WO2005056701A1 - 水系インク及びこれを用いたインクカートリッジ、インクジェット記録方法と記録物 - Google Patents
水系インク及びこれを用いたインクカートリッジ、インクジェット記録方法と記録物 Download PDFInfo
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- WO2005056701A1 WO2005056701A1 PCT/JP2004/018867 JP2004018867W WO2005056701A1 WO 2005056701 A1 WO2005056701 A1 WO 2005056701A1 JP 2004018867 W JP2004018867 W JP 2004018867W WO 2005056701 A1 WO2005056701 A1 WO 2005056701A1
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- 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
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
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- 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
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- 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
Definitions
- the present invention relates to a water-based ink (hereinafter also referred to as ink), an ink jet recording method using the same, a recorded matter obtained by the recording method, and devices using the ink. More specifically, is the HLB low (for example, a surfactant that is very poor in solubility in ink and separates and precipitates in the stored state of the contained ink), so that it cannot be used in ink normally?
- the present invention relates to a technique for practically using a surfactant that could be used only in a small amount. Background art
- Japanese Patent Application Laid-Open No. 5-132643 proposes a method for improving the fixing property of a recorded matter by including a water-soluble surfactant in the ink. . These are good directions for safety, but the fixation of recorded materials is important. Increasing the content in the ink to improve it will increase the viscosity of the ink. For example, when used in an ink-jet recording method, the reliability including the ink ejection property is reduced. Also, if a large amount of a surfactant is added to the ink for further improving the fixing property, the ink may spread on the surface of the recording material, thereby deteriorating the image quality of the obtained recorded matter.
- JP-A-6-256696 and JP-A-2003-253599 disclose the use of a hydrophilic surfactant in combination with a strongly hydrophobic surfactant to improve the quality of the recorded matter.
- a hydrophilic surfactant in combination with a strongly hydrophobic surfactant to improve the quality of the recorded matter.
- the amount of such a highly hydrophobic surfactant that can be used in the ink is extremely small. Therefore, compared with the conventional method using a water-soluble surfactant, the fixability has not been significantly improved.
- JP-A-1171543 discloses that water-insoluble substances such as water-insoluble ethylene oxide, propylene oxide oils, water-insoluble alcohols, water-insoluble aldehydes and the like or acids or salts such as benzoic acid and xylene sulfonic acid are used. Proposals have been made to dissolve it using resorcinol or the like and, if necessary, using a cosolvent such as 2_pyrrolidone or glycol ester.
- the water-insoluble substance is an acid or a salt, an ester compound, or a polar compound, it is not very preferable for the safety of the human body, or an internal additive from the member to the ink contact member.
- the use of a surfactant with a strong hydrophobicity causes an unstable temperature environment for the surfactant from a low temperature, causing the separation of the surfactant with a strong hydrophobicity in the ink and the adhesion of the surfactant to members that come into contact with the ink. This is likely to occur and reliability will be degraded.
- An object of the present invention to solve the above-mentioned problems and to stably obtain a recorded matter having better fixability of recorded matter, excellent stability and reliability of ink, and excellent image quality.
- An object of the present invention is to provide an ink that can be used, an inkjet recording method, and a device using such an ink.
- Another object of the present invention is to achieve a low HLB (e.g., It is an object of the present invention to provide a technology that enables a large amount of a surfactant to be used.
- Still another object of the present invention is to improve the ink fixing property to a recording agent, but to dissolve or disperse the ink to ink very poorly. Can be stably dissolved or dispersed in the ink and the content can be increased. As a result, inks and ink-jets which can improve the ink fixability to the recording material and improve the quality of the obtained recorded image It is an object of the present invention to provide a recording method and a device using the ink.
- the present invention provides at least two or more surfactants that form micelles in a cloudy or translucent dispersed state with respect to water when used in combination, and the surfactant has a lower hydrophobicity than the respective surfactants.
- An aqueous ink comprising a compound having a hydrophobic alkyl group and a water-soluble group consisting only of a hydroxyl group, and a micro-mice composed of:
- the surfactant having poor solubility is added to the ink in the form of micro micelles, as if the angle
- the water-based ink containing the micro micelles has remarkably good fixability of the recorded matter, and furthermore has excellent stability and reliability of the ink
- the present invention can provide an ink capable of stably obtaining a recorded matter having excellent image quality, an ink jet recording method, and devices using the ink.
- the two or more kinds of surfactants have the same structure with the unit formed of each hydrophobic group, and the first surfactant has a value of 6 to less than 10 and the second surfactant has a HLB of 10 to 15 and less. It is preferable to include an activator, because the ink can form more transparent micro micelles. These two or more surfactants are more preferred because they are surfactants having ethylene oxide having a hydroxyl group at a terminal as a water-soluble group, so that excellent permeability can be obtained. Of course, this ink contains color materials Thereby, an excellent color material image can be formed.
- the most preferred invention is a first surfactant having at least each unit composed of a hydrophobic group having the same structure, and having an HLB of 6 or more and less than 10; a second surfactant having an HLB of 10 or more and 15 or less; And a compound having a hydrophilic portion composed of only a hydroxyl group and a hydrophobic group lower in hydrophobicity than the unit, unlike the unit composed of a group, and comprising the first and second surfactants and the compound.
- a water-based ink characterized by having micelles.
