituent include an alkoxy group, a hydroxyl group, and an ionic hydrophilic group.
- the alkoxy group include a methoxy group, an ethoxy group, an isopropoxy group, a methoxyethoxy group, a hydroxyethoxy group and a 3-carboxypropoxy group.
- the aryloxy group includes an aryloxy group having a substituent and an unsubstituted aryloxy group.
- the aryl group is preferably an aryl group having 6 to 20 carbon atoms.
- the substituent include an alkoxy group and an ionic hydrophilic group.
- Examples of the above aryloxy group include a phenoxy group, a p-methoxyphenoxy group and an o-methoxyphenoxy group.
- the heterocyclic group includes a substituted heterocyclic group and an unsubstituted heterocyclic group.
- the heterocyclic group is preferably a heterocyclic oxy group having 2 to 20 carbon atoms.
- the substituent include an alkyl group, an alkoxy group, and an ionic hydrophilic group.
- Examples of the above heterocyclic oxy group include a 3-pyridyloxy group and a 3-chenyloxy group.
- the silyl group is preferably an aliphatic group having 1 to 20 carbon atoms or a silyl group substituted with an aromatic group.
- Examples of the silyl group include a trimethylsilyl group and a diphenylmethylsilyl group.
- the acyloxy group includes a substituted alkoxy group and an unsubstituted acyloxy group.
- the hydroxyl group an alkoxy group having 1 to 20 carbon atoms is preferable.
- the substituent include an ionic hydrophilic group.
- the pheasant group include an acetate group and a benzoyloxy group.
- the carbamoyloxy group includes a substituted carbamoyloxy group and an unsubstituted carbamoyloxy group.
- the substituent include an alkyl group, and examples of the carbamoyloxy group include an N-methylcarbamoyloxy group.
- the alkoxycarbonyl group includes a substituted alkoxycarbonyl group and an unsubstituted alkoxycarbonyl group. Alkoxy power As the luponyl group, an alkoxycarboxy group having 2 to 20 carbon atoms is preferable.
- Examples of the alkoxycarbonyloxy group include a methoxycarbonyloxy group and an isopropoxycarbonyloxy group.
- the aryloxycarbonyloxy group includes a substituted aryloxycarbonyl group and an unsubstituted aryloxycarbonyloxy group having a substituent.
- the aryloxycarbonyl group is preferably an aryloxycarbonyl group having 7 to 20 carbon atoms. Examples of the aryloxycarbonyloxy group include a phenoxycarbonyloxy group.
- the amino group includes an amino group substituted with an alkyl group, an aryl group or a heterocyclic group, and the alkyl group, the aryl group and the heterocyclic group may further have a substituent.
- the alkylamino group an alkylamino group having 1 to 20 carbon atoms is preferable.
- the substituent include an ionic hydrophilic group.
- the alkylamino group include a methylamino group and a getylamino group.
- the arylamino group includes an arylamino group having a substituent, an unsubstituted arylamino group, and an anilino group.
- the arylamino group is preferably an arylamino group having 6 to 20 carbon atoms.
- the substituent include a halogen atom and an ionic hydrophilic group.
- arylamino groups include phenylamino and 2-chlorophenylamino.
- the heterocyclic amino group includes a substituted heterocyclic amino group and an unsubstituted heterocyclic amino group.
- the heterocyclic amino group is preferably a heterocyclic amino group having 2 to 20 carbon atoms.
- Examples of the substituent include an alkyl group, a halogen atom, and an ionic hydrophilic group.
- the acylamino group includes an acylamino group having a substituent and an unsubstituted acylamino group.
- the acylamino group is preferably an acylamino group having 2 to 20 carbon atoms.
- the substituent include an ionic hydrophilic group.
- the acylamino group include an acetylamino group, a propionylamino group, a benzoylamino group, an N-phenylacetylamino and a 3,5-disulfobenzoylamino group.
- the laid group includes a substituted laid group and an unsubstituted laid group.
- a perrad group having 1 to 20 carbon atoms is preferable.
- the substituent include an alkyl group and an aryl group.
- raid groups include:
- the sulfamoylamino group includes a substituted sulfamoylamino group and an unsubstituted sulfamoylamino group.
- substituents include alkyl groups. I will.
- the sulfamoylamino group include an N, N-dipropylsulfamoylamino group.
- the alkoxycarbonylamino group includes a substituted alkoxycarbonylamino group and an unsubstituted alkoxycarbonylamino group.
- Alkoxy force As the roponylamino group, an alkoxycarbonylamino group having 2 to 20 carbon atoms is preferable. Examples of the substituent include an ionic hydrophilic group. Examples of the alkoxylation luponylamino group include an ethoxycarbonylamino group.
- the aryloxycarbonylamino group includes a substituted aryloxycarbonylamino group and an unsubstituted aryloxycarbonylamino group.
- the aryloxycarbonylamino group is preferably an aryloxycarbonylamino group having 7 to 20 carbon atoms. Examples of the substituent include an ionic hydrophilic group. Examples of the aryloxycarbonylamino group include a phenoxycarbonylamino group.
- the alkyl and arylsulfonylamino groups include substituted alkyl and arylsulfonylamino groups and unsubstituted alkyl and arylsulfonylamino groups.
- a sulfonylamino group having 1 to 20 carbon atoms is preferable.
- the substituent include an ionic hydrophilic group.
- Examples of these sulfonylamino groups include a methylsulfonylamino group, an N-phenyl-methylsulfonylamino group, a phenylsulfonylamino group, and a 3-carboxyphenylsulfonylamino group.
- the heterocyclic sulfonylamino group includes a substituted heterocyclic sulfonylamino group and an unsubstituted heterocyclic sulfonylamino group.
- a heterocyclic sulfonylamino group having 1 to 12 carbon atoms is preferable.
- the substituent include an ionic hydrophilic group.
- the heterocyclic sulfonylamino group include a 2-year-old phensulfonylamino group and a 3-pyridinesulfonylamino group.
- the heterocyclic sulfonyl group includes a substituted heterocyclic sulfonyl group and an unsubstituted heterocyclic sulfonyl group.
- the heterocyclic sulfonyl group is preferably a heterocyclic sulfonyl group having 1 to 20 carbon atoms. Examples of the substituent include an ionic hydrophilic group. Examples of the heterocyclic sulfonyl group include a 2-thiophenesulfonyl group and a 3-pyridin sulfonyl group.
- the heterocyclic sulfinyl group includes a substituted heterocyclic sulfinyl group and an unsubstituted heterocyclic sulfinyl group.
- a heterocyclic sulfinyl group having 1 to 20 carbon atoms is preferable.
- substituents include ionic Contains hydrophilic groups.
- Examples of the heterocyclic sulfinyl group include a 4-pyridinepyridine group.
- Alkyl, aryl and heterocyclic groups include substituted alkyl, aryl and heterocyclic groups and unsubstituted alkyl, aryl and heterocyclic groups. Alkyl, aryl and heterocyclic groups. It is preferable that the number of carbon atoms is 1 to 20. Examples of the substituent include an ionic hydrophilic group. Examples of alkyl, aryl, and heterocyclic groups include methylthio, phenylthio, and 2-pyridylthio.
- alkyl and arylsulfonyl groups examples include c- alkyl and arylsulfonyl groups including substituted alkyl and arylsulfonyl groups, and unsubstituted alkyl and arylsulfonyl groups. Examples thereof include a methylsulfonyl group and a phenylsulfonyl group.
- the alkyl and arylsulfinyl groups include substituted alkyl and arylsulfinyl groups and unsubstituted alkyl and arylsulfinyl groups.
- Examples of the alkyl and arylsulfinyl groups include a methylsulfinyl group and a phenylsulfinyl group, respectively.
- the sulfamoyl group includes a substituted sulfamoyl group and an unsubstituted sulfamoyl group.
- substituent include an alkyl group.
- the sulfamoyl group include a dimethylsulfamoyl group and a di (2-hydroxyxethyl) sulfamoyl group.
- A, B and C are each independently an optionally substituted aromatic group (A and C are monovalent aromatic groups, for example aryl groups; B is a divalent aromatic group)
- a heterocyclic group (A, C is a monovalent heterocyclic group; B is a divalent heterocyclic group).
- the aromatic ring include a benzene ring and a naphthalene ring, and the hetero atoms of the heterocyclic ring include N, 0, and S.
- An aliphatic ring, an aromatic ring, or another hetero ring may be condensed to the hetero ring.
- the substituent may be an arylazo group or a heterocyclic azo group.
- At least two of A, B and C are preferably a heterocyclic ring.
- Preferred examples of the heterocyclic group represented by C include an aromatic nitrogen-containing 6-membered heterocyclic group represented by the following general formula (4).
- C is an aromatic nitrogen-containing 6-membered cyclic group represented by the following general formula (4)
- the general formula (1) corresponds to the general formula (2).
- R 5 and R 6 each independently represent a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an alkyl group or an aryl group. It represents a monosulfonyl group or a sulfamoyl group, and each group may further have a substituent.
- Preferred substituents represented by R 5 and R 6 include a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, an alkyl group and an arylsulfonyl group.
- a hydrogen atom, an aromatic group, a heterocyclic group, an acyl group, an alkyl group and an arylsulfonyl group More preferred are a hydrogen atom, an aryl group and a heterocyclic group. Each group may further have a substituent. However, R 5 and R 6 are not simultaneously hydrogen atoms.
- G, R, and R 2 each independently represent a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, a heterocyclic group, a cyano group, a lipoxyl group, a lipamoyl group, an alkoxyl propyl group, or Ryloxycarbonyl, heterocyclic oxycarbonyl, acyl, hydroxy, alkoxy, aryloxy, heterocyclic oxy, silyloxy, acyloxy, carbamoyloxy, alkoxycarbonyloxy.
