JPH08127981A - INKJET PRINTING INK AND INKJET PRINTING METHOD - Google Patents

Abstract

(57) [Abstract] [Purpose] When printing a fabric mainly composed of fibers that can be dyed with a disperse dye by an inkjet method, there are problems in dyeing, ink ejection characteristics, and storage stability. At the same time, a satisfactory ink and printing method are provided. [Structure] The composition of an inkjet printing ink contains at least a disperse dye, a compound that disperses the disperse dye, and an aqueous liquid medium, and the content of the disperse dye is 0.1 to the total weight of the ink. 10% by weight, specific gravity is 1.1 to 1.2, and viscosity at 25 ° C. is 2.5 to 4.9.
The range is cP.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink composition for ink-jet printing, and more particularly to a woven or non-woven fabric composed of fibers dyeable with a disperse dye, or a blend of these fibers and other synthetic fibers and natural fibers. The present invention relates to an inkjet printing ink suitable for a printing method of a woven fabric or a mixed-spun nonwoven fabric, an inkjet printing method using the same, a printed product obtained by the method, a recording unit, an ink cartridge, and a recording apparatus.

[0002]

2. Description of the Related Art At present, the mainstream of printing is screen printing and roller printing. However, these methods are not suitable for high-mix low-volume production, and it is difficult to quickly respond to the fashion. Therefore, recently, establishment of a plateless electronic printing system has been demanded.

In response to this demand, many printing methods using ink jet recording have been proposed, and expectations from various fields are increasing.

As an ink jet printing ink using a disperse dye, (1) good dispersion stability at high temperature and long-term storage, (2) giving sufficient density for color development, (3) nozzle of head Not clog the
(4) No irregular bleeding on the fabric and excellent levelness of dyeing, (5) No change in ejection characteristics even after long-term durability, especially in JP-A-54-59936. In the case of the method of ejecting ink by utilizing the volume change due to the heat energy, there is no deposition of foreign matter on the heater that gives the heat energy, and the stable ejection is achieved without causing the heater to break due to cavitation when defoaming. The required performance is that it is possible, and (6) there is little variation in the ejection speed and twist between nozzles even when a multi-nozzle head is used.

In order to satisfy these required performances, the following measures have hitherto been taken.

First, regarding (1), it is particularly important when a water-insoluble or sparingly water-soluble dye such as a disperse dye is used, and a conventional disperse dye is used in a liquid such as an ink jet ink, which requires low viscosity. The problem that the dispersion stability is lower than that of the liquid product and the dye settles at high temperature or during long-term storage is unavoidable. To solve this problem, JP-A-2-
189373 proposes controlling the particle size of the water-insoluble dye in the ink and adjusting the solution density to 1.01 to 1.3, but the presenting range is extremely wide. Can not be expected to be effective.

Regarding (2), it is a general means to increase the concentration of the dye so as to give a sufficient concentration. In particular, a small droplet of 200 pl or less is used, or a cloth having a strong absorbing power is printed. If you do, it is an essential technology. But,
Such ink causes thickening due to evaporation of the ink from the nozzle tip, and the dye settles to cause the problem (3).

Therefore, for (3), measures such as adding a polyhydric alcohol such as glycerin have been taken.
In the case of using a water-insoluble or poorly water-soluble dye such as a disperse dye, there is no particularly complete solution,
Satisfactory results are not obtained except for a very specific combination of dye and solvent.

With respect to (4), many proposals have already been made. For example, in JP-A-62-283174, addition of a carboxylic acid group-containing polymer to an ink can be mentioned, but in both cases (3) and (5). The problem of is inevitable.

With respect to (5), although it may be due to the structure of the dye contained therein, the influence of dispersion destruction due to the presence of a solvent is also considered, and detailed studies have not been made and a sufficient problem has not been solved.

Regarding (6), a multi-nozzle head,
In particular, this is a problem when the ink undergoes a physical interaction between the adjacent nozzles, but the present situation is that analysis from the ink surface has not progressed. As described above, in the conventional technology, even if a means for individually satisfying each performance can be found, a printing ink and an inkjet printing method which satisfy these performances at the same time and solve the series of problems are known so far. The current situation is not.

[0012]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the problems of the conventional general printing ink and ink jet printing as described above, for the cloth mainly composed of fibers dyeable with a disperse dye. That is, there are problems in dyeing such as obtaining a printed material having high density and clear and excellent in levelness without irregular bleeding on the cloth, and ejection performance, particularly ejection stability in an inkjet method using a multi-nozzle head or a thermal energy method. It is an object of the present invention to provide an ink and a printing method that simultaneously satisfy the problems of ejection characteristics such as good ink quality and the problems of storage stability of obtaining an ink whose dispersion state is stable at high temperature and for a long time. Such an object of the present invention is achieved by the following present invention.

[0013]

Accordingly, the present invention is an ink for ink-jet printing containing a disperse dye, a compound that disperses the disperse dye, and an aqueous liquid medium, wherein the disperse dye is contained in the total weight of the ink. 0.1 to 10% by weight, a specific gravity of 1.1 to 1.2, and a viscosity at 25 ° C. of 2.5 to 4.9 cP. Further, the present invention provides an ink jet printing method in which a textile printing ink is applied to a cloth dyeable with a disperse dye by an ink jet method, and then heat treatment is carried out.
An inkjet printing ink containing a compound that disperses the disperse dye, and an aqueous liquid medium, wherein the disperse dye is contained in an amount of 0.1 to 10% by weight based on the total weight of the ink.
Moreover, the specific gravity is 1.1 to 1.2, and the viscosity at 25 ° C. is 2.
An inkjet printing method is characterized in that an ink in the range of 5 to 4.9 cP is used. Further, the present invention is a printed product produced by the above printing method. The present invention also includes an ink cartridge, a recording unit, and a recording device used in the above printing method.

[0014]

The present inventor has improved the ink in an ink jet printing ink so as to simultaneously satisfy the various required performances as described above, and as a result, contains a disperse dye, a compound that disperses the disperse dye, and an aqueous liquid medium. The inkjet printing ink according to claim 1, which contains the disperse dye in an amount of 0.1 to 10% by weight based on the total weight of the ink, and has a specific gravity of 1.
1-1.2, viscosity at 25 ° C is 2.5-4.9 cP
It was found that the discharge stability, long-term storability, and bleeding property are remarkably improved by controlling in the range of. In addition, when the cloth after printing was observed, no unevenness, distortion, or color misregistration in the mixed color portion was observed, and when the cloth was further colored, a sharp contoured and clear printed material was obtained.