- the present invention makes it possible to use an insoluble or HLB-small surfactant, which is conventionally difficult to use, by making it into micro micelles, and it can be effectively used for an ink jet ejection method using environmental temperature change or thermal energy.
- the surfactant can also provide advantages such as improved fixability, which can be obtained by imaging or exhibiting a single behavior on paper.
- FIG. 1 is a schematic diagram showing a state in which the surfactant is micellized and is soluble.
- FIG. 2 is a schematic diagram showing a state in which the surfactant is converted into micelles and solubilized.
- Figure 3 is a schematic diagram showing the state in which the surfactant has become micelles and solubilized, the temperature has increased, and the binding between water molecules and micelles has weakened.
- Figure 4 is a schematic diagram showing the state in which the surfactant has become micelles and solubilized, the temperature has risen, and the binding between water molecules and micelles has weakened.
- FIG. 5 is a schematic diagram showing a state in which micelles are enlarged by a surfactant.
- FIG. 6 is a schematic diagram showing a state where micelles are separated by a surfactant.
- FIG. 7 is a schematic diagram illustrating the present invention.
- FIG. 8 is a schematic diagram of a mechanism in which a compound having a high hydrophobicity is preferentially attached to a hydrophobic portion on the surface of a recording material, and the ink penetrating direction is made hydrophilic.
- FIG. 9 is a schematic view of a conventional ink, in which the hydrophobic unit is difficult to form a uniform surface after the ink lands on the recording material, and the ink bleeds irregularly.
- FIG. 10 is a schematic view of the ink according to the present invention, in which the hydrophobic unit forms an even surface after the ink lands on the recording material, so that the ink uniformly spreads.
- the present inventors have developed a variety of mechanisms to improve the fixing property of a recorded matter, and to develop an ink that has good stability and reliability of the ink and can obtain a recorded matter of good quality.
- a hydrophobic component which has never been considered before, is converted into a turbid or translucent dispersion state of water under certain conditions into two or more surfactants.
- the compound By combining a compound having an alkyl group and a water-soluble group consisting of only a hydroxyl group, the compound is dispersed in a transparent single phase as if it is dissolved in water, and dispersibility is further increased by heat. It was found that micro micelles, which are less affected, were formed. Further, when the micro micelles are used in an aqueous ink, a new fact is obtained that the recording quality is good, the ink is stable, and the fixability of the obtained recorded matter is good. This has led to the present invention.
- an aqueous ink containing micro micelles dispersed in water wherein the micro micelles have two or more surfactants that become turbid or translucent in a dispersed state with water, and an alkyl group.
- a water-based ink comprising a compound having only a hydroxyl group and a water-soluble group and a micro-micelle
- the ink when the ink is applied to a recording material, the ink can be fixed and obtained.
- the quality of the recorded matter was good, and the stability and reliability of the ink and the recorded matter were excellent. Further, it was found that such an ink showed particularly good results when used for ink jet recording.
- the ink according to the present invention having the above configuration is particularly suitable for a recorded matter From the viewpoint of improving the fixability of the ink and the reliability of the ink, it was found that the improvement was remarkable as compared with the case where the conventional ink was used.
- micro micelle used in the present invention means that a water-insoluble compound is added to an aqueous phase, floats on a gas-liquid interface, or floats on the bottom by utilizing the characteristic of micelle formation specific to a surfactant. This is a micelle that disperses into transparent micelles as if dissolved in the aqueous phase without being precipitated in the aqueous phase, and hardly causes collapse of micelle formation due to heat. Further, the micro micelle has no reactivity with a coloring material, and substantially exists alone in a liquid medium such as ink.
- This micro micelle is different from a microemulsion in which a water-insoluble compound is transparently dispersed by a general resin component, and a micro-emulsion in which a water-insoluble compound is micelle-dispersed with a surfactant.
- the microemulsion-micelle dispersion disperses a water-insoluble compound as if dissolved in water, but has poor stability due to heat, and is therefore an ink jet recording method in which heat energy is applied to ink to perform recording. Is not preferred.
- the amount of the surfactant for micelle dispersion is proportional to the amount of the water-insoluble compound, when a large amount of the water-insoluble compound is required, the amount of the surfactant increases and the micelle becomes large.
- the viscosity of the ink increases and the surface tension lowers, causing the ink to become cheaper.
- the ink dischargeability often deteriorates.
- the water-based ink of the present invention including micro micelles dispersed in water, wherein the micro micelles become a cloudy or translucent dispersion state in water when used in combination.
- Aqueous ink characterized by being a micro micelle composed of at least one kind of a surfactant and a compound having an alkyl group and having only a hydroxyl group as a water-soluble group, has good fixation and permeability on paper. The heat stability is also good.
- the micelles do not become large and do not form an emulsified state, even if an ink using micro micelles is used for ink jet recording, there is a problem with respect to ejection properties and the like. Not wake up.
- the present invention will be described.
- a surfactant is used as a penetrant for the purpose of improving the fixing property of the recorded matter. Due to the use of the compound, it is not possible to obtain remarkably good fixability.
- a compound having a strong hydrophobicity is used, whereby a much better fixing property can be obtained. Sedimentation and separation may occur, reducing the reliability and stability of the ink.
- the present inventors have reconsidered and performed detailed studies on a recording material and various compounds and inks in the world.