- Carbonyloxy group amino group (including anilino group and heterocyclic amino group), acylylamino group, peridot grave, sulfamoylamino group, alkoxy group ryponylamino group, aryloxycarbonylamino group, alkyl or amino Arylsulfonylamino group, heterocyclic sulfonylamino group, nitro group, alk And an arylthio group, a heterocyclic thio group, an alkyl and arylsulfonyl group, a heterocyclic sulfonyl group, an alkyl and arylsulfinyl group, a heterocyclic sulfinyl group, a sulfamoyl group, or a sulfo group.
- Examples of the substituent represented by G include a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, a hydroxy group, an alkoxy group, an aryl group, an acyl group, a heterocyclic group, and an amino group.
- an acylamino group (Including an anilino group and a heterocyclic amino group), an acylamino group, a ureido group, a sulfamoylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, an alkyl and arylthio group Or a heterocyclic group, more preferably a hydrogen atom, a halogen atom, an alkyl group, a hydroxy group, an alkoxy group, an aryloxy group, an acyl group, an amino group (including an anilino group and a heterocyclic amino group). Or an acylamino group, of which a hydrogen atom, an anilino group and an acylamino group are most preferred. Each group may further have a substituent.
- Preferred substituents represented by R and R 2 include a hydrogen atom, an alkyl group, a halogen atom, an alkoxycarbonyl group, a carboxyl group, a carbamoyl group, a hydroxy group, an alkoxy group, and a cyano group. Each group may further have a substituent.
- R 5 , or R 5 and R 6 may combine to form a 5- or 6-membered ring.
- substituents represented by A, RR 2 , R 5 , R 6 , and G further has a substituent
- examples of the substituent include those described above for G, R and R 2 .
- the - A, RI further preferably has an ionic hydrophilic group as a substituent at any position on RR 5, RG.
- the ionic hydrophilic group as a substituent includes a sulfo group, a carboxyl group, a phosphono group, a quaternary ammonium group, and the like.
- a hydroxyl group, a phosphono group and a sulfo group are preferable, and a carboxyl group and a sulfo group are particularly preferable.
- the carboxyl, phosphono and sulfo groups may be in the form of a salt, and examples of the counter ion forming the salt include ammonium ion, alkali metal ion (eg, lithium ion, sodium ion, potassium ion) and organic compound. Cations (eg, tetramethylammonium ion, tetramethylguanidium ion, tetramethylphosphonium).
- preferred heterocyclic rings include a thiophene ring, a thiazole ring, an imidazole ring, a benzothiazole ring and a thienothiazole ring.
- Each heterocyclic group may further have a substituent.
- a thiene ring, a thiazole ring, an imidazole ring, a benzothiazole ring, and a thienothiazole ring represented by the following general formulas (a) to (e) are preferable.
- B is a phenyl ring represented by (a) and C is a structure represented by the general formula (4)
- the general formula (1) corresponds to the general formula (3). Will do.
- R 9 to R 17 represent the same substituents as G, R or R 2 in the general formula (2).
- Z represents an electron-withdrawing group having a Hammett's substituent constant ⁇ p value of 0.20 or more. Is preferably an electron-withdrawing group having a value of 0.30 or more, more preferably an electron-withdrawing group of 0.45 or more, and particularly preferably an electron-withdrawing group of 0.60 or more. It is desirable not to exceed zero.
- the electron-withdrawing substituents described below can be learned.
- Particularly preferred are a cyano group, an alkylsulfonyl group having 1 to 20 carbon atoms, and an arylsulfonyl group having 6 to 20 carbon atoms, and most preferred is a cyano group.
- R is each independently a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an alkyl and arylsulfonyl group, or Represents a sulfamoyl group.
- a hydrogen atom, an aromatic group, a heterocyclic group, an acyl group, an alkyl or arylsulfonyl group is preferable, and a hydrogen atom, an aromatic group, and a heterocyclic group are particularly preferable.
- Each group described in the general formula (5) may further have a substituent.
- Hammett's substituent constant ⁇ ⁇ value used in the present specification will be described.
- the Hammett's rule is an empirical rule proposed by LP Hammett in 1935 to discuss quantitatively the effect of substituents on the reaction or equilibrium of benzene derivatives, but this rule has been widely accepted today. I have.
- the substituent constants determined by Hammett's rule include the ⁇ P value and the ⁇ m value, and these values can be found in many general books. For example, JA Dean, “Lange ' s Handbook of
- each substituent is limited or described by Hammett's substituent constant ⁇ ⁇ , but this is limited only to the substituent having a value known in the literature, which can be found in the above-mentioned textbook. This does not mean that, even if the value is unknown in the literature, it goes without saying that it includes a substituent that would be included in the range when measured based on Hammett's rule.
- the general formula (1) or (2) of the present invention includes those which are not benzene derivatives, but as a measure of the electronic effect of the substituent, the ⁇ ⁇ value is independent of the substitution position. use. In the present invention, ⁇ . The value is used in this sense.
- the electron-withdrawing group having a Hammett substituent constant ⁇ ⁇ value of 0.60 or more include a cyano group, a nitro group, and an alkylsulfonyl group (eg, a methanesulfonyl group, an arylsulfonyl group (eg, a benzenesulfonyl group)). be able to.
- Examples of the electron-withdrawing group having a Hammett ⁇ ⁇ value of 0.45 or more include an acyl group (eg, an acetyl group), an alkoxycarbonyl group (eg, a dodecyloxycarbonyl group), an aryloxycarbonyl group (eg, For example, m-chlorophenoxycarbonyl), alkylsulfinyl group (for example, ⁇ -propylsulfinyl), aryl-sulfinyl group (for example, phenylsulfinyl), sulfamoyl group (for example, ⁇ -ethylsulfamoyl, ⁇ ) , ⁇ -dimethylsulfamoyl) and an alkyl halide group (eg, trifluoromethyl).
- an acyl group eg, an acetyl group
- an alkoxycarbonyl group eg, a dodecy
- Examples of the electron-withdrawing group having a Hammett substituent constant ⁇ ⁇ value of 0.30 or more include, in addition to the above, an acyloxy group (for example, acetoxy), a carbamoyl group (for example, methyl carbamoyl, , ⁇ -dibutylcarbamoyl), halogenated alkoxy group (for example, trifluoromethyl), halogenated aryloxy group (for example, pentafluoromethyl), sulfonyloxy group (for example, methylsulfonyloxy), halogenated Alkylthio groups (eg, difluoromethylthio), aryl groups substituted with two or more electron-withdrawing groups having a ⁇ ⁇ value of 0.15 or more (eg, 2,4-dinitrophenyl, pentac ⁇ phenyl), And heterocycles (eg, 2-penzoxazolyl, 2-benzothiazolyl, 1-phenyl
- Specific examples of the electron-withdrawing group having a ⁇ value of 0.20 or more include a halogen atom in addition to the above.
- Particularly preferred combinations of the substituents as the azo dye represented by the general formula (3) are, as R 5 and R 6 , a hydrogen atom, an alkyl group, an aryl group, a complex ring group, a sulfonyl group, and an acyl group. And more preferably a hydrogen atom, an aryl group, a heterocyclic group or a sulfonyl group, and most preferably a hydrogen atom, an aryl group or a heterocyclic group.
- R 5 and R 6 are not both hydrogen atoms.
- G is preferably a hydrogen atom, a halogen atom, an alkyl group, a hydroxy group, an amino group, or an acylamino group, more preferably a hydrogen atom, a halogen atom, an amino group, or an acylamino group, and most preferably a hydrogen atom.
- An amino group An acylamino group.
- a pyrazole ring, an imidazole ring, an isothiazole ring, a thiadiazole ring, and a benzothiazole ring are preferable, a pyrazole ring and an isothiaryl ring are more preferable, and a pyrazole ring is most preferable. is there.
- a compound in which at least one of various substituents is the above-mentioned preferable group is preferable, and more various substituents are preferable.
- Compounds in which the groups are the preferred groups are more preferred, and compounds in which all the substituents are the preferred groups are most preferred.
- the azo dye used in the present invention is not limited to the following examples, and may include a carboxyl group, a phosphono group and
- the sulfo group may be in the form of a salt, and examples of the counter ion forming the salt include an ammonium ion, an alkali metal ion (eg, lithium ion, sodium ion, potassium ion) and an organic ion. (Eg, tetramethylammonium ion, tetramethyldanidium ion, tetramethylphosphonium).
- the dyes represented by the general formulas (1), (2), (3) and (5) can be synthesized by a coupling reaction between a diazo component and a coupler.
- the main synthesis method and For example, it can be synthesized with reference to Japanese Patent Application Laid-Open Nos. 2-241191, 2001-179245, and Japanese Patent Application No. 20001-2482.
- the ink composition for ink jet recording of the present invention preferably contains the azo dyes represented by the general formulas (1), (2), (3) and (5) in an amount of from 0.2 to 20% by mass. More preferably, the content is 0.5 to 15% by mass. Further, two or more azo dyes (L) of the above general formula may be used in combination, and in that case, it is preferable in that the restriction on solubility is reduced.
- the dye (L) of the above general formula alone can be used to produce “(close)” black with high image quality, that is, black that is hardly emphasized in any of B, G, and R, regardless of the observation light source.
- this dye alone as a dye for black ink, but usually it is common to use it together with a dye that covers the region where the absorption of this dye is low.
- a desirable black is realized by using in combination with a dye or pigment having a main absorption in the yellow region.
- a dye or pigment having a main absorption in the yellow region a direct dye or an acid dye represented by a commonly used azo dye or azomethine dye can be used.
- the pigment an aqueous dispersion of a general pigment having a pigment number can be used in combination. Of these, it is particularly preferable to use the dye represented by the general formula (1) as the short-wavelength dye (S) described above.
- a dye having an oxidation potential (Eox) of 1.OV (vsSCE) is preferable, and a dye having an Eox of 1.2 V (vsSCE) is particularly preferable.
- the black ink for an ink jet of the present invention contains the dye in a total amount of 0.2 to 25% by mass, preferably, 0.5 to 15% by mass.
- the ink composition of the present invention preferably further contains a compound represented by the general formula (A) in the ink composition.
- General formula (A) is a compound represented by the general formula (A)
- X is - Q - represents a group represented by Q 2.