These phenomena are greatly related to the specific gravity and viscosity of the ink used. With regard to sedimentation in storage stability, sedimentation of pigment does not theoretically occur unless there is a difference in specific gravity between the pigment and the liquid medium.
It is often difficult considering the balance with other performance. If a dispersant is added as a solution, the effect of the difference in specific gravity can be alleviated to some extent, but it is not a fundamental solution. However, in this system, the specific gravity of the ink as a whole, the dye concentration,
It has been found that storage stability is markedly improved by controlling to be 1.1% or more, which can be said to be outside the range that is normally used as an inkjet ink of 10% or less. In particular, the effect is great in the ink in the low viscosity (2.5 to 4.9 cP) region.

Next, in terms of ejection performance, when the specific gravity is 1.1 or more, the ejection speed between adjacent nozzles or the ejection speed between adjacent nozzles is especially used when an ink jet system that ejects ink by utilizing heat is used. It has been found that variation in droplet volume can be suppressed. The good effect of the method utilizing heat is considered to be due to the stability of the foam during foaming.

In terms of dyeability, as the specific gravity increases,
The liquid weight increases, and the turbulence at the time of landing due to fiber fluffing is suppressed. Further, it is considered that when the color mixing is performed, the variation of the dye distribution due to the difference in the order of driving is small, and good results can be obtained in terms of dyeing stability and leveling property. Furthermore, when printing is performed by moving the head serially, the influence of air resistance during flight is reduced, so landing accuracy is improved, and uneven printing, misalignment, and color misregistration in the color mixing area can be suppressed. It seems possible.

From the above, various performances are recognized to be improved when the specific gravity is 1.1 or more.
If the specific gravity is too large, the ejection speed and the volume of droplets will be reduced, and the problem that a dark-colored printed material cannot be obtained occurs, so the above setting is necessary. As a result of comprehensive examination, it was found that controlling the viscosity to 2.5 to 4.9 cP and the specific gravity of 1.1 to 1.2 is a condition for obtaining a remarkable effect, and the present invention is completed. It has come.

The present invention will be described in detail below with reference to preferred embodiments.

The ink for ink jet textile printing of the present invention comprises
At least 0.1 to 10% by weight of a disperse dye, a dispersant, and an aqueous liquid medium, and the specific gravity of the ink is 1.1 to
The viscosity at 1.2 and 25 ° C. is in the range of 2.5 to 4.9 cP.

The physical properties of the ink used in the present invention and which mainly characterize the present invention are the specific gravity and the viscosity, and the adjustment of the specific gravity is 1.1 to 1.2, preferably 1.11 to 1.1.
9, more preferably in the range of 1.12 to 1.18. When the specific gravity is less than 1.1, there are large variations in the ejection speed between the nozzles and the appropriate liquid volume, which may cause problems such as the deviation or unevenness of the printed dots on the cloth. Further, the deterioration of storage stability becomes remarkable. If the specific gravity exceeds 1.2, the ejection speed and the ejection capacity will decrease, and the problem that a dark-colored printed material cannot be obtained occurs.

Next, the ink for textile printing used in the present invention is an ink for textile textile printing which comprises a disperse dye, a dispersant and an aqueous liquid medium.

The disperse dye is not limited to the following, but C.I. I. Disperse Yellow-5, 42, 5
4, 64, 79, 82, 83, 93, 99, 100, 1
19, 122, 124, 126, 160, 184: 1,
186, 198, 199, 204, 211, 224 and 237; I. Disperse Orange 13, 29,
31: 1, 33, 49, 54, 55, 66, 73, 11
8, 119 and 163; C.I. I. Disperse Red 54, 72, 73, 86, 88, 91, 92, 93, 1
11, 126, 127, 134, 135, 143, 14
5,152,153,154,159,164,16
7: 1, 177, 179, 181, 204, 206, 2
07, 221, 239, 240, 258, 277, 27
8, 283, 288, 311, 323, 343, 34
8, 356 and 362; C.I. I. Disperse Violet 26, 33, 77; C.I. I. Dispense Bull-
56, 60, 73, 79, 79: 1, 87, 87: 1,
113, 128, 143, 148, 154, 158, 1
65, 165: 1, 165: 2, 176, 183, 18
5, 197, 198, 201, 214, 224, 22
5, 257, 266, 267, 287, 354, 35
8, 365 and 368; C.I. I. Disperse Green 6: 1 and 9 are preferred.

Further, the content of these dyes (total content when two or more kinds are used in combination) is 0.1 to 10% by weight, preferably 0.5 to 9% by weight, and more preferably 1%. ~
It is in the range of 8% by weight. When the content of the disperse dye is less than 0.1% by weight, the density of color development is insufficient. Again 10
When it is contained in an amount of more than wt%, there are restrictions on the physical properties, which causes deterioration of the storage stability of the ink and thickening or precipitation due to evaporation of the ink near the nozzle tip, resulting in ejection failure.

Further, as the compound for dispersing the disperse dye in the aqueous liquid medium of the ink used in the present invention, so-called dispersants, surfactants, resins and the like can be used.
As the dispersant or the surfactant, either anionic or nonionic can be used. For example, as the anionic, fatty acid salt, alkyl sulfate ester salt, alkylbenzene sulfonate, alkylnaphthalene sulfonate, dialkylsulfosuccinate can be used. Acid salts, alkyl phosphoric acid ester salts, naphthalene sulfonic acid formalin condensates, polyoxyethylene alkyl sulfate ester salts, and substituted derivatives thereof, and the like. Nonionic compounds include polyoxyethylene alkyl ether, polyoxyethylene Ethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkylamine, glycerin fatty acid ester, oxyethylene oxyprote Ren Block Polymer -, acetylene glycol or its ethylene oxide adduct, and substituted derivatives thereof. Of these, formalin condensates of naphthalene sulfonic acid and derivatives thereof (especially alkylated products), acetylene glycol or ethylene oxide adducts thereof are particularly preferable.

Examples of resin dispersants include styrene and its derivatives, vinylnaphthalene and its derivatives, aliphatic alcohol esters of α, β-unsaturated carboxylic acids, acrylic acid and its derivatives, maleic acid and its derivatives, itaconic acid and At least two or more monomers selected from derivatives thereof, fumaric acid and derivatives thereof, vinyl acetate, vinyl alcohol, vinylpyrrolidone, acrylamide and derivatives thereof (at least one of which is a hydrophilic monomer). Block copolymers, random copolymers and graft copolymers, and salts thereof. It is preferable that these resins are alkali-soluble resins that are soluble in an aqueous solution in which a base is dissolved. Among them, a water-soluble polymer compound having a carboxyl group and its salt in the side chain is particularly preferable.

The content of the compound that disperses the disperse dye is preferably 0.02 to 30% by weight, more preferably 0.05 to 25% by weight, based on the total weight of the ink.