- the surface of plain paper such as copy paper is made water-phobic to improve the image quality of the recorded matter, and when water-soluble ink is used, the permeation of the aqueous solution is controlled.
- the hydrophobic part of the surface of the recording material was made hydrophilic by including a highly hydrophobic compound in the aqueous ink. We have come to the conclusion that we need to.
- the present inventors have proposed a micelle formed by using a compound having a strong hydrophobicity in combination with a compound having a strong hydrophilicity, in terms of the state of the micelle in an aqueous solution and the contribution to dissolution or dispersion in water. As a result of re-examination and consideration of the functional group, the following was found.
- a micelle is a compound in which a plurality of compounds gather from a hydrophobic part as the base, It forms hydrogen bonds with water and is dissolved and dispersed in water.
- Ethylene oxide is usually used as a hydrating group.
- the ink composition of the present invention was reached.
- the water-based ink according to the present invention has good stability and reliability of the water-based ink, and furthermore, good fixability of the obtained recorded matter, by a specific mechanism as described below.
- a method of forming micelles and solubilizing a compound having a strong hydrophobic property by using a compound having a strong hydrophilic property is as shown in FIGS. 1 and 2.
- the bond between the water molecules surrounding the micelles and the micelles weakens, and it becomes difficult to maintain the micelles.
- the size of the mill increases due to the increase in the number of attracting water molecules [see Fig. 6], and stability is maintained by separating strongly hydrophobic compounds [see Fig. 5]. ].
- a low hydrophobic compound having only a hydroxyl group as a hydrophilic group is formed into a ball into a pellet. It is expected that micelles will be obtained, the density of the hydrophilic groups possessed by the micelles will be increased, and micro micelles that are stable and resistant to temperature changes will be formed. Also, for good fixability, as shown in Fig.
- ink for example, if ink is attached to copy paper or the like whose surface is made hydrophobic to improve print quality, it will be more resistant to water.
- the surface active agent combined with two or more types becomes a cloudy or translucent dispersed state by positively adhering to the hydrophobic part of the copy paper, making the ink permeation direction hydrophilic. We anticipate that it will be able to obtain a good fixation.
- Fig. 9 For good recorded image quality, surfactants or combinations of surfactants that are transparently dissolved in water are shown in Fig. 9 due to variations in the adhesion of the surfactant to the hydrophobic part.
- the ink bleeds irregularly on the paper surface, whereas the ink of the present invention is used together with the ink force when applied to the surface of the recording material as shown in FIG.
- a surfactant combined with two or more types that becomes turbid or translucent in a water-dispersed state with water.
- it also promotes penetration into the inside of the recording material with voids, improving ink penetration and improving the recording quality formed on the surface of the recording material. It is thought to be.
- Two or more types of surfactants that are opaque or translucent in water that constitute the ink of the present invention are composed of a water-insoluble first surfactant having a hydrophobic group of the same structure,
- the HLB is a combination of the second surfactant of 10 or more
- the effect of the present invention is favorably exhibited because the ink is hardly affected or hardly affected by other components in the ink.
- other components in the ink may be used. It is more preferable because it is hardly affected or given by
- the ink of the present invention includes a clear-ink state except for the coloring material components.
- the ink preferably does not become cloudy or translucent, but is transparent.
- Such a state is a combination of two or more kinds of surfactants which become turbid or translucent in water and a compound having an alkyl group and having only a hydroxyl group as a water-soluble group. This means that the aggregate formed is in a micromicellar state, and such a state is a very stable and strong micelle state against external factors such as temperature. Means that not only the reliability is improved, but also the various effects described above are well exhibited.
- the mixed aqueous solution adjusted to the content to be used is transparent because separation and precipitation hardly occur in the ink and the stability of the ink is easily obtained.
- a combination of two or more surfactants that become a cloudy or translucent dispersion state with respect to water is formed by a water-insoluble first interface in which the hydrophobic groups have the same structure.
- the combination of the surfactant and the second surfactant having an HLB of 10 or more the combination of the surfactant is used as a boundary condition whether the HLB value is 10 or not. Was found to be better.
- it is particularly effective to combine a compound having an HLB of 10 or more and 13 or less with a compound having an HLB of 6 or more and less than 10.
- the use of a material having an HLB of 10 or more and a cloud point of 50 ° C. or more also improves the effect.
- a combination of a water-insoluble first surfactant having the same structure of a hydrophobic group and a second surfactant having an HLB of 10 or more, wherein the surfactant has an unsaturated group in its structure is easy to favorably form micro micelles, and it is particularly preferable to use a surfactant having an acetylene binding group.
- a surfactant in which the hydrophilic unit of the surfactant to be combined is composed of ring-opened ethylene oxide or a combination of ring-opened ethylene oxide and ring-opened propylene oxide. It is preferable to easily develop the stability of the ink. Particularly, those having ethylene oxide having a hydroxyl group at a terminal as a water-soluble group are preferred. Further, a preferable surfactant is a compound satisfying the following general formula (I).
- a ⁇ Pi B are each independently selected from hydrogen atom, ⁇ Pi following general formula (II A) and (I. I B), X A is, C n H 2n + 1 (n is an integer of 1-10) and, X B is (are m,. 1 to: L integer of 0) C m H 2m + 1 .