- Z is - NiQ,) - Q 2 group or represented by - 0- Q represents a group represented by 3.
- Y is represented by-W- (G) k- (H) n-
- W and H represent a group represented by —C0—, —SO Factory, —P0 (Q 4 ) —, and are preferably a carbonyl group or a sulfonyl group.
- G represents a divalent linking group.
- Preferred divalent linking groups are represented by an alkylene group, an alkynylene group, an alkynylene group, an arylene group, an ether-bonded oxygen atom, an imino group, an alkylimino group, a tetraether-bonded sulfur atom, and -V- (V represents a heterocyclic ring) and the like.
- the alkylene group represented by G preferably has 1 to 20 carbon atoms, and includes, for example, methylene group, ethylene group, 1,3-propylene group, 1,2-propylene group, 1,4-butylene group, 1, 6-hexylene group and 1,8-octylene group.
- the alkenylene group preferably has 1 to 20 carbon atoms, and examples thereof include a vinylene group.
- the arylene group preferably has 1 to 20 carbon atoms, for example, 1,2-phenylene group, 1,3-phenylene group, 1,4-phenylene group, 1,8-naphthylene Groups, 1,5-naphthylene group, 2,6-naphthylene group and the like.
- Qi to Q 4 represent a hydrogen atom, an amino group, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a heteroaryl group, an alkoxy group, an aryloxy group, a heterocyclic group, a heteroaryloxy group, or an alkylamino Group, arylamino group, heterocyclic amino group, or heteroarylamino group.
- the alkyl group represented by ( ⁇ to ( ⁇ ) preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, a methyl group, a t-butyl group, and a cyclohexyl group.
- the alkenyl group preferably has 2 to 30 carbon atoms, and more preferably has 2 to 15 carbon atoms.
- a vinyl group, a 1-propenyl group, a 1-buten-2-yl group, a cyclohexene-1-yl group and the like can be mentioned.
- the alkynyl group preferably has 2 to 30 carbon atoms, more preferably 2 to 15 carbon atoms, and includes, for example, an ethynyl group and a 1-propynyl group.
- the aryl group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and includes, for example, a phenyl group, a tolyl group, a xylyl group, a naphthyl group, a biphenylyl group, a pyrenyl group and the like. .
- the heterocyclic group and the heteroaryl group are preferably a 5- or 6-membered ring, and may be condensed with another ring.
- the hetero atom include a nitrogen atom, an oxygen atom, and a sulfur atom. It preferably has 2 to 30 carbon atoms, and more preferably 2 to 15 carbon atoms. Examples thereof include a pyridyl group, a piperidyl group, an oxazolyl group, an oxaziazolyl group, a tetrahydrofuryl group, a phenyl group, and the like.
- the heterocyclic ring represented by V has the same meaning as the heterocyclic group described herein.
- the alkoxy group preferably has 1 to 30 carbon atoms, and more preferably has 1 to 15 carbon atoms.
- a methoxy group, an ethoxy group, a cyclohexyloxy group and the like can be mentioned.
- the aryloxy group preferably has 6 to 30 carbon atoms, and more preferably 6 to 15 carbon atoms. Examples include a phenoxy group, a 1-naphthoxy group, a 4-phenylphenoxy group and the like.
- hetero ring in the heterocyclic oxy group, the heteroaryl group, the heterocyclic amino group and the heteroarylamino group are the same as those described above.
- amino group in the alkylamino group, arylamino group, heterocyclic amino group and heteroarylamino group may be any of primary or secondary.
- Each group of G, Q, ⁇ Q 4, if it is substitutable may have a substituent, examples of the substituent include a halogen atom, Shiano group, a formyl group, an alkyl group, an alkenyl group Alkynyl group, aryl group, heterocyclic group, primary to tertiary amino group, imino group, alkoxy group, aryl group, alkylthio group, arylthio group, carbonamide group, sulfonamide group, and carbamoyl group , Sulfamoyl group, alkylcarbonyl group, arylcarbonyl group, alkylsulfonyl group, arylsulfonyl group, alkoxycarbonyl group, aryloxycarbonyl group, alkyl group, luponyloxy group, arylcarbonylcarbonyl group, urethane group, ureide And carbonate groups.
- halogen atoms are a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
- the alkyl group preferably has 1 to 30 carbon atoms, and more preferably has 1 to 15 carbon atoms.
- a methyl group, a t-butyl group, a cyclohexyl group and the like can be mentioned.
- the alkenyl group preferably has 2 to 30 carbon atoms, more preferably 2 to 15 carbon atoms, and includes, for example, a vinyl group, a 1-propenyl group, a 1-buten-2-yl group, a cyclohexene -1 -yl group and the like.
- the alkynyl group preferably has 2 to 30 carbon atoms, more preferably ⁇ 2 to 15 carbon atoms, and includes, for example, an ethynyl group and a 1-propynyl group.
- the aryl group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and includes, for example, a phenyl group, a tolyl group, a xylyl group, a naphthyl group, a piphenylyl group and a pyrenyl group.
- a phenyl group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and includes, for example, a phenyl group, a tolyl group, a xylyl group, a naphthyl group, a piphenylyl group and a pyrenyl group.
- the heterocyclic group is preferably a 5- or 6-membered ring, and may be condensed with another ring.
- the hetero atom include a nitrogen atom, an oxygen atom, and a sulfur atom. It preferably has 2 to 30 carbon atoms, more preferably 2 to 15 carbon atoms, and examples thereof include a pyridyl group, a piperidyl group, a xylazolyl group, a xylazodazolyl group, a tetrahydrofuryl group, and a phenyl group.
- the primary to tertiary amino groups include an amino group, an alkylamino group, an arylamino group, a dialkylamino group, a diarylamino group, an alkylarylamino group, a heterocyclic amino group, a bisheterocyclic amino group, and the like, and are preferable.
- a tertiary amino group having 1 to 30 carbon atoms, more preferably 1 to 16 carbon atoms, and examples thereof include a dimethylamino group, a diphenylamino group, and a phenylnaphthylamino group.
- ⁇ R H is a hydrogen atom, an alkyl group, Ariru group, a heterocyclic group, an alkoxy group, ⁇ Li one Ruokishi And a group selected from primary and tertiary amino groups. It preferably has 1 to 30 carbon atoms, and more preferably 1 to 15 carbon atoms.
- the alkoxy group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, a methoxy group, an ethoxy group, a cyclohexyloxy group and the like.
- the aryloxy group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and includes, for example, phenoxy, 1-naphthoxy, 4-phenylphenoxy, and the like.
- the alkylthio group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, a methylthio group, an ethylthio group, a cyclohexylthio group and the like.
- the arylthio group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and includes, for example, a phenylthio group and a tolylthio group.
- the carboxamide group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, an acetoamide group, a benzoylamide group, and an N-methylbenzoylamide group.
- the sulfonamide group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, a methanesulfonamide group, a benzenesulfonamide group, and a P-toluenesulfonamide group. .
- the schamoyl group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms.
- an unsubstituted carbamoyl group, a methylcarbamoyl group, a dimethylcarbamoyl group, a phenylcarbamoyl group, a diphenylcarbamoyl group, a dibutylcarbamoyl group and the like can be mentioned.
- the sulfamoyl group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, an unsubstituted sulfamoyl group, methylsulfamoyl group, dimethylsulfamoyl group, phenylsulfamoyl group, diphenyls A rufamoyl group and a dioctylsulfamoyl group.
- the alkylcarbonyl group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, an acetyl group, a propionyl group, a ptyloyl group, a lauroyl group and the like.
- the arylcarbonyl group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and examples thereof include a benzoyl group and a naphthoyl group.
- the alkylsulfonyl group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and examples thereof include a methanesulfonyl group and an ethanesulfonyl group.
- the arylsulfonyl group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and examples thereof include a benzenesulfonyl group, a p-toluenesulfonyl group, and a 1-naphthalenesulfonyl group. .
- the alkoxycarbonyl group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, a methoxycarbonyl group, an ethoxycarbonyl group, and a butoxycarbonyl group.
- the aryloxycarbonyl group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and includes, for example, a phenoxycarbonyl group and a 1-naphthoxycarbonyl group.
- the alkylcarbonyl group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, an acetooxy group, a propionyl group and a butylyl group.
- the arylcarbonyl group preferably has 6 to 30 carbon atoms, more preferably 6 to 15 carbon atoms, and examples thereof include a benzoyl group and a 1-naphthoyl group.
- the urethane group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, a methoxycarbonamide group, a phenoxycarbonamide group, and a methylaminocarbonamide group. No.
- the peridode group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, a methylaminocarboxylic amide group and a dimethylaminocarboxylic amide group. Diphenylaminocarboxylic amide And the like.
- the carbonate group preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, and includes, for example, a methoxycarbonyl group, a phenoxycarbonyloxy group and the like.
- an alkyl group, an aryl group, an alkoxy group, and an aryloxy group are preferable, and an alkyl group and an aryl group are particularly preferable.
- X and Z are preferably a hydrogen atom or an amino group substituted by an alkyl group. X and Z may combine with each other to form a ring. K and n each represent 0 or 1, and preferably 0.
- the addition amount of the compound represented by the general formula (A) can be used in a wide range, but is preferably from 0.001 to 80% by mass, more preferably from 0.1 to 80% by mass based on the ink. 50% by mass, particularly preferably ⁇ 1 to 30% by mass.
- the ejection stability of the ink is improved, and the effect is sustained. Also excellent dischargeability is maintained.
- another dye may be used in combination with the black dye of the present invention to obtain a full-color image and to adjust the color tone.
- dyes that can be used in combination include the following. ,
- the dye used in combination may be a dye in a narrow sense (monodisperse dye) or a pigment.
- a dye-based ink may contain a water-insoluble pigment dispersed therein, or a pigment-based ink may be water-soluble.
- a dye may be contained.
- the total concentration is preferably 0.2 to 20% by mass, more preferably More preferably, it is 0.5 to 15% by mass.