The aqueous liquid medium containing water as a main component used in the present invention is 10 to 93% by weight, preferably 25 to 87% by weight, more preferably 30% by weight based on the total weight of the ink.
The content is preferably in the range of ~ 82% by weight.

Further, the effect of the present invention can be made more remarkable by using a water-soluble organic solvent. Examples of such a solvent include monohydric alcohols such as methanol, ethanol and isopropyl alcohol, ketones and keto alcohols such as acetone and diacetone alcohol; ethers such as tetrahydrofuran and dioxane; diethylene glycol, triethylene glycol and tetra. Oxyethylene or oxypropylene addition polymers such as ethylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol, polypropylene glycol; alkylene groups such as ethylene glycol, propylene glycol, trimethylene glycol, butylene glycol, hexylene glycol having 2 to 2 Alkylene glycols containing 6 carbon atoms;
Triols such as 1,2,6-hexanetriol; thiodiglycol; bishydroxyethyl sulfone; glycerin; ethylene glycol monomethyl (or ethyl)
Lower alkyl ethers of polyhydric alcohols such as ether, diethylene glycol monomethyl (or ethyl) ether, and triethylene glycol monomethyl (or ethyl) ether; triethylene glycol dimethyl (or ethyl) ether, tetraethylene glycol dimethyl (or ethyl) ether, etc. And lower dialkyl ethers of polyhydric alcohols; sulfolane, N-methyl-2-pyrrolidone, 2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone and the like. The content of the water-soluble organic solvent is generally in the range of 0 to 50% by weight, preferably 2 to 45%, based on the total weight of the ink.

When the above-mentioned media are used in combination, they may be used alone or as a mixture, but preferred water-soluble organic solvents are monohydric alcohols, ketones, bishydroxyethyl sulfone, glycerin, ethylene glycol, diethylene glycol and triethylene. Glycol, tetraethylene glycol, thiodiglycol, propylene glycol, dipropylene glycol, tripropylene glycol and derivatives thereof (among them, alkyl ethers). Among them, bishydroxyethyl sulfone is
It is a particularly preferable compound when adjusting the specific gravity.

The main components of the ink of the present invention are as described above, but various other defoaming agents, viscosity adjusting agents, surface tension adjusting agents, pH adjusting agents and the like can be added if necessary. Among them, urea and its derivatives, carboxylic acids and salts thereof up to trivalent, phosphoric acid and its derivatives have the effect of making the effects of the present invention more remarkable.

The above-mentioned ink of the present invention can be produced by a conventionally known dispersing method, mixing method or the like together with the above disperse dye, the compound for dispersing the disperse dye, the solvent, water and other additives.

The material constituting the cloth used in the present invention contains fibers dyeable with a disperse dye. Among them, those containing polyester, acetate and triacetate are preferable. Among them, those containing polyester are particularly preferable. The fibers can be used in any form such as woven fabric, knitted fabric, and non-woven fabric.

The cloth is a fiber 1 which can be dyed with a disperse dye.
A composition of 00% is preferred, but a blended spinning rate of 30%
Above, preferably 50% or more, a mixed spun woven fabric or a mixed spun non-woven fabric of a fiber dyeable with a disperse dye and another material such as rayon, cotton, polyurethane, acrylic, nylon, wool, silk, etc. is also included in the present invention. Can be used as a textile for textile printing.

The thickness of the thread forming the cloth is preferably in the range of 10d to 100d, and the thickness of the fiber forming the thread is not particularly limited, but 1
When it is d or less, the effect of the present invention is more exerted.

The above-mentioned cloth for ink-jet printing is selected from the group consisting of 0.01 to 20% by weight based on the dry weight of the cloth, a water-soluble metal salt, a water-soluble polymer, urea, thiourea and a surfactant. It is even more preferred to contain at least one substance. The combined content of these substances is preferably 0.5 to 18%, more preferably 1 to 1
5%. If it is 0.01% or less, there is no effect of adding these substances, and if it is 20% or more, it may not be preferable from the viewpoint of transportability and dyeability of the cloth.

Examples of the water-soluble polymer include starch substances such as corn and wheat; cellulosic substances such as carboxymethyl cellulose, methyl cellulose and hydroxyethyl cellulose; sodium alginate, arabic gum, locust bean gum, tragacanth gum, guar gum, tamarind seeds and the like. Examples include polysaccharides; protein substances such as gelatin and casein; tannin-based substances; natural water-soluble polymers such as lignin-based substances. Furthermore, synthetic polymers include, for example, polyvinyl alcohol compounds, polyethylene oxide compounds, acrylic acid water-soluble polymers,
Examples thereof include maleic anhydride-based water-soluble polymers. Among these, polysaccharide polymers and cellulose polymers are preferable.

Examples of the water-soluble metal salts include compounds such as halides of alkali metals and alkaline earth metals, which produce typical ionic crystals and have a pH of 4 to 10. Typical examples of such compounds include, for example, alkali metal salts such as NaCl and Na ₂
SO ₄ , KCl, CH ₃ COONa and the like can be mentioned,
Further, as the alkaline earth metal salt, CaCl ₂ , Mg
Cl _{2 and the} like can be mentioned. Of these, salts of Na, K and Ca are preferable.

As the surfactant, anionic, cationic, amphoteric and nonionic surfactants are used. Typically, the higher alcohol sulfate ester salt, the naphthalene derivative sulfonate, and the cationic surfactant are used as the anionic surfactant. Examples thereof include quaternary ammonium salts, imidazoline derivatives for amphoteric compounds, polyoxyethylene alkyl ethers for nonionic compounds, polyoxyethylene propylene block polymers, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and ethylene oxide adducts of acetylene glycol.

Next, the moisture content of the cloth of the present invention is preferably in the range of 1.0 to 101.0%, more preferably 3.0 to 81.0%. Moisture content is 1.0
If it is less than 0.1%, problems may occur in terms of color developability and bleeding prevention, and if the water content exceeds 101.0%, it may be unpreferable in terms of transportability and bleeding.

The method for measuring the water content in the fabric is as follows:
Reference was made to JIS L 1019. That is, 100 g of sample
Was weighed accurately, put in a dryer at 105 ± 2 ° C., dried to a constant weight, washed with water, dried again to a constant weight, and the weight of the fiber portion was measured. The water content in the fabric is calculated by the formula.