- Y a and Y B is preferably a ring-opening Represents an ethylene oxide unit and Z or a ring-opened propylene oxide unit, and a and b are each independently an integer.
- n ′ is an integer of any of 5 to 7.
- R 2 and R 3 each independently represent a hydrogen atom or an alkyl group having 1 to 16 carbon atoms.
- (X), (Y) and (Z) represent Each independently represents ⁇ H or D- ⁇ H, and D represents ring-opened ethylene oxide and / or ring-opened propylene oxide.)
- the compound having the structure represented by the general formula (III) is water-soluble.
- (X), (Y) and (Z) are OH in terms of power reliability.
- R 3 and R 3 are hydrogen atoms in order to form a stable aggregate.
- a water-insoluble first surfactant having the same structure as a hydrophobic group a second surfactant having an HLB of 10 or more, an alkyl group and a water-soluble group having a hydroxyl group
- the effect of the present invention is further improved when the hydrophobic unit of the compound which is only the different is different.
- the stability is improved because these hydrophobic units are different and the hydrophilic part of the compound is only a hydroxyl group. We anticipate that this may be due to the increased hydrophilicity of the aggregate.
- water part of this compound contains only hydroxyl groups is a factor that improves the dispersion stabilization of micromicelles.
- the water-based ink of the present invention further contains a coloring material in a dissolved or dispersed state.
- a coloring material in the dissolved or dispersed state as described above include, for example, a compound—a coloring material that itself dissolves and disperses in water (for example, a dye or a pigment having a hydrophilic group), and a coloring material that includes or contains the coloring material.
- a method of dispersing a coloring material using a resin or the like as a dispersant, such as a pigment dispersion does not apply.
- a dispersed coloring material in which water-soluble groups are bonded by a chemical reaction is preferable from the viewpoint of stability of the ink.
- Those in which water-soluble groups are not bonded by a chemical reaction for example, those in which a polymer dispersant having a water-soluble group is physically adsorbed are likely to be peeled off by the effect of a surfactant. It is.
- the water-based ink water-soluble coloring material of the present invention may be used, but the effect may not be as good as the water-dispersed coloring material depending on the situation.
- a coloring material such as a direct dye
- a coloring material having an azo group in the structure may be used.
- a coloring material having a structure having a carboxyl group or a salt group thereof as a hydrophilic group.
- a coloring material having only a carboxyl group or a salt thereof as a hydrophilic group of the coloring material.
- the carboxyl group has a lower affinity for water than the sulfone group, the effect of the water-based ink of the present invention can be favorably exhibited by using a coloring material having a carboxyl group.
- coloring material examples include, for example, direct black 168, direct plaque 154, and the like, which have a high directivity, such as a di- or trisazo coloring material, a direct yellow 142, a direct yellow 86, a direct yellow Coloring materials having a dimer structure such as Red 227 and Direct Red 80, metal-containing coloring materials such as Direct Blue 199, and the general formula (A)
- Examples of the coloring material represented by (C) include, but are not limited to, the following.
- P c is a metal-containing phthalocyanine nucleus
- I 1 , R 2 and R 3 are each independently H, an alkyl group, a substituted alkyl group, an alkenyl group, a substituted alkenyl group, an aralkyl group or Represents a substituted aralkyl group.
- L represents a divalent organic linking group.
- X Each independently represents a carboxy group or a group represented by the following formulas (2) to (4).
- each of Z in the above formulas (2) to (4) independently represents NR 4 R 5 , SR 6 or OR 6, and Y in the formula (3) represents H, C and Z, SR 7 Or E represents OR 7, and E in the formula (4) represents C 1 or CN
- R 4 , R 5 , R 6 and R 7 each independently represent H, an alkyl group, a substituted alkyl group, an aryl. group, a substituted Ariru group, an Ararukiru group or a substituted Ararukiru group, 1 4 ⁇ Pi 1 5, together with the nitrogen atom to form a 5- or 6-membered ring.
- G is substituted by one or two COSH or COOH
- t + q is 3 or 4.
- Ar1 ⁇ 2 NJX (NR! LNR ⁇ J N-NA r 2
- B General formula (B) [In the above general formula (B), J represents the following formula.
- Ar 1 and Ar 2 are each independently an aryl group or a substituted aryl group, and at least one of Ar 1 and Ar 2 is independently from COOH and CO SH It has one or more selected substituents.
- R 1 and R 2 independently represent H, an alkyl group, a substituted alkyl group, an alkenyl group or a substituted alkenyl group, and L is a divalent organic Represents a linking group, and n represents 0 or 1.
- X each independently represents a carbonyl group or a group represented by the following formula (2), (3) or (4).
- R 3 , R 4 , R 5 and R 6 each independently represent H, an alkyl group, a substituted alkyl group, an alkenyl group, a substituted alkenyl group, an aryl group, a substituted aryl group, an aralkyl group, or a substituted aralkyl group; R 3 or R 4 forms a 5- or 6-membered ring with the nitrogen atom.
- formula (B) has a group selected from at least S0 3 H and the same number of COOH or COSH.
- a r and A r 1 is each independently represents an Ariru group or a substituted ⁇ re Ichiru group, at least one of Ar and Ar 1 is a sulfone group, a carboxyl Moto ⁇ Pi Chio It has a substituent selected from the group consisting of a carboxyl group.