- the dyes which may be used in addition to the dyes represented by the general formula (1) may be used in an ink in an ink set having the same main absorption region or in a different main absorption in combination with the ink set. It is used for the ink or the ink set in the region, and examples of the dyes used in combination thereof include the following. Triarylmethane dyes, anthraquinone dyes, anthrapyridone dyes, azomethine dyes, azo dyes, cyanine dyes, merocyanine dyes, dioxonol dyes, etc.Dyes known in the art can be used alone or in combination. is there.
- Yellow dyes include, for example, aryl or hetaryl azo dyes having phenols, naphthols, anilines, pyrazolones, pyridones, open-chain active methylene compounds as power coupling components.
- An azomethine dye having an open-chain active methylene compound as a force coupling component a methine dye such as a benzylidene dye or a monomethine oxonol dye; a quinoline dye such as a naphthoquinone dye or an anthraquinone dye; Quinophthalene dyes, nitro 'nitroso dyes, acridine dyes, acridinone dyes, and the like.
- the counter cation may be an inorganic metal cation such as alkali metal or ammonium. It may be an organic cation such as pyridine, quaternary ammonium salt, or a polymer having a partial structure thereof.
- magenta dyes for example, aryl or hetarylazo dyes having phenols, naphthols, and anilines as power coupling components; for example, pyrazolones, pyrazomouth triazols as power coupling components; Azomethine dyes having; methine dyes such as arylidene dyes, styryl dyes, merocyanine dyes, quinol dyes; carbonium dyes such as diphenylmethane dyes, triphenylmethane dyes, xanthen dyes, such as naphthoquinones; Examples thereof include quinone dyes such as anthraquinone and anthrapyridone, and condensed polycyclic dyes such as dioxazine dye.
- cyan dyes may exhibit magenta only when a part of the chromophore dissociates, in which case the counter thione may be an alkali metal or an inorganic cation such as ammonium.
- organic cations such as pyridinium and quaternary ammonium salts may be used, and further, polymer cations having these in a partial structure may be used.
- cyan dyes include azomethine dyes such as indoor diphosphorine dyes and indophenol dyes; polymethine dyes such as cyanine dyes, oxonol dyes, and methocyanine dyes; diphenylmethane dye, triphenyl methane dye, and hexane.
- Carbonyl dyes such as ten dyes; phthalocyanine dyes; anthraquinone dyes; for example, aryl or hetarylazo dyes having phenols, naphthols, and aniline as a power-printing component, and indigo-thioindigo dyes. These dyes may exhibit cyan color only after a part of the chromophore has dissociated, in which case the counterforce thione may be metal or metal. It may be an inorganic cation such as ammonium, an organic cation such as pyridinium or a quaternary ammonium salt, or a polymer cation having these in a partial structure.
- a black dye such as a polyazo dye can be used.
- water-soluble dye examples include direct dyes, acid dyes, food dyes, basic dyes, and reactive dyes.
- direct dyes e.g., direct dyes, acid dyes, food dyes, basic dyes, and reactive dyes.
- acid dyes e.g., direct dyes, acid dyes, food dyes, basic dyes, and reactive dyes.
- reactive dyes e.g., direct dyes, acid dyes, food dyes, basic dyes, and reactive dyes.
- other coloring materials may be used together with the dye in order to adjust a color tone for obtaining a full-color image.
- examples of other color materials that can be used in combination include the following pigments.
- pigments used in the present invention commercially available pigments and known pigments described in various documents can be used.
- Color Index Edited by The Society of Dyers and Colorists
- Revised New Edition Pigment Handbook Japan Face Technology Association (ed. 1989)
- Latest Pigment Application Technology CMC Publishing (1986)
- Print Inks” Technology CMC Publishing (1984)
- W. Herbst, Hunger, Inorganic Organic Pigments VH Verl agsgesell schaft N 1993, dried ij), etc.
- Azo pigments (azo lake pigments, insoluble azo pigments, condensed azo pigments, neat azo pigments), polycyclic pigments (phthalocyanine pigments, anthraquinone pigments, perylene and perinone pigments, indigo pigments, quinacridone Pigments such as dioxane-based pigments, isoindolinone-based pigments, quinophthalone-based pigments, diketopi-mouth-based pyrrole-based pigments, etc., dyeing lake pigments (lake pigments of acidic or basic dyes), And inorganic pigments, such as CI Pigment, a yellow pigment.
- polycyclic pigments phthalocyanine pigments, anthraquinone pigments, perylene and perinone pigments, indigo pigments, quinacridone Pigments such as dioxane-based pigments, isoindolinone-based pigments, quinophthalone-based pigments, diketopi-mouth-based pyrrole-
- Red pigments CI Pigment Red 101, 108, etc.
- Yellow pigments CI Pigment Blue 27, 29, 17: 1, etc.
- Black pigments I such as Yellow 34, 37, 42, 53 CI Pigment White 4, 6, 18, 21 and other pigments such as Pigment Black 7 and magnetite.
- a phthalocyanine pigment As the pigment having a preferable color tone for image formation, a phthalocyanine pigment, an anthraquinone-based indanthrone pigment (for example, CI Pigment Blue 60), and a dye lake pigment-based triarylcarbonate pigment are preferable as the blue or cyan pigment.
- Phthalocyanine pigment A preferred example is CI
- red or purple pigments azo pigments (preferred examples are I. Pigment Red 3, 5, 11, 22, 38, 48: 1, 48: 2, 48: 3, 48: 3, 48: 4, 49: 1, 52: 1, 53: 1, 57: 1, 63: 2, 144, 146, 184) C.I.Pigment Red 57 , 146, 184), quinacridone pigments (preferred examples are CI Pigment Red 122, 192, 202, 207, 209, CI Pigment Violet 19, 42, and particularly preferred are GI Pigment Red 122), triarylcarbonate pigments based on dyed reticulated pigments (preferred examples are xanthene-based CI Pigment Red 81: 1, CI Pigment Violet 1, 2, 3, 27, 39) Pigment Violet 23 and 37, etc., dipyrroquinone pigment (for example, C.I. Pigment Red 254), perylene pigment (Eg C.I.
- Pigment Violet 29 anthraquinone pigments (for example, C.I. Pigment Violet 5: 1, 31 and 33), and thioindigo (for example, C.I. Pigment Red 38 and 88) are preferably used.
- yellow pigments examples include azo pigments (preferable examples are monoazo pigment-based CI Pigment Yellow 1, 3, 74, 98, disazo pigment-based CI Pigment Yellow 12, 13, 14, 16, 17, 83, and synthetic azo pigments).
- Unused pigments isoindoline'isoindolinone-based pigments (preferred examples include GI Pigment Yellow 109, 110, 137, 139), quinophthalone pigments (preferred examples include C.I. Pigment Yellow 138) )
- flapantron paints eg CI Pigment Yellow 24
- the black pigment an inorganic pigment (preferably, for example, Ribonbon black, magnetite) Paniline black can be mentioned as a preferable one.
- an orange pigment such as CI Pigment Orange 13, 16
- a pigment such as CI Pigment Green 7
- Pigments that can be used in the present technology may be the above-described naked pigments, or may be surface-treated pigments.
- Surface treatment methods include a method of surface coating a resin or wax, a method of attaching a surfactant, and reactive substances (for example, silane coupling agents, epoxy compounds, polyisocyanate, radicals generated from diazonium salts, etc.). And the like are considered to be attached to the pigment surface, and are described in the following documents and patents.
- self-dispersible pigments prepared by applying the diazodium salt described in the above-mentioned U.S. Patent to carbon black, and encapsulation prepared by the method described in the above-mentioned Japanese patent. Pigments are particularly effective because dispersion stability can be obtained without using an extra dispersant in the ink.
- the pigment may be further dispersed using a dispersant.
- a dispersant various known dispersants may be used according to the pigment to be used, for example, a surfactant-type low-molecular-weight dispersant or a polymer-type dispersant. Examples of the dispersant include those described in JP-A-3-69949, EP 549486 and the like.
- a pigment derivative called a synergist may be added to promote the adsorption of the dispersant to the pigment.
- the particle size of the pigment that can be used in the present technology is preferably in the range of 0.01 to 10 ⁇ m after dispersion, and more preferably in the range of 0.05 to 1.
- Dispersing machines include vertical or horizontal agitator mills. Attritors, colloid mills, ball mills, three-roll mills, and no. Mills, super mills, impellers, dispersers, KD mills, dynatrons, pressurized sodas and the like. Details are described in “Latest Pigment Application Technology” (CMC Publishing, 1986).
- Each constituent ink can contain a surfactant, thereby adjusting the liquid properties of the ink to improve the ejection stability of the ink, improve the water resistance of the image, and improve the print quality of the printed ink. It is possible to provide an excellent effect for preventing the occurrence of the swelling.
- the surfactant examples include anionic surfactants such as sodium dodecylsulfate, sodium dodecyloxysulfonate, sodium alkylbenzenesulfonate, cetylpyridinium chloride, and trimethylcetylammonium.
- anionic surfactants such as sodium dodecylsulfate, sodium dodecyloxysulfonate, sodium alkylbenzenesulfonate, cetylpyridinium chloride, and trimethylcetylammonium.
- Cationic surfactants such as muchloride and terabutylammonium chloride
- nonionic surfactants such as polyoxyethylene nonylphenyl ether, polyoxyethylene naphthyl ether, and polyoxyethylene octylphenyl ether Activators and the like.
- a nonionic surfactant is particularly preferably used.
- the content of the surfactant is 0.001 to 15% by mass, preferably 0.05 to 10% by mass, and more preferably 0.01 to 5% by mass with respect to the ink.
- Each constituent ink can be prepared by dissolving and / or dispersing a constituent such as a dye and a surfactant in an aqueous medium.
- aqueous medium in the present invention means water or a mixture of water and a small amount of a water-miscible organic solvent to which additives such as a wetting agent, a stabilizer, and a preservative are added as necessary. .
- the ink of the present invention preferably further contains at least one organic solvent having a boiling point of at least 150 ° C in the ink, and further contains at least one organic solvent having a boiling point of at least 150 ° C. It is more preferable to contain at least one organic solvent having a boiling point of less than 150 ° G.