Moisture content (%) = {(W−W ′) / W ″} × 100 (W: weight before drying, W ′: weight after drying, W ″: weight of fiber portion after washing with water) The method of the present invention The ink jet recording method in (1) may be any conventionally known ink jet recording method. For example, in the method described in Japanese Unexamined Patent Publication No. 54-59936, ink subjected to the action of thermal energy causes a rapid volume change. It is most effective for the system in which ink is ejected from the nozzle due to the acting force generated by this state change. The reason is that the above-mentioned method is almost the case of a recording head having multiple nozzles, in which case there is little variation in the ink ejection speed between the nozzles, and the ink ejection speed is in the range of 5 to 20 m / sec. It is summarized that the effects of the ink of the present invention can be exhibited more effectively. When the ink containing the disperse dye impinges on the cloth at this speed, the degree of penetration of the droplet into the fiber at the time of landing is optimum. Further, when the ink used in the present invention is used in such a system, even if recording is continuously performed for a long time, deposition of foreign matter on the heater or disconnection does not occur, and stable printing without clogging is possible. Becomes

Further, as a condition for using the ink of the present invention to obtain a particularly effective printing method, 20 droplets are ejected.
~ 200 pl, the amount of applied ink is 4 to 40 nl / mm ² ,
Driving frequency of 1.5 KHz or more, and head temperature of 35 to 6
The condition of 0 ° C. is preferable.

As an example of a device suitable for printing using the ink of the present invention, a device for applying thermal energy corresponding to a recording signal to the ink in the chamber of the recording head and generating a drop from the thermal energy is used. As mentioned above, this will be explained below.

An example of the head structure, which is the main part of the apparatus, is shown in FIGS. 1, 2 and 3.

The head 13 is a glass, ceramics, or plastic plate having a groove 14 through which ink passes, and a heating head 15 used for heat-sensitive recording (a head is shown in the drawing, but is not limited to this). It is obtained by bonding and. The heating head 15 includes a protective film 16 made of silicon oxide, aluminum electrodes 17-1 and 17-.
2. A heating resistor layer 18 made of nichrome, a heat storage layer 19, and a substrate 20 having a good heat dissipation property such as alumina.

The ink 21 has a discharge orifice (fine hole) 2
2, the meniscus 23 is formed by the pressure P.

Now, when an electric signal is applied to the electrodes 17-1 and 17-2, the area indicated by n of the heating head 15 rapidly generates heat, and bubbles are generated in the ink 21 in contact therewith,
The meniscus 23 is projected by the pressure, the ink 21 is ejected from the orifice 22 to form a recording droplet 24, and the cloth 25
Fly towards. FIG. 3 shows an external view of a multi-head in which many heads shown in FIG. 1 are arranged. The multi-head is manufactured by closely contacting a glass plate 27 having a multi-groove 26 and a heating head 28 similar to that described in FIG. FIG. 1 is a cross-sectional view of the head 13 along the ink flow path, and FIG. 2 is a cross-sectional view taken along line AB in FIG.

An example of an ink jet recording apparatus incorporating the head shown in FIG. 4 is shown.

In FIG. 4, reference numeral 61 denotes a blade as a wiping member, one end of which is held by a blade holding member to become a fixed end, which is in the form of a cantilever. The blade 61 is arranged at a position adjacent to the recording area of the recording head, and in the case of this example, is held in a protruding form in the moving path of the recording head. Reference numeral 62 denotes a cap, which is disposed at a home position adjacent to the blade 61, and has a configuration in which it moves in a direction perpendicular to the moving direction of the recording head and contacts the ejection port surface to perform capping. Further, an absorber 63 is provided adjacent to the blade 61 and, like the blade 61, is held in a form protruding into the movement path of the recording head. The blade 61, the cap 62, and the absorber 63 constitute a discharge recovery section 64,
The blade 61 and the absorber 63 remove water and dust on the surface of the ink ejection port. Reference numeral 65 denotes a recording head having ejection energy generating means, which ejects ink onto a fabric facing the ejection port surface where ejection ports are arranged for recording, and 66 carries the recording head 65 to move the recording head 65. It is a carriage for. The carriage 66 slidably engages with a guide shaft 67, and a part of the carriage 66 is a motor 68.
It is connected to a belt 69 driven by. As a result, the carriage 66 can move along the guide shaft 67, and the recording head 65 can move the recording area and its adjacent area.

Reference numeral 51 is a cloth feeding portion for inserting a cloth, and 52 is a cloth feeding roller driven by a motor (not shown).
With these configurations, the cloth is supplied to the position facing the ejection port surface of the recording head, and is discharged to the discharge section provided with discharge rollers 53 as the recording progresses.

In the above structure, when the recording head 65 returns to the home position after recording is completed, the cap 62 of the ejection recovery unit 64 is retracted from the movement path of the recording head 65, but the blade 61 is projected into the movement path. There is. As a result, the ejection port surface of the recording head 65 is wiped.
When the cap 62 comes into contact with the ejection surface of the recording head 65 to perform capping, the cap 62 moves so as to project into the movement path of the recording head.

When the recording head 65 moves from the home position to the recording start position, the cap 62 and the blade 61 are in the same position as the above-mentioned position during wiping. As a result, the ejection opening surface of the recording head 65 is wiped even during this movement.

The above-mentioned movement of the recording head to the home position is performed not only at the end of recording and at the time of ejection recovery, but also at the home adjacent to the recording area at a predetermined interval while the recording head moves in the recording area for recording. The wiper is moved to the position, and the wiping is performed along with the move.

FIG. 5 is a diagram showing an example of an ink cartridge containing ink. Ink is an ink supply member,
For example, it is supplied to the head via a tube. 4 here
Reference numeral 0 is an ink containing portion containing the supply ink, for example, an ink bag, and a rubber stopper 42 is provided at the tip thereof. By inserting a needle (not shown) into this stopper 42, the ink in the ink bag 40 can be supplied to the head. Reference numeral 44 is an absorber that receives waste ink. It is preferable for the present invention that the ink containing portion 40 has a liquid contact surface with ink formed of polyolefin, particularly polyethylene. The ink jet recording apparatus used in the present invention is not limited to the one in which the head and the ink cartridge are separately provided as described above, but is also preferably used in the one in which they are integrated as shown in FIG.

In FIG. 6, reference numeral 70 denotes a recording unit, in which an ink containing portion containing ink, for example, an ink absorber is contained, and the ink in the ink absorber has a plurality of orifices. Head portion 71
It is configured to be ejected as an ink droplet from. For the present invention, it is preferable to use polyurethane as the material of the ink absorber. Reference numeral 72 denotes an atmosphere communication port for communicating the inside of the recording unit with the atmosphere. The recording unit 70 is used in place of the recording head shown in FIG. 4, and is detachable from the carriage 66.