- J and J 1 are each independently represented by the following general formula (2), (3) or (4).
- R 5 is independently hydrogen atom, an alkyl group, a substituted alkyl group, an alkoxy group, a halogen atom, CN, Ru is selected from a ureido group ⁇ Pi NHCOR 6.
- the R 6 is hydrogen Selected from an atom, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, an aralkyl group and a substituted aralkyl group, wherein in the formula (3), T represents an alkyl group, W represents a hydrogen atom, CN, CONR ⁇ R 11 , pyridium group and carboxyl group R 1 D and R 11 are each independently selected from hydrogen atom, alkyl and substituted alkyl group, and m has 2 to carbon atoms
- B is selected from a hydrogen atom, an alkyl group and a carboxyl group.
- RR 2 , R 3 and R 4 are each independently selected from a hydrogen atom, an alkyl and a substituted alkyl group, L is a divalent organic bonding group, and n is , 0 or 1, X is independently a carbonyl group or the following general formula (5), (6) or
- Z is selected from OR 7 , SR 7 and NR 8 R 9 , Y is selected from a hydrogen atom, Cl, CN and Z, and E is C Select from 1 and CN Selected.
- R 7 , R 8 and R 9 each independently represent a hydrogen atom, an alkenyl group, a substituted alkenyl group, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, an aralkyl group or a substituted aralkyl group; , 18 or 19 may form a 5- or 6-membered ring with the nitrogen atom to which they are attached.
- the compound of the general formula (C) has at least two groups selected from a carboxyl group and a thiocarboxyl group. It has the same number of carboxyl and thiocarboxyl groups as sulfone groups.
- the amount of the colorant as described above is not particularly limited, but is generally preferably in the range of 0.1 to 15% by mass relative to the total mass of the ink, more preferably 0.1: ! To 10% by mass.
- the water-based ink of the present invention further contains a monovalent alcohol in the ink.
- Monohydric alcohols have the effect of mixing water and oil, for example, as in gasoline drainage. This indicates that the form in which a monovalent alcohol is used in combination with the ink is preferable from the viewpoint of the stability of the ink when the mechanism described above is developed. Furthermore, monohydric alcohol has a good effect on evaporation and permeation into a recording material when an ink is applied on the recording material, so that the effects of the present invention can be better exhibited.
- the content of the monohydric alcohol in the ink of the present invention is 0.1 to 20% by mass, and preferably 0.5 to 10% by mass, based on the total mass of the ink.
- Specific examples of the monohydric alcohol that can be used as the ink component of the present invention include, for example, ethanol, isopropyl alcohol, and n -butanol.
- the water-based ink of the present invention may contain a water retention agent.
- a water retention agent it is preferable to use a compound selected from urea and a urea derivative. Inclusion of urine and urea derivatives in the ink improves the stability of the ink. Further, a compound selected from urea and a urea derivative also has an effect as a solvent aid, and is therefore preferable for the stability of the ink.
- the recording material is high-quality paper or the like
- the effect of improving the fixing property of the present invention is easily exerted due to the water retention of the high-quality paper.
- the familiarization time at the interface between the ink and the recording material may be shortened to improve the fixability.
- urea derivative a compound that is not a cyclic compound is preferable. It is preferable to appropriately select and use a compound derived from at least two of the above. However, the selection varies depending on the amount and type of each component constituting the ink. Further, it is preferable to use one that is water-soluble.
- the amount used is not particularly limited, but generally, it is preferable to contain the ink in the range of 0.115% by mass relative to the total mass of the ink. It is preferable to contain it in the range.
- the water-based ink of the present invention may further contain a water-soluble organic solvent, a surfactant, an antiseptic, a preservative, a fungicide, an antioxidant, a reduction inhibitor, an evaporation promoter, a chelating agent, if necessary. And various additives such as a water-soluble polymer and a pH adjuster.
- a surfactant such as sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate
- water-soluble organic solvents that can be used in this case include, for example, amides such as dimethylformamide and dimethylacetamide; ketones such as acetone and ethers such as tetrahydrofuran and dioxane.
- Polyalkylene glycols such as polyethylene glycol and polypropylene glycol; and alkylene groups such as ethylene glycol, propylene glycol, butylene glycol, triethylene glycol, 1,2,6 xantriol, thiodiglycol, hexylene glycol, and diethylene glycol.
- polyhydric alcohols such as ethylene darico monomethyl (or ethyl) ether, diethylene glycol monomethyl / methyl (or ethyl) ether, and triethylene glycol monomethyl (or ethyl) ether
- Lower alkyl ethers such as N-methyl-1-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, triethanolamine, snoreholane, dimethylsulfoxide, 2-pyrrolidone, ⁇ -force prolactam, etc.
- Examples include cyclic amide compounds and imid compounds such as succinimide.
- the water-soluble organic solvent to be used it is preferable to use one having a solubility parameter larger than that of an alkyl group-containing water-soluble group having only a hydroxyl group. This is because in this case, the stability including the gas-liquid interface in the ink state is in a preferable direction.
- a daricol compound which is liquid at ordinary temperature among the above.
- the amount of these water-soluble organic solvents to be contained in the ink of the present invention is not particularly limited, but is generally 0.1 to 15 mass with respect to the total mass of the ink. The range of / 0 is suitable, more preferably 0.1 to 10% by mass.