- These organic solvents are materials having functions such as an anti-drying agent, a penetration enhancer, and a wetting agent of the ink for ink jet recording in the field, and a water-miscible organic solvent is particularly preferably used. In particular, in order to suppress color bleeding of a drawn image, it is manifested by the fact that these organic solvents are miscible with water.
- Such compounds include alcohols (eg, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol, t-butanol, pentanol, hexanol, cyclohexanol, benzyl alcohol).
- alcohols eg, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol, t-butanol, pentanol, hexanol, cyclohexanol, benzyl alcohol).
- Polyhydric alcohols for example, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, butylene glycol, hexandiol, pentadiol, glycerin, hexantriol, Thiodiglycol
- glycol derivatives eg, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene
- the stability of the ink is further increased, and the ejection stability is improved. Also improve.
- the low boiling point solvent having a boiling point of less than 150 ° C include, among the above examples, methanol, ethanol, n-propanol, i-propanol, n-butanol, 2-butanol, and t. -Butanol, 2-methoxyethanol, 1-methoxy-2-propanol, 2-methoxy-1-propanol, acetone, acetate nitrile and the like.
- solvents that do not contain hetero atoms other than oxygen atoms are preferable, and alcohol solvents are particularly preferable.
- the organic solvent having a boiling point of 150 ° C. or higher can be selected from the above-mentioned ones. In this case, too, a solvent containing no hetero atom other than an oxygen atom is preferable, and an alcohol solvent is particularly preferable.
- These water-miscible organic solvents are preferably contained in the ink in a total amount of 5 to 60% by mass, particularly preferably 10 to 45% by mass.
- the ratio of the low-boiling solvent in the total organic solvent is preferably 1 to 80% by mass, particularly preferably 5 to 50% by mass in the total organic solvent.
- the discharge stability is improved.
- increasing the amount of the water-miscible organic solvent has the effect of promoting coloration. Also have. Therefore, its content is restricted from the viewpoint of preventing color bleeding, so that it is generally required to be 20% by mass or less based on the total mass of the ink composition.
- adding a small amount of the compound of the general formula (A) It has been found that it is possible to achieve both suppression of character appearance and securing of ejection stability.
- the content of the water-miscible high-boiling organic solvent is adjusted to 20% by mass or more. Also, bleeding can be prevented, and both suppression of color printing and ensuring ejection stability can be achieved.
- the content of the water-miscible low boiling point organic solvent is 50% by mass or less, and preferably 20 to 35% by mass.
- the ink liquid of the present invention in the case of a water-soluble ink, it is preferable to first dissolve it in water. After that, various solvents and additives are added, dissolved and mixed to make a uniform ink liquid.
- dissolution methods such as dissolution by stirring, dissolution by ultrasonic irradiation, and dissolution by shaking can be used.
- the stirring method is particularly preferably used.
- various methods such as flow stirring known in the art and stirring using a shearing force using an inverted agitator or a dizorba can be used.
- a stirring method utilizing a shearing force with the bottom of the container such as a magnetic stirrer, can be preferably used.
- the dye that can be used in the present invention is an oil-soluble dye
- it can be prepared by dissolving the oil-soluble dye in a water-insoluble high-boiling organic solvent and emulsifying and dispersing the dye in an aqueous medium. it can.
- the boiling point of the water-insoluble, high-boiling organic solvent used in the present invention is 150 ° C. or higher, preferably 170 ° C. or higher.
- phthalic acid esters eg, dibutylphthalate, dioctylphthalate, dicyclohexylphthalate, di-2-ethylhexylphthalate, decylphthalate, bis (2,4-ditert-amylphenyl) isophthalate
- esters of phosphoric acid or phosphonic acid eg, diphenyl phosphate, triphenyl phenol, tricresyl phosphate
- 2-ethylhexyldiphenyl phosphate di-butyl butyl phosphate, tricyclohexyl phosphate, tri-2-ethylhexyl phosphate, tridodecyl phosphate, di-2-ethylhexyl phosphate Phenyl phosphate
- benzoic acid ester eg, 2-ethylhexylbe
- water-insoluble high-boiling organic solvents may be used alone or in a mixture of several types [for example, tricresyl phosphate and dibutyl phthalate, trioctyl phosphate and di (2-ethylhexyl) sebacate]. , Dibutyl phthalate and poly (N-t-butyl acrylamide)].
- JP-A-48-47335 JP-A-50-26530, JP-A-51-25133, JP-A-51-26036, JP-A-51-27921, JP-A-51-27922, JP-A-51-U9028 Nos. 52-46816, 53-1520, 53-1521, 53-15127, 53-146622. 54-91325, 54-106228, 54-118246, 54 No. 55-59464, same
- the high-boiling organic solvent is used in an amount of 0.01 to 3.0 times, preferably 0.01 to 1.0 times the mass of the oil-soluble dye by mass.
- the oil-soluble dye and the high boiling point organic solvent are used by emulsifying and dispersing in an aqueous medium.
- a low-boiling organic solvent can be used in some cases from the viewpoint of emulsification.
- the low boiling organic solvent is an organic solvent having a boiling point of about 30 ° C or more and 150 ° C or less at normal pressure.
- esters eg, ethyl acetate, butyl acetate, ethyl propionate, ethoxyxyl acetate, methyl cellosolve acetate
- alcohols eg, isopropyl alcohol, n-butyl alcohol, secondary butyl alcohol
- kettle eg, methyl isobutyl ketone, methyl ethyl ketone, cyclohexanone
- amides eg, dimethylformamide, N-methylpyrrolidone
- ethers eg, tetrahydrofuran, dioxane
- the like are preferably used. But not limited to o
- Emulsification dispersion involves dispersing an oil phase, in which a dye is dissolved in a mixed solvent of a high-boiling organic solvent and, in some cases, a low-boiling organic solvent, in an aqueous phase mainly composed of water, to create fine oil droplets of the oil phase. It is done for.
- additives such as a surfactant, a wetting agent, a dye stabilizer, an emulsion stabilizer, a preservative, and a fungicide, which will be described later, are added to one or both of the water phase and the oil phase as necessary. be able to.
- an oil phase is generally added to an aqueous phase, but a so-called phase inversion emulsification method in which an aqueous phase is dropped into an oil phase can also be preferably used.
- various surfactants can be used.
- fatty acid salts alkyl sulfate salts, alkylbenzene sulfonates, alkyl naphthalene sulfonates, dialkyl sulfosuccinates, alkyl phosphate esters, naphthalene sulfonate formalin condensates, polyoxyethylene alkyl sulfates, etc.
- Anionic surfactants polyoxyethylene alkyl ethers, polyoxyethylene alkyl aryl ethers, polyoxyethylene fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkylamines, glycerides
- Nonionic surfactants such as fatty acid esters and polyethylene propylene block copolymers are preferred.
- acetylene-based polyoxyethylene oxide surfactant SU RFYNOLS Air Products & Chemicals 1s
- an amine-type amphoteric surfactant such as N, N-dimethyl-N-alkylamine-type oxide is also preferable.
- those described as surfactants in JP-A-59-157,636, pages (37) to (38), Research, Disclosure No. 308 119 (1989). Can also be used.
- a water-soluble polymer can be added in combination with the above-mentioned surfactant.
- the water-soluble polymer polyvinyl alcohol, polyvinyl pyrrolidone, polyethylene oxide, polyacrylic acid, polyacrylamide, and copolymers thereof are preferably used. It is also preferable to use natural water-soluble polymers such as polysaccharides, casein, and gelatin.
- acrylates, methacrylates, vinyl esters, acrylamides, methacrylamides, olefins, which are substantially insoluble in an aqueous medium Polyvinyl, polyurethane, polyester, polyamide, polyamide, polycarbonate, etc. obtained by polymerization of styrenes, pinyl ethers, and acrylonitriles can also be used in combination. These polymers one one S 0 2 -, - preferred to contain C 00-. When these polymers that are substantially insoluble in an aqueous medium are used in combination, they are preferably used in an amount of 20% by mass or less, more preferably 10% by mass or less of the high boiling point organic solvent.
- the volume average particle size is preferably 1 jum or less, more preferably 5 to 1 O Onm.
- the methods of measuring the volume average particle size and the particle size distribution of the dispersed particles include static light scattering method, dynamic light scattering method, centrifugal sedimentation method, and experimental chemistry course, 4th edition, pp. 417-418. It can be easily measured by a known method, for example, using a known method. For example, dilute the ink with distilled water so that the particle concentration in the ink is 0.1 to 1% by mass-using a commercially available volume average particle size analyzer (for example, Microtrac UPA (manufactured by Nikkiso Co., Ltd.)) Can be easily measured. Further, the dynamic light scattering method utilizing the laser-Doppler effect is particularly preferable since the particle size can be measured down to a small size.
- the volume average particle size is the average particle size weighted by the particle volume. In a set of particles, the sum of the diameters of the individual particles multiplied by the volume of the particles is divided by the total volume of the particles.
- the volume average particle size is described on page 119 of "Chemistry of Polymer Latex" (Souichi Muroi, Polymer Publishing Association).
- a known centrifugation method, a microfiltration method, or the like can be used as a method for removing these coarse particles. These separation means may be performed immediately after the emulsification and dispersion, or may be performed immediately after the various additives such as a wetting agent and a surfactant are added to the emulsified dispersion and then filled into the ink cartridge.
- a mechanical emulsifier can be used as an effective means for reducing the average particle size and eliminating coarse particles.
- a known device such as a simple stirrer, an impeller stirring method, an in-line stirring method, a mill method such as a colloid mill, or an ultrasonic method can be used, but the use of a high-pressure homogenizer is particularly preferable. is there.
- a high-pressure homogenizer is described in detail in US Pat. No. 4,533,254 and Japanese Patent Application Laid-Open No. 6-47264, but commercially available devices include a Gorin homogenizer- (A.P.VGAULININC.), A microfluidizer. MICROFLUIDEXINC., ULTIMIZER I (Sugino Machine Co., Ltd.), etc.
