JPH083883A - Fabric for ink jet printing, ink jet printing method and printed product - Google Patents

Abstract

PURPOSE:To provide the method enabling blur-free, clearly and deeply dyed fabrics to be obtained stably, excellent in ink settability and in-device fabric conveyability, thus enabling high-quality dyed fabrics to be produced efficiently. CONSTITUTION:This printed product is obtained by making an ink jet printing on a fabric comprising modified cross-section polyester fibers each <=0.9 denier in fineness, having a water content of 1-101wt.% and containing 0.01-20wt.%, on a dry fabric basis, of at least one substance selected from water-soluble metal salts, water-soluble polymers, urea, thiourea and surfactants.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink-jet printing cloth, an ink-jet printing method and a printed material, and more particularly to an ink-jet printing cloth mainly composed of polyester fiber, an ink-jet printing method and a printed material.

[0002]

2. Description of the Related Art The mainstream of current printing is screen printing,
Roller printing. All of these methods require printing, and are not suitable for high-mix low-volume production.
Since it is difficult to quickly respond to the fashion, a plateless electronic printing system has recently been demanded. In response to this demand, many printing methods using ink jet recording have been proposed, and expectations from various fields are increasing.

The ink-jet printing cloth used here is (1) capable of coloring the ink to a sufficient density, (2) having a high ink dyeing ratio, and (3) drying the ink on the cloth quickly. That (4) the occurrence of irregular ink bleeding on the fabric is small, and (5) that even if the texture is soft, the transportability in the device is excellent. Performance is required.

In order to satisfy these required performances,
Mainly, a method of pre-treating a cloth is adopted. For example, Japanese Patent Application Laid-Open No. 62-53492 proposes a cloth having an ink receiving layer, and Japanese Patent Application Laid-Open No. 61-231286 discloses a cloth having a specific ink receiving layer and an ink. Has also been proposed to contain a specific substance.

[0005]

However, the inventors of the present invention have made a detailed study and found that the above-mentioned method is satisfactory as a whole although some of the above-mentioned required performances are satisfied. There is a problem that can not be obtained.

[0006] Further, the transportability of the cloth may be deteriorated by the pretreatment. In particular, the influence of the substrate is great in the ink-jet printing cloth mainly composed of polyester fibers.

As described above, in the prior art, even if a means for satisfying each performance to some extent can be found,
At present, there is no known inkjet printing cloth and inkjet printing method capable of simultaneously satisfying all of the above-mentioned required performances and obtaining the finest image that solves the series of problems. is there.

Therefore, the object of the present invention is to solve the problems of the conventional general ink-jet printing cloth as described above at the same time, that is, in terms of dyeing technique, it gives a clear and high-density dyeing product without ink bleeding, Ink-jet cloth having good ink-dyeability in terms of cost, good ink-fixability in terms of operability, and good cloth transportability in an apparatus, ink-jet printing method using the same, and the method The object of the present invention is to provide a printed material obtained by

[0009]

The above object can be achieved by the present invention described below.

That is, according to the present invention, in (A) a fabric for ink-jet printing which is mainly composed of polyester fiber, the water content is 1 to 101%, and the water-soluble metal salt, water-soluble polymer, urea, thiourea and At least one substance selected from the group consisting of surfactants is contained in an amount of 0.01 to 20% by weight based on the dry weight of the fabric, the polyester fiber has a modified cross section, and the average thickness is 0.9d or less. An inkjet printing cloth, characterized in that (B) using the cloth, at least after applying ink to the cloth, a dyeing treatment is carried out, and then a reduction cleaning treatment is carried out, (C) A print obtained by using the method, and (D) a processed product obtained by processing the print.

[0011]

[Invention] Inkjet printing, in which an ink having a much lower viscosity than that of conventional printing paste is used, and only the minimum amount of dye is applied to the cloth to form an image by dot expression, is another method. In comparison, there are many restrictions on the physical conditions of the cloth.

The inventors of the present invention have improved the cloth mainly composed of polyester fibers so as to simultaneously satisfy the various required performances as described above, and as a result, have performed a conventional method of pretreating the cloth. In addition, a polyester fiber having a modified cross section and an average thickness of 0.9d or less is used, and at least 0.01 to 20% by weight of a water-soluble metal salt and a water-soluble metal based on the dry weight of the cloth are used. The above-mentioned object is achieved by using a cloth containing at least one substance selected from the group consisting of a water-soluble polymer, urea, thiourea and a surfactant, and having a moisture content of 1 to 101%. I found out that.

Here, the irregular cross section of a fiber has a triangular cross section, a pentagonal cross section, four convex and concave portions, as described on page 826 of Textile Handbook (editing materials) (edited by The Textile Society of Japan, 1968). , Cross-shaped, V-shaped, and other non-circular cross-sections (ibid, page 779), which is a term commonly used in the art.