- the content of the water-soluble organic solvent as described above is preferably 1% to 40% by mass, more preferably 3% to 30%, based on the total mass of the ink.
- the content of water in the ink is in the range of 30 to 95% by mass. If the amount is less than 30% by mass, the solubility of the coloring material is deteriorated, and the viscosity of the ink is also increased. On the other hand, if the amount of water is more than 95% by mass, the amount of evaporating components is too large, so that sufficient fixing properties cannot be satisfied.
- the aqueous liquid of the present invention preferably has a surface tension of 40 dyn Zcm (mN / m) or less. This is because, for the purpose of expressing the mechanism described above, for example, a droplet having a spread after recording is preferable as exhibiting the effects of the present invention.
- the pH of the ink of the present invention is preferably 8 or more from the viewpoint of the stability of the ink.
- the water-based ink of the present invention preferably has a plurality of counterion components as counterions of the ionic hydrophilic groups of the coloring materials as listed above.
- alkali metal ions it is preferable to use a plurality of alkali metal ions in combination, or to use an alkali metal ion and an ammonium ion in combination.
- the ink of the present invention when both are used in combination, the stability of the ink and the ejection property of the ink are improved.
- the alkali metal ion include Li +, Na +, and K +.
- the water-based ink of the present invention configured as described above can be used as an ink for ordinary stationery, but is particularly effective when used in ink jet recording.
- ink jet recording unlike recording on a recording material with pen pressure like stationery, ink droplets land on the surface of a recording material such as paper, and recording is performed by penetrating and spreading the ink droplets themselves. This is because the interface state of the ink droplet has a great effect on the recording quality.
- Ink jet recording methods include a recording method in which ink is ejected by applying mechanical energy to ink, and an ink jet recording method in which thermal energy is applied to the ink to eject droplets by bubbling of the ink.
- the ink of the present invention is particularly suitable when applied to an ink jet recording method of a type in which the ink can be ejected by the bubbling phenomenon of the heat energy, the ejection becomes extremely stable, and no satellite dots are generated.
- the thermal properties of the ink eg, specific heat, coefficient of thermal expansion, thermal conductivity, etc.
- the thermal properties of the ink may be adjusted.
- the water-based ink of the present invention has a surface tension of 30 to 40 dyn ⁇ cm (mN / m) and a viscosity of 25 to 40 ° C. as physical properties of the ink itself from the viewpoint of improving the matching with the inkjet head. 15 cP (mPas) or less, preferably lOcP (mPas) or less, more preferably 5 cP (mPas) or less. desirable. Therefore, in order to adjust the ink to the above physical properties and to enable recording on ordinary paper, the water content in the ink of the present invention is required. The amount is preferably from 50% by mass to 98% by mass, and more preferably from 60% by mass to 95% by mass.
- the water-based ink of the present invention is used for an ink-jet ejection type head, and is used as an ink container (recording unit, ink cartridge, etc.) in which the ink is stored, or as a filling ink. It is valid.
- the present invention provides an excellent effect in a recording head and a recording apparatus of a bubble jet (registered trademark) type among the ink jet recording methods.
- the present invention is also effective to the discharge method of the air communication method described in Japanese Patent Application Laid-Open No. 9-49, and further, Japanese Patent Application Laid-Open No. 11-188870.
- Japanese Patent Application Laid-Open No. 9-49 Japanese Patent Application Laid-Open No. 9-49
- Japanese Patent Application Laid-Open No. 11-188870 for a configuration in which a common discharge hole is used as a discharge portion of the electrothermal converter for a plurality of electrothermal converters (Japanese Patent Laid-Open No. 59-123670, etc.)
- the present invention is effective.
- a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording apparatus a combination of a plurality of recording heads as disclosed in the above specification is used.
- Either a configuration that satisfies the length or a configuration as a single recording head that is integrally formed may be used, but the present invention can more effectively exert the above-described effects.
- a replaceable chip-type recording head or recording head that can be electrically connected to the device main body and supplied with ink from the device main body by being attached to the device main body.
- the present invention is also effective when a cartridge type recording head provided integrally with the head itself is used.
- the present invention is preferably provided as a configuration of a recording apparatus to which the present invention is applied, because it is possible to further stabilize the effects of the present invention by adding recovery means for the recording head, preliminary auxiliary means, and the like. It is.
- these may include a recording head, a calibrating means, a taling means, a pressurizing or suction means, an electrothermal converter, a separate heating element, or a backup element using a combination thereof.
- This is a preliminary ejection mode in which heating means and ejection are performed separately from recording.
- the water-based ink of the present invention is an ink-jet recording method in which an ink droplet is ejected from an orifice in accordance with a recording signal to perform recording on a recording material to obtain a recorded matter, wherein the ink is dispersed in water.
- a water-based ink containing micro micelles, wherein the micro micelles are two or more surfactants that become turbid or translucent in a water-dispersed state, and an alkyl group and a water-soluble group are water.
- An aqueous system characterized by being a micromicelle consisting of a compound having only an acid group and a micro-micelle comprising: an ink holding body formed by a compound selected from the group consisting of polyacetate and polyolefin; It is preferable that the inkjet recording method is characterized in that It is particularly preferable that the ink holding member and the ink container are formed of polypropylene.