- a high-pressure homogenizer having a mechanism for forming fine particles in an ultrahigh-pressure jet stream, such as described in US Pat. No. 5,720,551, is particularly effective for emulsification and dispersion of the present invention.
- a DEBE2000 BEEINTTERNANATIONALLDTD.
- the pressure at the time of emulsification by a high-pressure emulsifying and dispersing device is 50 MPa or more, preferably 60 MPa or more, more preferably 180 MPa or more.
- emulsifying apparatuses it is a particularly preferable method to use two or more emulsifying apparatuses in combination, for example, by emulsifying with a stirring emulsifier and then passing through a high-pressure homogenizer. It is also preferable to once emulsify and disperse in these emulsifiers, add additives such as wetting agents and surfactants, and then pass the high-pressure homogenizer again while filling the cartridge with the ink. Is a new way.
- a low-boiling organic solvent is contained in addition to the high-boiling organic solvent, it is preferable to remove the low-boiling solvent from the viewpoint of stability of the emulsion and safety and health.
- Various known methods can be used to remove the low boiling point solvent depending on the type of the solvent. That is, evaporation method, vacuum evaporation method, ultrafiltration method and the like. This step of removing the low boiling organic solvent is performed immediately after the emulsification, It is preferred to carry out as soon as possible.
- the ink jet recording ink set obtained by the present invention and its constituent ink have a drying inhibitor for preventing clogging due to the drying operation at the ink ejection port, and a penetrating agent for penetrating the ink into paper.
- a drying inhibitor for preventing clogging due to the drying operation at the ink ejection port
- a penetrating agent for penetrating the ink into paper.
- the additives can be appropriately selected and used in an appropriate amount.
- a water-soluble organic solvent having a lower vapor pressure than water is preferable.
- Specific examples include ethylene glycol, propylene glycol, diethylene glycol, polyethylene glycol, thiodiglycol, dithiglycol, 2-methyl-1,3-propanediol, 1,2,6-hexanol.
- Polyhydric alcohols such as acetylene glycol derivatives, glycerin, trimethylolpropane, etc., ethylene glycol monomethyl (or ethyl) ether, diethylene glycol monomethyl (or ethyl) ether, and triethylene glycol monoethyl (or butyl) Lower alkyl ethers of polyhydric alcohols such as ethers, and heterocycles such as 2-pyrrolidone, N-methyl-12-pyrrolidone, 1,3-dimethyl-12-imidazolidinone, and N-ethylmorpholine , Sulfolane, dimethyls Hokishi de, sulfur-containing compounds such as 3-sulfolene, Jiase Ton'aru call, polyfunctional compounds such as diethanol ⁇ Min, and urea derivatives.
- These glycerin among the polyhydric alcohol is more preferably c
- These drying inhibitors may be used in combination of two or more may be used alone and diethylene glycol.
- Examples of the penetration enhancer used in the present invention include alcohols such as ethanol, isopropanol, butanol, di (tri) ethylene glycol monobutyl ether, and 1,2-hexanediyl sodium peryl sulfate, and maleic acid.
- Alcohols such as ethanol, isopropanol, butanol, di (tri) ethylene glycol monobutyl ether, and 1,2-hexanediyl sodium peryl sulfate, and maleic acid.
- Sodium or a nonionic surfactant can be used. These have a sufficient effect when contained in the ink in an amount of 10 to 30% by mass, and are preferably used within the range of the addition amount which does not cause printing bleeding or paper loss (print-through).
- Examples of the ultraviolet absorber used in the present invention to improve the storability of an image include JP-A-58-18567, JP-A-6-1905337, and JP-A-Hei.
- organic and metal complex-based antifading agents include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, and heterocycles.
- metal complex include a nickel complex and a zinc complex. More specifically, Research Disclosure No. 1 76
- antifungal agent used in the present invention examples include sodium dehydroacetate, sodium benzoate, sodium pyridine thione-1-oxide, p-hydroxybenzoic acid ethyl ester, and 1,2-pentene.
- Isothiazolin-3-one and salts thereof may be mentioned. These are preferably used in the ink in an amount of 0.02 to 5.00% by mass. Details of these are described in "Encyclopedia of Bacterial and Fungicides" (edited by the Japanese Society of Bacteria and Fungi).
- the protective agent examples include, for example, acid sulfite, sodium sodium sulfate, titanium ammonium glycolate, diisopropylammonium nitrite light, pentaerythritol tetranitrate, dicyclohexylammonium nitrite And benzotriazole. These are preferably used in the ink in an amount of 0.02 to 5.00% by mass.
- the pH adjuster used in the present invention can be suitably used in terms of pH adjustment, dispersion stability provision, etc., and the pH of the ink at 25 ° C is adjusted to 4 to 11. It is preferred that If the pH is less than 4, the solubility of the dye is reduced and the nozzle is easily clogged. If it exceeds 11, the water resistance tends to deteriorate.
- pH adjusters include organic bases and inorganic alkalis as basic ones, and organic acids and inorganic acids as acidic ones.
- Examples of the organic base include triethanolamine, jetanolamine, N-methyljetanolamine, dimethylethanolamine and the like.
- Examples of the inorganic alkali include hydroxides of alkali metals (for example, sodium hydroxide, Lithium carbonate, hydroxylating water, etc.), carbonates (eg, sodium carbonate, sodium hydrogen carbonate, etc.), ammonium and the like.
- Examples of the organic acid include acetic acid, propionic acid, trifluoroacetic acid, and alkylsulfonic acid.
- Examples of the inorganic acid include hydrochloric acid, sulfuric acid, and phosphoric acid.
- anionic surfactants include fatty acid salts, alkyl sulfate salts, alkyl benzene sulfonates, alkyl naphthalene sulfonates, dialkyl sulfosuccinates, alkyl phosphate salts, naphthalene sulfonic acid formalin condensates, and polyoxyethylene alkyls.
- nonionic surfactant examples include polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, and polyoxyethylene sorbitan fatty acid.
- SURFYNOLS AirPRodcuts & Chemicals
- amine oxide-type amphoteric surfactants such as N, N-dimethyl-1-N-alkylamine oxide.
- surfactants described in JP-A-59-157,636, pages (37) to (38), Research ⁇ Disclosure No. 308 119 (1989) Can also be used.
- the surface tension of the ink of the present invention is preferably 20 to 60 mN / m with or without using them. Further, it is preferably 25 to 45 mN / m.
- the viscosity of the ink used in the present invention is preferably 30 mPas or less. Further, since it is more preferable to adjust the viscosity to 20 mPa ⁇ s or less, a viscosity modifier may be used for the purpose of adjusting the viscosity.
- a viscosity modifier include water-soluble polymer-nonionic surfactants such as celluloses and polyvinyl alcohol. For more details, see Chapter 9 of “Viscosity Control Technology” (Technical Information Association, 1999), and “Chemicals for Inkjet Printers (98 Supplement), Development Trends of Materials, Prospects Survey 1” (Scheme 1 1997 Year) pages 162 to 174.
- various cations, anions, and nonionic surfactants described above are required as dispersants and dispersion stabilizers, and chelating agents represented by fluorine, silicone compounds, and EDTA are also required as defoamers.
- chelating agents represented by fluorine, silicone compounds, and EDTA are also required as defoamers.
- the ink liquid of the present invention in the case of a water-soluble ink, it is preferable to first dissolve it in water. After that, add various solvents and additives, dissolve and mix Use ink liquid.
- the stirring method is particularly preferably used.
- various methods such as flow stirring known in the art and stirring using shearing force using an inverted agitator or a dizorba can be used.
- a stirring method utilizing a shearing force with the bottom of the container such as a magnetic stirrer, can also be preferably used.
- the recording paper and the recording film used in the image recording method of the present invention will be described.
- the support for recording paper and film consists of chemical pulp such as LBKP, NBKP, etc., mechanical pulp such as GP, PGW, RMP, TMP, CTMP, CMP, CGP, waste paper pulp such as DIP, etc.
- Mixing additives such as known pigments, binders, binders, sizing agents, fixing agents, cationic agents, paper strength enhancers, etc., and those manufactured by various equipment such as Fourdrinier paper machines and circular net paper machines can be used. It is.
- any of synthetic paper and plastic film sheets may be used.
- the support preferably has a thickness of 10 to 250 m and a basis weight of 10 to 25 ⁇ 9 / ⁇ 2. .
- An image receiving material may be provided by directly providing an image receiving layer and a back coat layer on a support, or a size press or anchor coat layer provided with starch, polyvinyl alcohol, etc., and then an image receiving layer and a back coat layer are provided. It may be a material. Further, the support may be subjected to a flattening process using a calendar device such as a machine calendar, a TG calendar, a soft calendar, or the like.
- polyolefin eg, polyethylene, polystyrene, polyethylene terephthalate, polybutene, and their copolymers
- a white pigment eg, titanium oxide, zinc oxide
- a coloring dye eg, cobalt blue, ultramarine, neodymium oxide
- a white pigment is preferred (a white pigment, Calcium carbonate, Kaolin, Talc, Clay, Diatomaceous earth, Synthetic amorphous silica, Aluminum silicate, Magnesium silicate, Calcium
- porous white inorganic pigments are particularly preferred.
- synthetic amorphous silica having a large pore area is particularly preferable, etc.
- Synthetic amorphous silica is produced by a dry production method. Obtained Both anhydrous silica and hydrous silicic acid obtained by a wet production method can be used, but it is particularly preferable to use hydrous silicic acid. Two or more of these pigments may be used in combination.
- aqueous binder contained in the image receiving layer examples include polypinyl alcohol, silanol-modified polyvinyl alcohol, starch, cationized starch, casein, gelatin, carboxymethylcellulose, hydroxyshethylcellulose, polyvinylpyrrolidone, and polyalkylene. And water-soluble polymers such as oxoxides and polyalkylene oxide derivatives, and water-dispersible polymers such as styrene-butadiene latex and acrylemulsion. These aqueous binders can be used alone or in combination of two or more. In the present invention, among these, polyvinyl alcohol and silanol-modified polyvinyl alcohol are particularly preferable in terms of adhesion to the pigment and peel resistance of the ink receiving layer.