As described above, the textile printing ink used in the present invention is applied onto the cloth, but in this state it is merely adhered. Therefore, the dye is fixed to the fiber in the reaction fixing step and the undetermined state. It is indispensable to carry out the process of removing the dye on the garment. In the reaction fixing step and the method for removing the unfixed dye, the effect of the present invention is remarkable when the HT steaming method or the thermosol method is used as the fixing method.
Furthermore, in the case of the HT steaming method, 140 ° C to 180 ° C
It is preferable that the treatment condition is 2 minutes to 30 minutes.
It is more preferable that the treatment conditions are 6 to 8 minutes at ℃ to 180 ℃. In the case of the thermosol method, a treatment condition of 160 ° C to 210 ° C for 10 seconds to 5 minutes is preferable, and 180 ° C to
The case of processing conditions of 210 ° C. for 20 seconds to 2 minutes is more preferable. The removing method may be a conventionally known soaping method, but reduction cleaning is particularly preferable.

The cloth subjected to the above-mentioned treatment is then cut into a desired size, and the cut pieces are subjected to a process for obtaining a final processed product such as sewing, bonding and welding. Clothes such as dresses, dresses, ties, swimwear, duvet covers, sofa covers, handkerchiefs, etc.
You can get curtains etc. There are many known books such as "Latest Knit Sewing Manual" (published by Senyi Journal Co., Ltd.) and monthly magazine "Soen" (published by Bunka Shuppan) for processing cloth into garments and other daily necessities. Has been described.

[0059]

EXAMPLES The present invention will be further described with reference to Examples and Comparative Examples.
This will be specifically described. The central part and% are not
Unless otherwise specified, it is based on weight.Fabric (A) creation A woven fabric made of 100% carded polyester fiber
Dip it in an aqueous solution of urea with a concentration of 10% and remove it with a squeezing ratio of 60%.
After water, it was dried to adjust the moisture content of the fabric to 6%. Preparation of disperse dye solution (I-III) Naphthalene sulfonic acid formaldehyde condensate 20 parts Sodium lignin sulfonate 5 parts Ion-exchanged water 55 parts Diethylene glycol 10 parts The above components are mixed, and the following disperse dye 10 is newly added to this solution.
Parts were added and premixed for 30 minutes
After that, dispersion treatment was performed under the following conditions. Disperse dye C.I. I. Disperse Yellow 42 (for I) C.I. I. Disperse Red 92 (for II) C.I. I. Disperse Blue 60 (for III) Disperser Sand grinder (made by Igarashi Machinery) Grinding media Zirconium beads 1 mm diameter Grinding media filling rate 50% (volume) Grinding time 3 hours Furthermore, Fluoropore Filter FP-250 (Sumitomo Electric Works)
Co., Ltd.) to remove coarse particles and disperse dye solution (I-
III) was obtained.

Example 1 Production of ink (a): 40 parts of the above disperse dye liquid (I), 10 parts of thiodiglycol, 15 parts of bishydroxyethyl sulfone, 5 parts of diethylene glycol, 2,4,7,9-tetramethyl. -5-decyne 0.05 part-4,7-diol-urea 2 parts-sodium metasilicate 0.0005 part-iron sulfate 0.001 part-calcium chloride 0.002 part-ion-exchanged water 27.9 parts Mix all components and pour the mixture with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an ink jet printing ink (a). The physical properties of the obtained ink-jet printing ink (a) were measured and the results were as follows.

Specific gravity 1.14 Viscosity (25 ° C.) 3.65 cP Surface tension (25 ° C.) 44.3 dyn / cm The ink jet printing ink (a) thus obtained was used in a color bubble jet printer BJC600.
It was mounted on a product (manufactured by Canon Inc.), and a solid sample of 10 cm × 5 cm having a print density of 100% and a print density of 200% was printed on the woven fabric (A) and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, the bleeding property and the level dyeing property were good, and a dark color was obtained even at a print density of 100%.

Further, solid printing was continuously performed for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the dischargeability was very stable before and after continuous printing. The dispersion of this ink was stable at high temperatures and over a long period of time.

Comparative Example 1 Production of ink (b): 40 parts of the above disperse dye solution (I), 10 parts of thiodiglycol, 40 parts of bishydroxyethyl sulfone, 5 parts of diethylene glycol, 2,4,7,9-tetramethyl. -5-decyne 0.05 part-4,7-diol-urea 2 parts-sodium metasilicate 0.0005 part-iron sulfate 0.001 part-calcium chloride 0.002 part-ion-exchanged water 2.9 parts Mix all components and pour the mixture with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered through Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Co., Ltd.) to obtain an ink jet printing ink (b). The physical properties of the obtained ink-jet printing ink (b) were measured and the results were as follows.

Specific gravity 1.21 Viscosity (25 ° C.) 4.25 cP Surface tension (25 ° C.) 45.5 dyn / cm The ink jet printing ink (b) thus obtained was used in the same manner as in Example 1. The above woven fabric (A) was printed and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, as compared with Example 1, the level dyeing property and the dark colorability were deteriorated.

Further, solid printing was continuously performed for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the ejection stability was worse than that of Example 1. Further, this ink had poorer dispersion stability at high temperature and over a long period of time, as compared with Example 1.

Comparative Example 2 Production of Ink (c) 40 parts of Disperse Dye Liquid (I) 10 parts of thiodiglycol 4 parts of bishydroxyethyl sulfone 5 parts of diethylene glycol 2,4,7,9-tetramethyl -5-decyne 0.05 part-4,7-diol-urea 2 parts-sodium metasilicate 0.0005 part-iron sulfate 0.001 part-calcium chloride 0.002 part-ion exchanged water 38.9 parts Mix all components and pour the mixture with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an ink jet printing ink (c). The physical properties of the obtained ink-jet printing ink (c) were measured and the results were as follows.

Specific gravity 1.09 Viscosity (25 ° C.) 3.11 cP Surface tension (25 ° C.) 44.0 dyn / cm The ink jet printing ink (c) thus obtained was used in the same manner as in Example 1. The above woven fabric (A) was printed and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, the bleeding property was particularly deteriorated as compared with Example 1.

Further, solid printing was continuously carried out for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the ejection stability was worse than that of Example 1. Further, this ink is used in Example 1
The dispersion stability at high temperatures and over a long period of time was worse than that of

Comparative Example 3 Production of ink (d): 40 parts of the above disperse dye solution (I), 10 parts of thiodiglycol, 15 parts of bishydroxyethyl sulfone, 15 parts of tripropylene glycol, 2,4,7,9-. Tetramethyl-5-decyne 0.05 part-4,7-diol-Urea 2 parts-Sodium metasilicate 0.0005 part-Iron sulfate 0.001 part-Calcium chloride 0.002 part-Ion-exchanged water 17.9 parts Mix all the above ingredients and pour the mixture with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an ink-jet printing ink (d). The physical properties of the obtained inkjet printing ink (d) were measured and the results were as follows. Specific gravity 1.15 Viscosity (25 ° C.) 5.01 cP Surface tension (25 ° C.) 46.2 dyn / cm Using the inkjet printing ink (d) thus obtained, the same procedure as in Example 1 was performed. The cloth (A) was printed and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, the bleeding property and the leveling property were worse than in Example 1.