- the ink jet recording method according to the present invention in which a water-based ink droplet is ejected from an orifice in accordance with a recording signal to perform recording on a neo to be recorded to obtain a recorded material, the ink according to the present invention having the above-described preferred embodiment as an ink Is used.
- the ink jet recording method of the present invention is preferably of the type in which thermal energy is applied to ink to be ejected from an orifice to eject ink droplets.
- the effect of the present invention is further improved when the amount of ink droplets discharged from the orifice is 50 ng or less, preferably 35 ng or less, and more preferably 25 ng or less.
- the material to be recorded, the recording environment, and the like have a large effect, it is necessary to take measures according to the situation. '
- a recording unit including an ink containing section containing ink, and a head section for discharging the ink as ink droplets, wherein the ink is as described above.
- the recording unit according to the present invention is preferably configured such that the head portion has a configuration in which thermal energy is applied to eject ink droplets, and the ink storage portion is formed of a polyolefin.
- the ink container has an ink holder therein, and the ink holder is formed of at least one selected from the group consisting of polyvinyl acetate and polyolefin. One.
- the recording unit according to the present invention is preferably configured such that the ink holder is a porous body, the ink holder has a multilayer structure, A multi-layer structure in which the multi-layer arrangement direction is arranged in the ink discharging direction of the ink accommodating section; an ink holding body in a form of a fiber aggregate; These ink carriers are arranged in the ink discharge direction, and the ink carriers have a contact surface with an ink container.
- an ink cartridge provided with an ink containing section for containing ink, wherein the ink has at least one kind of ink of the present invention having the above preferred form.
- an ink cartridge which is characterized in that there is.
- Preferable examples thereof include those in which the ink storage section is formed of polyolefin, those in which the ink storage section has an ink holder therein, and those in which the ink holder is formed of polybutyl acetate.
- ⁇ ⁇ Made of at least one selected from the group consisting of polyolefins
- the ink carrier is composed of a polymer of an inorganic compound.
- the recording cartridge according to the present invention is preferably configured such that the ink holder is a porous body, the ink holder has a multilayer structure, and the multilayer arrangement direction of the multilayer structure is An arrangement in which the ink holding section is arranged in the direction of ink discharge, an ink holding body in the form of a fiber assembly, and the fiber assembly is arranged in the ink ejection direction of the ink storage section. Further, there is a form in which these ink holding bodies have an ink containing portion and a contact surface.
- an ink jet recording apparatus including an ink containing section containing ink, and a head section for ejecting the ink as ink droplets.
- An ink jet recording apparatus characterized in that the ink of the present invention having the above-mentioned preferred embodiment is at least one kind of ink. Preferable examples thereof include those in which the recording unit is at least one kind of the recording unit of the present invention described above.
- a recording unit for discharging ink droplets an ink cartridge having an ink containing section containing ink, and supply of ink from the ink cartridge to a recording head.
- An ink jet recording apparatus provided with an ink supply unit for performing the above operation, wherein the ink is at least one kind of ink of the present invention having the above-mentioned preferred form.
- Recording devices Preferable examples are those in which the recording unit is at least one type of recording unit of the above-described recording unit of the present invention, and the ink cartridge is at least one of the above-described ink cartridges of the present invention.
- Bk pigment dispersion A was prepared.
- a group represented by the following chemical formula was introduced into the surface of carbon black by the above method.
- ⁇ Preparation of black pigment dispersion B> A solution of 5 g of concentrated hydrochloric acid in 5.3 g of water was added at 5 ° C to 1.58 g of anthranilic acid. To this was added a solution containing 1.78 g of sodium nitrite calorie in 8.7 g of water at 5 ° C while being kept at 10 ° C or less by stirring in an ice bath. After further stirring for 15 minutes, 20 g of carbon black having a surface area of 320 m 2 / g and a DBP oil absorption of 120 ml / 100 g was added in a mixed state, followed by stirring for further 15 minutes. The obtained slurry is filtered through filter paper (trade name; Toyo Roshi Kaisha No.
- the filtered pigment particles are sufficiently washed with water, dried in an oven at 110 ° C., and water is added to the pigment. By adding them, an aqueous pigment solution having a pigment concentration of 10% by mass was prepared.
- the group shown by the following chemical formula was introduced into the surface of carbon black by the above method.
- Example 1 to 7 and Comparative Examples 1 to 8 were prepared with the formulations shown in Table 1 below. At this time, the components shown in Tables 1 and 2 below are mixed and thoroughly stirred to dissolve and / or disperse. Then, a fluoropore filter having a pore size of 0.1 ⁇ (trade name: Sumitomo Electric Industries, Ltd.) ) To obtain respective inks.
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were mounted on an ink jet printer BJF800 (product name: manufactured by Canon Inc.) and the temperature was 25 After printing various patterns on commercially available copy paper in an environment of ° C and a humidity of 55%, the degree of staining of the printed portion when the printed portion was rubbed with a hand was visually observed and evaluated according to the following criteria.
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were mounted on an ink jet printer BJF800 (product name: manufactured by Canon Inc.). After printing various patterns on a commercial copy paper in a high temperature and high humidity environment of 0 ° C and humidity of 80%, the printed area was inspected for stains when the printed area was rubbed by hand, and evaluated according to the following criteria. .