- the image receiving layer can contain a mordant, a water-proofing agent, a light-fastness improver, a surfactant, a hardener and other additives in addition to the pigment and the aqueous binder.
- the mordant added to the image receiving layer is preferably immobilized.
- a polymer mordant is preferably used.
- An image receiving material containing a polymer mordant described on pages 211 to 215 of JP-A No. 1-11636 is particularly preferred.
- the use of the polymer mordant described in the publication makes it possible to obtain images of excellent image quality and to improve the light fastness of the images.
- the water-proofing agent is effective in making the image water-resistant, and as such a water-proofing agent, particularly a resin having a high strength is desirable.
- a cationic resin include polyamide polyamine epichlorohydrin, polyethyleneimine, polyamine sulfone, dimethyldiarylammonium chloride polymer, cationic polyacrylamide, and lipophilicity.
- polyamide polyamine epichlorohydrin is particularly preferred.
- the content of these cationic resins is preferably from 1 to 15% by mass, more preferably from 3 to 10% by mass, based on the total solid content of the ink receiving layer. Is preferred.
- the light resistance improver examples include zinc sulfate, zinc oxide, hinderamine antioxidants, and benzotriazole-based ultraviolet absorbers such as benzophenone. Of these, zinc sulfate is particularly preferred.
- Surfactants function as coating aids, release improvers, slipperiness improvers, or antistatic agents.
- the surfactants are described in JP-A Nos. 62-173,463 and 62,183,457.
- An organic fluoro compound may be used in place of the surfactant.
- the organic compound is preferably hydrophobic.
- examples of the organic fluoro compound include a fluorinated surfactant, an oily fluorinated compound (eg, fluorinated oil) and a solid fluorinated compound resin (eg, tetrafluoroethylene resin).
- a fluorinated surfactant e.g, fluorinated oil
- a solid fluorinated compound resin eg, tetrafluoroethylene resin.
- the materials described on page 222 of JP-A No. 11-13636 can be used.
- additives added to the image receiving layer include pigment dispersants, thickeners, defoamers, dyes, fluorescent whitening agents, preservatives, pH regulators, matting agents, hardeners, and the like.
- Can be The number of the ink receiving layers may be one or two.
- the recording paper and the recording film may be provided with a back coat layer.
- examples of components that can be added to this layer include a white pigment, an aqueous binder, and other components.
- white pigments contained in the backcoat layer include light calcium carbonate, heavy calcium carbonate, kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, and sachin white.
- white inorganic pigments such as magnesium hydroxide, organic pigments such as styrene-based plastic pigments, acrylic-based plastic pigments, polyethylene, microcapsules, urea resins, and melamine resins.
- the aqueous binder contained in the back coat layer includes styrene / maleate copolymer, styrene / acrylate copolymer, polyvinyl alcohol, silanol-modified polypinyl alcohol, starch, cationization Water-soluble polymers such as starch, casein, gelatin, carboxymethylcellulose, hydroxyshethylcellulose, polyvinylpyrrolidone, styrene butadiene latex, acryl emma And water-dispersible polymers such as luzion.
- Other components contained in the backcoat layer include an antifoaming agent, an antifoaming agent, a dye, an optical brightener, a preservative, and a waterproofing agent.
- a polymer fine particle dispersion may be added to the constituent layers (including the back layer) of the ink jet recording paper and the recording film.
- the polymer fine particle dispersion is used for the purpose of improving film properties such as dimensional stability, curling prevention, adhesion prevention, and film cracking prevention.
- the polymer fine particle dispersion is disclosed in JP-A-62-245528, JP-A-62-131316648, and JP-A-62-1010666. There is a description. Addition of a polymer fine particle dispersion having a low glass transition temperature (40 ° C or less) to a layer containing a mordant can prevent cracking and curling of the layer. Curling can also be prevented by adding a polymer-fine particle dispersion having a high glass transition temperature to the back layer.
- the ink jet recording method there is no limitation on the ink jet recording method, and a known method, for example, a charge control method for discharging ink using electrostatic attraction, a drop-on-demand method using a vibration pressure of a piezo element (pressure pulse) Method), an acoustic ink jet method in which an electric signal is converted into an acoustic beam, and the ink is irradiated to the ink to discharge the ink using radiation pressure.
- a thermal ink that heats ink to form bubbles and uses the generated pressure. Used for the jet (bubble jet) method.
- the ink jet recording method includes a method of ejecting a large number of low-density inks called photo inks in a small volume, a method of improving the image quality by using a plurality of inks having substantially the same hue and different densities, and a method of colorless and transparent ink. Are included.
- the ink jet recording ink of the present invention can be used for purposes other than the ink jet recording.
- it can be used as a display image material, an image forming material of an interior decoration material, and an image forming material of an outdoor decoration material.
- Display image materials include posters, wallpapers, decorative items (such as figurines and dolls), commercial flyers, wrapping paper, wrapping materials, paper bags, plastic bags, package materials, signage, transportation (automobiles, buses) , Trains, etc.) refers to various objects such as images drawn or attached to the side of the car, clothes with a logo, and so on.
- the dye of the present invention is used as a material for forming a display image, the image is not limited to an image in a narrow sense, and includes all patterns of a human-recognizable dye, such as abstract designs, characters, and geometric patterns.
- interior decoration materials it refers to various items such as wallpaper, decorative accessories (such as figurines and dolls), lighting equipment members, furniture members, floor and ceiling design members.
- the image is not limited to an image in a narrow sense and includes all patterns of a dye that can be recognized by humans, such as abstract designs, characters, and geometric patterns.
- Outdoor decoration materials refer to various materials such as wall materials, roofing materials, signboards, gardening materials, outdoor decoration accessories (such as figurines and dolls), and members of outdoor lighting equipment.
- the image includes not only images in a narrow sense but also all patterns of dyes that can be recognized by humans, such as abstract designs, characters, and geometric patterns. .
- examples of media on which patterns are formed include various materials such as paper, fibers, cloths (including nonwoven fabrics), plastics, metals, and ceramics.
- the colorant can be immobilized in the form of mordant, printing, or a reactive dye having a reactive group introduced therein.
- dyeing is preferably performed in a mordant form.
- Deionized water was added to the following components to make 1 liter, and the mixture was stirred for 1 hour while heating at 30 to 40 ° C. Thereafter, the pH was adjusted to 6.0 using 1 mol / l hydrochloric acid or a hydroxylating rim, and the mixture was filtered under reduced pressure through a micro-filter with a micropore filter having an average pore diameter of 0.25 m to obtain black ink Bk-101. Prepared.
- Black dye of the present invention (L: long wave side) (B1) 75g / l
- Black dye of the present invention (S: short wave side) (BS-1) 30g / l
- DEG Diethylene glycol
- the oxidation potential (Eox) of the black dyes used here (L: BL-1 and S: BS-1) is determined by the dropping mercury electrode method using a 1 mmol / l aqueous solution of the dye, Cyclic voltammetry It was 1.0 V (vs SCE) or more in both the method and the rotating ring disk electrode method.
- the following dye B is used as the long-wavelength black dye (B) having a half-value width of the diluted solution standardization spectrum of 100 nm or less.
- the oxidation potential of the long-wavelength black dye (B) was also 1.0 V (vs SCE) or less.
- a black ink cartridge of PM-950C manufactured by Epson Corporation was used as a reference type of ink.
- black inks Bk-102 to 104 shown in Table 1 below were prepared.
- urea corresponding to the compound of the general formula (A) described in the present invention is used for Bk-101, the inks Bk-105 to 110 in which this additive is changed were also prepared.
- Bk-106 (this invention) BL-1, BS-1
- Bk-il0 (this invention) BL-l, BS-2
- these inks are loaded into the black ink cartridge of Epson's Inkjet Printer PM-950C, and other color inks are printed using the PM-950C ink to produce gray image patterns. And an image in which the character pattern was incorporated was printed. This also includes JIS code 2223 black square symbols printed at 48 points. Separately, the color tone of the image was visually evaluated using an IS0 / JIS 12640 test image chart.
- the image receiving sheet was printed on an ink jet paper glossy paper “Saisai” manufactured by Fuji Photo Film Co., Ltd., and evaluated for image quality (visual evaluation) and ink dischargeability and image fastness.
- Ink jet paper photo glossy paper “Isai” is a recording paper having an image receiving layer containing a white inorganic pigment on a support.
- the light fastness is measured by measuring the image density Ci immediately after printing with a reflection densitometer (X-Rite 310) using an optical system for measuring the reflection density according to the international standard ISO-5. Xenon light (85,000 lux) was applied to the image using a light fastness tester manufactured by Ric Device Co., Ltd. (Atlas Weather-0-meter C165).
- the image density C f was measured again, and the residual dye ratio (100 ⁇ C f / C i) was determined and evaluated.
- the reflection ratio of the dye was evaluated at three points of reflection density of 1, 1.5, and 2. At any of the densities, A was determined when the residual rate of the dye was 70% or more, and B was determined when the two points were less than 70%. C when the concentration was less than 70% at all concentrations.
- the concentration before and after the sample was stored for 10 days at 80 ° C and 70% RH was measured with an X-rite 310 to evaluate the residual dye ratio. Evaluate the residual image rate of the dye at three points of reflection density of 1, 1.5, and 2. At any of the densities, A indicates that the residual rate of the dye is 90% or more, and B indicates that the percentage of the two points is less than 90%. C when the concentration was less than 90% at all concentrations.
- the photo glossy paper on which the image was formed was allowed to stand in a box where the ozone gas concentration was set at 0.5 ppm for 7 days, and the image density before and after being left under the ozone gas was measured using a reflection densitometer ( X—Rite 310) and evaluated as the residual dye ratio. The reflection density was measured at three points of 1, 1.5 and 2.0.
- the ozone gas concentration in the box was set using an APPLICS ozone gas monitor (model: OZG-EM-01).