Further, solid printing was continuously carried out for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the ejection stability was worse than that of Example 1. Further, this ink had poorer dispersion stability at high temperature and over a long period of time as compared with Example 1.

Comparative Example 4 Production of ink (e): 40 parts of the above disperse dye solution (I), 5 parts of thiodiglycol, 15 parts of bishydroxyethyl sulfone, 2,4,7,9-tetramethyl-5-decyne. 0.05 parts -4,7-diol-urea 2 parts-sodium metasilicate 0.0005 parts-iron sulfate 0.001 parts-calcium chloride 0.002 parts-ion-exchanged water 37.9 parts Mix all the above components And mix the mixture with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered using Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Co., Ltd.) to obtain an inkjet printing ink (e). The physical properties of the obtained inkjet printing ink (e) were measured and the results were as follows. Specific gravity 1.13 Viscosity (25 ° C.) 2.42 cP Surface tension (25 ° C.) 44.5 dyn / cm Using the inkjet printing ink (e) thus obtained, the same procedure as in Example 1 was performed. The cloth (A) was printed and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, the bleeding property and the leveling property were worse than in Example 1.

Further, solid printing was continuously carried out for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the ejection stability was worse than that of Example 1. Further, this ink is used in Example 1
The dispersion stability at high temperatures and over a long period of time was worse than that of

Example 2 Production of ink (f): 45 parts of the above disperse dye liquid (II), 8 parts of thiodiglycol, 18 parts of bishydroxyethyl sulfone, 7 parts of tripropylene glycol, 2,4,7,9- Tetramethyl-5-decyne 0.05 part-4,7-diol-citric acid 1 part-sodium metasilicate 0.0005 part-iron sulfate 0.001 part-calcium chloride 0.002 part-ion exchanged water 20.9 Part All the above ingredients are mixed and the mixture is hydrated with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Co., Ltd.) to obtain an ink jet printing ink (f). The physical properties of the obtained ink-jet printing ink (f) were measured, and the results were as follows.

Specific gravity 1.16 Viscosity (25 ° C.) 4.50 cP Surface tension (25 ° C.) 41.5 dyn / cm Ink for inkjet printing (f) thus obtained was used in the same manner as in Example 1. The above woven fabric (A) was printed and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, the bleeding property and the level dyeing property were good, and a dark color was obtained even at a print density of 100%.

Further, solid printing was continuously carried out for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the dischargeability was very stable before and after continuous printing. The dispersion of this ink was stable at high temperatures and over a long period of time.

Example 3 Production of ink (g): 35 parts of the above disperse dye solution (III), 5 parts of thiodiglycol, 15 parts of bishydroxyethyl sulfone, 3 parts of ethyl alcohol, 2 parts of urea, and sodium metasilicate. 0005 parts-Iron sulfate 0.001 parts-Calcium chloride 0.002 parts-Ion-exchanged water 40 parts All the above components are mixed, and the mixed solution is mixed with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an ink jet printing ink (g). The physical properties of the obtained inkjet printing ink (g) were measured and the results were as follows.

Specific gravity 1.13 Viscosity (25 ° C.) 2.71 cP Surface tension (25 ° C.) 49.5 dyn / cm Using the inkjet printing ink (g) thus obtained, the same procedure as in Example 1 was performed. The above woven fabric (A) was printed and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, the bleeding property and the level dyeing property were good, and a dark color was obtained even at a print density of 100%.

Further, solid printing was continuously performed for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the dischargeability was very stable before and after continuous printing. The dispersion of this ink was stable at high temperatures and over a long period of time. Fabrication of Fabric (B) A woven fabric composed of a blended yarn of 85% polyester fiber and 15% cotton is immersed in an aqueous solution of sodium alginate having a concentration of 2% in advance, dehydrated at a squeezing ratio of 60%, and then dried to obtain a moisture content of the fabric. Adjusted to 9%. Preparation of Disperse Dye Liquids (IV to VI) Methylnaphthalenesulfonic acid formaldehyde condensate 30 parts Ion-exchanged water 45 parts Diethylene glycol 5 parts The above components were mixed, and the following disperse dye 20 was newly added to this solution.
Then, after mixing for 30 minutes, dispersion treatment was performed under the following conditions. Disperse dye C.I. I. Disperse Yellow 224 (for IV) C.I. I. Disperse Red 152 (for V) C.I. I. Disperse Blue 183 (for VI) Disperser Sand grinder (made by Igarashi Machinery) Grinding media Glass beads 1 mm diameter Filling ratio of grinding media 50% (volume) Grinding time 3 hours Furthermore, Fluoropore Filter FP-250 (Sumitomo Electric Works, Ltd.) ) To remove coarse particles and disperse dye solution (IV
~ VI) was obtained.

Example 4 Production of ink (h): 40 parts of the above disperse dye solution (IV), 8 parts of thiodiglycol, 23 parts of bishydroxyethyl sulfone, 5 parts of dielen glycol, 2,4,7,9- Tetramethyl-5-decyne-4,7 0.1 part-Ethylene oxide adduct of diol (n = 3.5) -Urea 4 parts-Sodium metasilicate 0.0005 part-Iron sulfate 0.001 part-Calcium chloride 0.002 parts-Ion-exchanged water 19.8 parts Mix all the above components and p
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Co., Ltd.) to obtain an inkjet printing ink (h). The physical properties of the obtained inkjet printing ink (h) were measured and the results were as follows.

Specific gravity 1.17 Viscosity (25 ° C.) 4.23 cP Surface tension (25 ° C.) 35.1 dyn / cm Inkjet printing ink (h) thus obtained was used in the same manner as in Example 1. The above woven fabric (B) was printed and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, the bleeding property and the level dyeing property were good, and a dark color was obtained even at a print density of 100%.

Further, solid printing was performed for 10 hours continuously with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the dischargeability was very stable before and after continuous printing. The dispersion of this ink was stable at high temperatures and over a long period of time.

Example 5 Production of ink (i): 5 parts of the above disperse dye solution (V), 10 parts of thiodiglycol, 15 parts of bishydroxyethyl sulfone, 5 parts of tetraethylene glycol, 2,4,7,9-. Tetramethyl-5-decyne-4.7 0.1 part-Ethylene oxide adduct of diol (n = 3.5) -Trisodium citrate 2 parts-Sodium metasilicate 0.0005 part-Iron sulfate 0.001 part・ Calcium chloride 0.002 parts ・ Ion-exchanged water 62.9 parts All the above components are mixed, and the mixed solution is mixed with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Co., Ltd.) to obtain an inkjet printing ink (i). The physical properties of the obtained inkjet printing ink (i) were measured and the results were as follows.