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were transferred to a transparent glass container, left at 5 ° C for one month, and evaluated according to the following criteria. . ⁇ : No change in sediment, suspended matter or color tone was observed.
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were transferred to a clear glass container, left at 60 ° C for 1 month, and evaluated according to the following criteria. . ⁇ : No change in sediment, suspended matter or color tone was observed.
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were mounted on an ink jet printer BJF800 (product name: manufactured by Canon Inc.), and a laboratory was prepared. In the environment, alphanumeric characters were printed continuously until the ink cartridge was exhausted, and evaluated according to the following criteria. ⁇ : The printing was not disturbed and the printing was fine until the end.
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were mounted on an ink jet printer BJF800 (product name: manufactured by Canon Inc.), and the temperature was 30 °. Under C environment, alphanumeric characters were continuously printed until the ink cartridge was used up, and evaluated according to the following criteria.
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were mounted on an ink jet printer BJF800 (product name: manufactured by Canon Inc.). Under a 5 ° C environment, alphanumeric characters were printed continuously and evaluated according to the following criteria.
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were mounted on an ink jet printer BJF800 (product name: manufactured by Canon Inc.) and tested. After leaving for 1 month in the room environment, alphanumeric characters were printed and compared with the print before leaving, and evaluated according to the following criteria.
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were mounted on an ink jet printer BJF600 (product name: manufactured by Canon Inc.) and tested. In a room environment, various patterns were printed and evaluated according to the following criteria.
- Bleeding degree was higher than that of regular ink for ink jet printer BJF800 (product name: manufactured by Canon Inc.).
- Example 1 to 7 and Comparative Examples 1 to 8 having the compositions shown in Tables 1 and 2 were mounted on an ink jet printer BJF600 (product name: manufactured by Canon Inc.) and tested. In a room environment, various patterns were printed, and after being left for 1 hour after printing, tap water was applied to the printing surface, and stain on the printing surface was evaluated according to the following criteria.
- the cloud point in the comparative example is not measured because it is in a clear one ink state and already in a dirty state, so that measurement is unnecessary.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Ink Jet (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP20040807225 EP1696005B1 (en) | 2003-12-11 | 2004-12-10 | Water base ink, and utilizing the same, ink cartridge, method of inkjet recording and recorded matter |
CN200480036759XA CN1890330B (zh) | 2003-12-11 | 2004-12-10 | 水性油墨和使用它的墨盒、喷墨记录方法和记录品 |
JP2005516255A JP4804146B2 (ja) | 2003-12-11 | 2004-12-10 | 水系インク及びこれを用いたインクカートリッジ、インクジェット記録方法と記録物 |
AU2004296361A AU2004296361B2 (en) | 2003-12-11 | 2004-12-10 | Water base ink, and utilizing the same, ink cartridge, method of inkjet recording and recorded matter |
US11/141,239 US7740697B2 (en) | 2003-12-11 | 2005-06-01 | Aqueous ink, ink cartridge using the same, inkjet printing method and recorded matter |
Applications Claiming Priority (2)
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JP2003-412848 | 2003-12-11 | ||
JP2003412848 | 2003-12-11 |
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US11/141,239 Continuation US7740697B2 (en) | 2003-12-11 | 2005-06-01 | Aqueous ink, ink cartridge using the same, inkjet printing method and recorded matter |
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WO2005056701A1 true WO2005056701A1 (ja) | 2005-06-23 |
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EP (1) | EP1696005B1 (ja) |
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CN (1) | CN1890330B (ja) |
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RU (1) | RU2361896C2 (ja) |
WO (1) | WO2005056701A1 (ja) |
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2004
- 2004-12-10 AU AU2004296361A patent/AU2004296361B2/en not_active Ceased
- 2004-12-10 CN CN200480036759XA patent/CN1890330B/zh not_active Expired - Fee Related
- 2004-12-10 JP JP2005516255A patent/JP4804146B2/ja not_active Expired - Fee Related
- 2004-12-10 WO PCT/JP2004/018867 patent/WO2005056701A1/ja active Application Filing
- 2004-12-10 KR KR20067013838A patent/KR100866429B1/ko not_active IP Right Cessation
- 2004-12-10 RU RU2006124739A patent/RU2361896C2/ru not_active IP Right Cessation
- 2004-12-10 EP EP20040807225 patent/EP1696005B1/en not_active Not-in-force
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2005
- 2005-06-01 US US11/141,239 patent/US7740697B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
KR20060097064A (ko) | 2006-09-13 |
RU2006124739A (ru) | 2008-01-20 |
EP1696005A1 (en) | 2006-08-30 |
JP4804146B2 (ja) | 2011-11-02 |
US7740697B2 (en) | 2010-06-22 |
EP1696005B1 (en) | 2014-03-12 |
CN1890330A (zh) | 2007-01-03 |
US20050204955A1 (en) | 2005-09-22 |
AU2004296361A1 (en) | 2005-06-23 |
JPWO2005056701A1 (ja) | 2007-07-05 |
KR100866429B1 (ko) | 2008-10-31 |
RU2361896C2 (ru) | 2009-07-20 |
EP1696005A4 (en) | 2008-07-02 |
CN1890330B (zh) | 2011-01-12 |
AU2004296361B2 (en) | 2008-05-15 |
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