- A was evaluated when the residual ratio of the dye was 80% or more, B when less than 80% at 1 or 2 points, and C when less than 70% at all concentrations.
- a black ink Bk-201 of the following formulation was prepared in the same manner as in the preparation of Bk-101 in Example 1.
- Black dye of the present invention (L: long wave side) (BL-1) 75 g / 1 ( ⁇ max: 589 nm, W A , l / 2 : 125 nm)
- Black dye of the present invention (S: short wave side) (BS-1) 30 g / 1
- DEG Dethylene glycol
- This black ink Bk-201 is prepared using the black dyes shown in Table 3 to obtain black ink Bk-202-207. (The composition other than the dye was the same as that of Bk-201.)
- a long-wavelength black dye (A) having an oxidation potential (E ox) of 1.0 V (V s SCE) or less which was used in Comparative Example 1 in Example 1, and a normalized solution of a dilute solution
- the short-wavelength black dye (C) having a value of 1,0 V (V s SCE) or less was used.
- the structure of the black dye is as follows
- both the black dyes (L: BL-1 and S: BS-1) and the comparative dyes (A), (B) and (C) used herein are as described above.
- the oxidation potential (EoX) of the black dye (S: B-2, S: BS-2) is determined by the above-described measurement method, and is determined to be no less than 1.0 V (Vs SCE). confirmed.
- BL- 2 of A max is 5 9 0 nm
- W A, 1/2 is 1 2 2 nm
- entering max of BS- 2 was 4 5 7 nm.
- the built-in image was printed. This also includes JIS code 2223 black square symbols printed at 48 points. Separately, the color tone of the image was visually evaluated using a test image chart of ISO / JIS 12640.
- the image receiving sheet was printed on an ink-painted glossy paper “Saisai” manufactured by Fuji Photo Film Co., Ltd., and the same image quality, ink ejection property and image quality as those performed in Example 1 were used. The robustness was evaluated.
- the pattern image is subjected to reflection densities of three colors C (cyan), M (magenta) and Y (yellow) using an X-rite 310 TR densitometer incorporating a status A filter.
- D R , D G , and D B were also measured.
- the ratios (R) for Bk-102 to 4 were all 1.25 or more, indicating that the discoloration balance of the black image was greatly disrupted.
- a black ink solution Bk-301 having the following formulation was prepared in the same manner as in the preparation of Bk-101 in Example 1.
- Black dye of the present invention (L: long wave side) (BL-1) 75g / l
- Black dye of the present invention (S: short wave side) (BS-1) 30g / l
- DEG Diethylene glycol
- Trietanoamine 8 g / Safinolol STG (SW) 10 g / 1 Black dye used here (L: BL-1, 2 and S: BS-1, 2) and comparative dyes (A) (B) (C) The above.
- Epson PM-950C black ink cartridge was used as a reference type of ink.
- the following black inks were prepared.
- the type of water used in the preparation was changed, and the dye used was desalted and purified.
- the following ink was prepared with the same composition as Bk-301 except for the additive composition of the dye.
- Table 6 shows the obtained results. (Table 6)
- An ink having the same composition as B k—201 in Example 2 was prepared by the same preparation method, and was used as a black ink liquid B k—401.
- the black ink shown in Table 7 below was prepared by changing the dye of the black ink Bk-401 to the dyes BL-1, BS-1, A, B and C used in the preceding examples. (Table 7)
- TEG Triethylene glycol DMF: N, N-dimethylformamide
- the boiling point of the solvent used in the solvent column of BK-107 ⁇ 110 is 150. C or less
- Bk-401 uses four types of high-boiling solvents, of which inks with modified polyethylene glycol (DEG) and 2-pyrrolidone (PRD) -405-410 were also made respectively.
- DEG polyethylene glycol
- PRD 2-pyrrolidone
- the pattern images are combined with a status A filter, and the reflection densities (D R , D G ) of the three colors C (cyan), M (magenta) and Y (yellow) are measured using an X-rite 310 TR densitometer.
- D B were also measured at the same time, and the forced fading rate constant (k RJ k G, the k B), in the system using the black ink of the present invention, the ratio between the maximum value and the minimum value (R) was in all one. 0 5 below.
- the ratios (R) of Bk-402 to 4 were all 1.25 or more, and it was found that the fading balance of the black image was greatly lost.
- a black ink Bk-501 of the following formulation was prepared in the same manner as in the preparation of Bk-101 in Example 1.
- Black dye of the present invention (L: long wave side) (BL-1) 75 g / 1
- Black dye of the present invention (S: short wave side) (BS-1) 30 g / 1
- DEG Dethylene glycol
- a black ink power cartridge of PM-950C manufactured by Epson Corporation was used as a reference tie for the ink.
- four kinds of high boiling solvents were used for Bk-501, and among these, inks Bk-505 to 510 in Table 9 in which 2-pyrrolidone was changed were also prepared.
- An ink having the same composition as Bk-101 in Example 1 was prepared by the same preparation method, and this was used as a black ink liquid Bk-601.
- the black dye (L: BL-1, S: BS-1) used in Example 1 and the comparative dyes (A), (B), and (C), and the oxidation potential and the spectral absorption characteristic preferable for the present invention were also shown.
- Black ink (L: BL-2, S: BS-2) and a compound of the general formula (A) are also combined to obtain the black ink Bk-602-Bk of Table 11 below. -6 10 was produced.
- the aqueous ink of the present invention which contains a dye having an Amax of 500 nm to 700 nm in the absorption spectrum in an aqueous solution and a normalized half width of 100 nm or more, has excellent ejection stability and fastness to light, heat, and oxidation. But both are excellent. Further, dyes, particularly dyes of the spectral characteristics, the oxidation potential 1 containing the ink. 0 when a VV s SCE or more dyes, 2) fading rate constant is 5.
- the ink jet recording ink of the present invention described above is an ink which can obtain a good image quality with a neutral gray gradation even in visual evaluation.
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Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/528,772 US7303272B2 (en) | 2002-09-25 | 2003-07-01 | Black ink for inkjet recording and inkjet recording method |
EP03738619A EP1544260A4 (en) | 2002-09-25 | 2003-07-01 | BLACK INK FOR INK JET PRINTING AND INK JET PRINTING METHOD |
Applications Claiming Priority (12)
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JP2002279393A JP4538186B2 (ja) | 2002-09-25 | 2002-09-25 | インクジェット記録用ブラックインク |
JP2002-279393 | 2002-09-25 | ||
JP2002282840A JP2004115702A (ja) | 2002-09-27 | 2002-09-27 | インクジェット記録用インク |
JP2002-282841 | 2002-09-27 | ||
JP2002282841A JP2004115703A (ja) | 2002-09-27 | 2002-09-27 | インクジェット記録用インク |
JP2002-282840 | 2002-09-27 | ||
JP2002-287255 | 2002-09-30 | ||
JP2002285487A JP4538187B2 (ja) | 2002-09-30 | 2002-09-30 | インクジェット記録用ブラックインク |
JP2002285488A JP2004123772A (ja) | 2002-09-30 | 2002-09-30 | インクジェット記録用ブラックインク |
JP2002-285488 | 2002-09-30 | ||
JP2002-285487 | 2002-09-30 | ||
JP2002287255A JP4538188B2 (ja) | 2002-09-30 | 2002-09-30 | インクジェット記録用インク |
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US (1) | US7303272B2 (ja) |
EP (1) | EP1544260A4 (ja) |
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JP4452437B2 (ja) | 2002-09-30 | 2010-04-21 | 富士フイルム株式会社 | インクジェット記録用ブラックインク |
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WO2005033223A1 (en) * | 2003-10-02 | 2005-04-14 | Fuji Photo Film Co., Ltd. | Ink for inkjet, ink set for inkjet, and inkjet recording method |
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- 2003-07-01 WO PCT/JP2003/008375 patent/WO2004029166A1/ja not_active Application Discontinuation
- 2003-07-01 KR KR1020057005166A patent/KR100825368B1/ko not_active IP Right Cessation
- 2003-07-01 EP EP03738619A patent/EP1544260A4/en not_active Withdrawn
- 2003-07-01 US US10/528,772 patent/US7303272B2/en not_active Expired - Fee Related
- 2003-07-01 CN CNB038229838A patent/CN100569873C/zh not_active Expired - Fee Related
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7431760B2 (en) * | 2003-06-18 | 2008-10-07 | Fujifilm Corporation | Ink and ink-jet recording ink |
US7776144B2 (en) * | 2003-10-23 | 2010-08-17 | Fujifilm Corporation | Ink and ink set for inkjet recording |
US7491266B2 (en) * | 2003-11-04 | 2009-02-17 | Fujifilm Corporation | Black ink and ink set for inkjet recording |
US7402201B2 (en) * | 2004-03-22 | 2008-07-22 | Fujifilm Corporation | Ink stock solution, ink composition and method for producing them |
US7556680B2 (en) * | 2004-06-04 | 2009-07-07 | Samsung Electronics Co., Ltd. | Ink composition |
US7503966B2 (en) * | 2004-06-07 | 2009-03-17 | Fujifilm Corporation | Black ink composition and ink jet recording method |
AU2005252551B2 (en) * | 2004-06-07 | 2010-07-01 | Fuji Photo Film Co., Ltd. | Black ink composition and ink jet recording method |
US7520928B2 (en) * | 2004-07-13 | 2009-04-21 | Fujifilm Corporation | Black ink composition, ink set containing the same, and ink jet recording method |
CN101824245B (zh) * | 2004-07-13 | 2012-05-30 | 富士胶片株式会社 | 黑色墨水组合物、含该组合物的墨水组以及喷墨记录方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1544260A1 (en) | 2005-06-22 |
KR100825368B1 (ko) | 2008-04-28 |
US7303272B2 (en) | 2007-12-04 |
US20060044375A1 (en) | 2006-03-02 |
EP1544260A4 (en) | 2006-02-08 |
CN100569873C (zh) | 2009-12-16 |
KR20050074956A (ko) | 2005-07-19 |
CN1685020A (zh) | 2005-10-19 |
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