Specific gravity 1.14 Viscosity (25 ° C.) 3.30 cP Surface tension (25 ° C.) 40.6 dyn / cm Using the ink jet printing ink (i) thus obtained, the same as in Example 1 The above woven fabric (B) was printed and fixed by steaming at 180 ° C. for 8 minutes. Then, this was washed with water and reduction-washed, and the dyed product was evaluated for bleeding property, dark color property and level dyeing property. As a result, as shown in Table 1, the bleeding property and the level dyeing property were good, and a dark color was obtained even at a print density of 100%.

Further, solid printing was performed for 10 hours continuously with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the dischargeability was very stable before and after continuous printing. The dispersion of this ink was stable at high temperatures and over a long period of time.

Example 6 Preparation of ink (j): 30 parts of the above disperse dye solution (VI), 5 parts of thiodiglycol, 18 parts of bishydroxyethyl sulfone, 3 parts of ethyl alcohol, 5 parts of urea, sodium metasilicate. 0005 parts-Iron sulfate 0.001 parts-Calcium chloride 0.002 parts-Ion-exchanged water 39 parts All the above components are mixed, and the mixed solution is mixed with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Co., Ltd.) to obtain an inkjet printing ink (j). The physical properties of the obtained inkjet printing ink (j) were measured and the results were as follows.

Specific gravity 1.15 Viscosity (25 ° C.) 3.39 cP Surface tension (25 ° C.) 42.9 dyn / cm Using the ink jet printing ink (j) thus obtained, the same manner as in Example 1 The above woven fabric (B) was printed and fixed by dry heat treatment at 200 ° C. for 30 seconds. After that, wash this with water and reduction washing,
The dyed product was evaluated for bleeding property, dark color property and level dyeing property.
As a result, as shown in Table 1, the bleeding property and the level dyeing property were good, and a dark color was obtained even at a print density of 100%.

Further, solid printing was continuously performed for 10 hours with the above printer, and the ejection stability before and after the continuous printing was evaluated. As a result, as shown in Table 1, the dischargeability was very stable before and after continuous printing. The dispersion of this ink was stable at high temperatures and over a long period of time.

Comparative Example 5 Preparation of Ink (k) 55 parts of Disperse Dye Liquid (VI) 5 parts thiodiglycol 18 parts bishydroxyethyl sulfone 18 parts ethyl alcohol 3 parts urea 5 parts sodium metasilicate 0005 parts-Iron sulfate 0.001 parts-Calcium chloride 0.002 parts-Ion-exchanged water 14 parts Mix all the above components and pour the mixture with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered using Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an ink (k) for inkjet printing. The physical properties of the obtained ink-jet printing ink (k) were measured and the results were as follows.

Specific Gravity 1.17 Viscosity (25 ° C.) 4.39 cP Surface Tension (25 ° C.) 39.4 dyn / cm The ink jet printing ink (k) thus obtained was used in the same manner as in Example 6. The above woven fabric (B) was printed and fixed by dry heat treatment at 200 ° C. for 30 seconds. After that, wash this with water and reduction washing,
The dyed product was evaluated for bleeding property and dark color and level dyeing property. As a result, as shown in Table 1, the level dyeing property was deteriorated as compared with Example 6.

Further, solid printing was carried out continuously for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the ejection stability was worse than that of Example 6. In addition, this ink is used in Example 6
The dispersion stability at high temperatures and over a long period of time was worse than that of

Comparative Example 6 Production of Ink (l) -Disperse Dye Solution (VI) 4 parts-Thiodiglycol 5 parts-Bishydroxyethylsulfone 18 parts-Ethyl alcohol 3 parts-Urea 5 parts-Sodium metasilicate 0. 0005 parts-Iron sulfate 0.001 parts-Calcium chloride 0.002 parts-Ion-exchanged water 14 parts Mix all the above components and pour the mixture with sodium hydroxide.
The mixture was adjusted to H8, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Co., Ltd.) to obtain an inkjet printing ink (1). The physical properties of the obtained inkjet printing ink (l) were measured and the results were as follows.

Specific gravity 1.13 Viscosity (25 ° C.) 2.89 cP Surface tension (25 ° C.) 46.2 dyn / cm Inkjet printing ink (l) thus obtained was used in the same manner as in Example 6. The above woven fabric (B) was printed and fixed by dry heat treatment at 200 ° C. for 30 seconds. After that, wash this with water and reduction washing,
The dyed product was evaluated for bleeding property and dark color and level dyeing property. As a result, as shown in Table 1, as compared with Example 6, the dark color property was particularly deteriorated.

Further, solid printing was continuously performed for 10 hours with the above printer, and the ejection stability before and after continuous printing was evaluated. As a result, as shown in Table 1, the ejection stability was worse than that of Example 6.

[0094]

[Table 1] * 1 Irregular irregularities in the straight line portion of the edge were visually observed and judged.

◯: No turbulence Δ: Slight turbulence X: Many turbulence * 2 K / S values of 100% solid portions were measured at 10 points respectively, and the variation from the average value was observed.

◯: K / S value variation is less than 0.5 at all points.

(Good leveling property) Δ: K / S value variation of 0.5 or more at one place or more.

(Inferior level dyeing property) X: Variation in K / S value is 0.5 or more at all points.

(The level dyeing property is very poor.) K / S = (1-R) ² / 2R R: reflectance at maximum absorption wavelength * 3 K / after printing at 100% print density and 200% copy
The S value was measured, and the relative density of the 100% and 200% parts was used to determine the density of the 100% part.

◯: K / S value of 200% part is 1.5 times or less of 100% part (dark color can be obtained even at 100% part) Δ: K / S value of 200% part is 1 of 100% part .5-1.
8 times (almost no dark color is obtained at 100% part) X: K / S value at 200% part is 1.8 times or more than 100% part (at 100% part no dark color is obtained) * 4 The change between the ejection deviation of the ink after solid printing for 10 consecutive hours and the change before printing with an appropriate amount of ink liquid was measured.

O: Deterioration of ejection deviation and change in appropriate amount of ink liquid are hardly seen.

(Good ejection stability) Δ: There is one of deterioration of ejection deviation and change of appropriate amount of ink liquid.

(Slightly inferior ejection stability) X: Both ejection deviation is deteriorated and an appropriate amount of ink liquid is changed.

(Very inferior ejection stability) Example 7 Inks (a, f, g) were mounted on a color bubble jet printer BJC600 (trade name, manufactured by Canon), and each ink was printed on a woven fabric (A). Density is 50-100% 3
Mixed-color printing with various ejection orders of various inks was performed. Furthermore, steam heat treatment was performed at 180 ° C. for 6 minutes and 8 minutes, and washing with water and reduction washing were performed to evaluate the printed image.

As a result, the hue was stable irrespective of the order of application, no difference in steaming time between 6 minutes and 8 minutes was observed, and the dyeing stability was good.

Comparative Example 7 The same process as in Example 7 was carried out except that c was used in place of the ink a in Example 7, and only the color mixture part related to the c ink was dyed due to the difference in the firing order and the steaming time. Regarding the stability, the results were clearly inferior to those of Example 7.

Example 8 The same evaluation as in Example 7 was carried out except that the ink (h, i, j) was used in place of the ink (a, f, g) in Example 7.

As a result, the hue was stable irrespective of the order of application, no difference in steaming time between 6 minutes and 8 minutes was observed, and the dyeing stability was good.

[0109]

As described above, according to the ink jet ink-jet printing ink of the present invention, there is no irregular bleeding on the fabric and it is not possible to obtain a printed matter having a high density and an excellent levelness. At the same time, it satisfies the problems, ejection performance, in particular the ejection stability is poor in the multi-nozzle head and the ink jet method using the thermal energy method, and the storage stability issue that the ink with stable dispersion cannot be obtained at high temperature and for a long time. It becomes possible to do.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a head portion of an inkjet recording apparatus.

FIG. 2 is a cross-sectional view of a head portion of an inkjet recording device.

FIG. 3 is a partial perspective view of a head in which the head shown in FIG.

FIG. 4 is a perspective view showing an example of an inkjet recording apparatus.

FIG. 5 is a cross-sectional view showing an example of an ink cartridge.

FIG. 6 is a perspective view showing an example of a recording unit.

[Explanation of symbols]

 61 Wiping Member 62 Cap 63 Ink Absorber 64 Ejection Recovery Section 65 Recording Head 66 Carriage

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location C09D 11/00 PSZ (72) Inventor Iro Shirota 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Co., Ltd. (72) Inventor Takade, 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Masahiro Haruta, 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (24)

[Claims] 1. An ink-jet printing ink comprising at least a disperse dye, a compound that disperses the disperse dye, and an aqueous liquid medium, wherein the disperse dye is contained in an amount of 0.1 to 10% by weight based on the total weight of the ink. And has a specific gravity of 1.1
Ink for inkjet printing, wherein the viscosity at 2.5 to 1.25 c is in the range of 2.5 to 4.9 cP. 2. The compound for dispersing the disperse dye is at least one selected from a formalin condensate of naphthalenesulfonic acid and its derivative, and a water-soluble polymer compound having a carboxyl group and a salt thereof in a side chain. The inkjet printing ink according to claim 1. 3. The ink according to claim 1, wherein the aqueous liquid medium contains bishydroxyethyl sulfone and its derivative. 4. The inkjet according to claim 1, wherein the aqueous liquid medium contains at least one selected from urea and its derivatives, carboxylic acids and salts thereof up to trivalent, phosphoric acid and its derivatives. Ink for printing. 5. The ink for ink jet textile printing according to claim 1, wherein the aqueous liquid medium contains at least one selected from monohydric alcohols, ketones, acetylene glycol and ethylene oxide adducts thereof. 6. Glycerin, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, thiodiglycol, propylene glycol, dipropylene glycol in the aqueous liquid medium,
The ink for inkjet printing according to claim 1, containing at least one selected from tripropylene glycol and derivatives thereof. 7. The ink for ink-jet printing according to claim 1, wherein the ink-jet method is a method of ejecting the ink by utilizing thermal energy. 8. The ink for ink jet textile printing according to claim 1, which has a surface tension of 30 to 50 dyn / cm. 9. An inkjet printing method in which an ink is applied onto a cloth by an inkjet method, and then heat treatment is performed, wherein the cloth is a cloth containing fibers dyeable with a disperse dye, and the ink has a total weight of the ink. 0.1 to 10% by weight of a disperse dye, a compound that disperses the disperse dye, and an aqueous liquid medium, and has a specific gravity of 1.
1-1.2, viscosity at 25 ° C is 2.5-4.9 cP
The inkjet printing method is characterized in that 10. An inkjet printing method in which at least two kinds of inks are mixed and applied on a cloth by an inkjet method, and then heat treatment is performed, wherein the cloth contains a fiber dyeable with a disperse dye. The ink contains a disperse dye of 0.1 to 10% by weight based on the total weight of the ink, a compound that disperses the disperse dye, and an aqueous liquid medium, and has a specific gravity of 1.1 to 1.2 at 25 ° C. The inkjet printing method is characterized in that the viscosity in is in the range of 2.5 to 4.9 cP. 11. The inkjet printing method according to claim 9, wherein the cloth contains polyester fibers. 12. The heat treatment is high temperature steaming (HT steam).
Ming) method or thermosol method.
Inkjet printing method according to. 13. The ink-jet printing method according to claim 9, wherein the ink-jet method is an ink-jet method of ejecting ink by utilizing thermal energy. 14. The inkjet printing method according to claim 9, wherein the cloth is subjected to a pretreatment before the ink is applied. 15. A printed material printed by the inkjet printing method according to claim 9. 16. A recording unit comprising an ink containing portion containing ink and a head portion for ejecting the ink as ink droplets, wherein the ink is the ink according to claim 1. unit. 17. The recording unit according to claim 16, wherein the head portion includes a head that applies thermal energy to the ink to eject ink droplets. 18. An ink cartridge having an ink containing portion containing ink, wherein the ink is
An ink cartridge, which is the ink described in 1. 19. An ink jet recording apparatus comprising a recording unit having an ink containing portion containing ink and a head portion for ejecting the ink as ink droplets, wherein the ink is the ink according to claim 1. An ink jet recording apparatus characterized by being present. 20. The ink jet recording apparatus according to claim 19, wherein the head portion includes a head that applies thermal energy to ink to eject ink droplets. 21. A recording head for ejecting ink,
The ink according to claim 1, wherein the ink is an ink cartridge having an ink containing portion containing ink and an ink supply portion for supplying the ink from the ink cartridge to a recording head. Characteristic inkjet recording device. 22. The ink jet recording apparatus according to claim 21, wherein the recording head is a head which applies thermal energy to ink to eject ink droplets. 23. A processed product obtained by further processing the printed material according to claim 15. 24. The processed product is obtained by cutting the printed material into a desired size and subjecting the cut pieces to a step of obtaining a final processed product.
Processed product described in 3.