The formation of such a modified cross-section yarn can be carried out by various methods. Examples thereof include a method in which the shape of the spinneret of the spinning nozzle is changed to a desired irregular shape, a method in which a composite fiber of polyester and other materials such as nylon is formed, and the polyester portion is divided by swelling with nylon alkali (division method 7 (a) and 7 (b)), a method of forming a composite fiber of polyester and another material such as polystyrene and dissolving and removing polystyrene to leave only the polyester portion (sea-island method, FIG. 7 (c)). See) etc.

The reason why the modified cross section is more advantageous in ink jet printing than the circular cross section as the cross section of the fiber has not been completely clarified, but a yarn composed of an ultrafine fiber having a modified cross section is usually used. It is considered that the yarn has a lot of very fine voids in the inside of the yarn or in a portion close to the surface layer, as compared with the circular cross section. By subjecting the cloth made of such a yarn to the above treatment, the fibers or the spaces between the fibers are appropriately swelled, the affinity of the fibers for the ink is increased, and the ink can be stably retained in the voids near the surface layer of the yarn. Therefore, it is considered that bleeding immediately after printing is suppressed. Furthermore, it is considered that the surface layer of the yarn is deeply dyed by performing fixing treatment such as steaming in such a state, and a high density can be obtained.

Further, by adding the above-mentioned substance to the cloth made of the above fibers, and by adding a specific moisture which cannot be usually reached to the cloth, the swelling state between the fibers or between the fibers is optimized. Thus, it is considered that an inkjet cloth having excellent transportability can be obtained because the cloth has a strong elasticity despite having a soft texture and is well adapted to the mechanism for conveying the cloth.

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

The ink-jet printing cloth of the present invention is an ink-jet printing cloth mainly composed of polyester fibers, wherein the fibers have an irregular cross section and an average thickness of 0.9 d or less, and at least the dry weight of the cloth. 0.01 to 20% by weight of water-soluble metal salt,
It is characterized by containing at least one substance selected from the group of water-soluble polymers, urea, thiourea and surfactants, and having a water content of 1 to 101%.

First of all, the fabric of the present invention is mainly composed of a polyester thread having a modified cross section of 0.9d or less, but the polyester is a synthetic fiber having an ester bond, and the polyester thread has a tensile strength, It has great abrasion resistance and heat resistance, and it is comfortable to wear even when mixed with natural fibers and recycled fibers, and has excellent mixing properties.

The polyester of the present invention is not limited to this, but it is a polycondensation product of ethylene glycol and terephthalic acid, or a polycondensation product of linear diol having 3 to 8 carbon atoms and terephthalic acid. Alternatively, a polycondensation product of ethylene glycol, terephthalic acid and a linear dicarboxylic acid having 3 to 8 carbon atoms is preferable. In particular, like the latter, when the above-mentioned treatment is applied to a fiber in which a linear alkylene group having a carbon number of 3 to 8 is introduced into the polyester main chain, the linear portion appropriately expands by swelling with water, Dyes are easily adsorbed and high color development is obtained. On the other hand, when a straight chain diol having 9 or more carbon atoms is introduced into the main chain, the organicity of the fiber becomes too strong, and it becomes difficult for the dye to adapt to color development by the steaming method, resulting in unevenness. It will be easier.

Further, the above-mentioned polymer is melt-spun, but at that time, a fiber having a modified cross section of 0.9d or less is produced.

The fiber having a modified cross section can be produced by a conventionally known method. For example, a method of using a die that matches the desired shape of the fiber during melt spinning, or squeezing to form a wall of nylon or polystyrene around the polyester of the shape to be finally obtained during spinning, After spinning as a single yarn, nylon or polystyrene is dissolved to obtain a polyester having a desired shape.

When fibers having a circular cross section are used,
The effect of the fabric of the present invention cannot be achieved because there are few voids inside the yarn and in the portion close to the surface layer.

When the fiber thickness is 0.9 d or more, the number and size of the voids are not appropriate, and the effect of the fabric of the present invention cannot be achieved. Furthermore, the thickness of the fiber is
When 0.0001 to 0.85 d, the balance of the number and size of the voids is appropriate and more preferable. Regarding the measurement of the average thickness of the fibers, the fibers cut into uniform lengths are weighed, the number of fibers and the weight are obtained, and the weight per 9000 m is converted to d.
It is expressed in units of (denier).

The above fibers are twisted to form a yarn, and the thickness of the yarn at that time is preferably in the range of 10d to 100d.

Next, in the cloth of the present invention, the water content thereof is in the range of 1.0 to 101.0%, preferably 2 to 91%, and more preferably 3 to 81%. When the water content is less than 1.0%, it is not preferable in terms of color development and bleeding prevention. If the water content exceeds 101.0%, it is not preferable in terms of transportability and bleeding.

The method for measuring the water content in the cloth is based on JIS L 1019. That is,
Accurately weigh 100 g of the sample, put it in a drier at 105 ± 2 ° C. and dry to a constant weight, then wash with water,
It is dried again to a constant weight, only the fiber portion is dried and the weight is measured, and the moisture content in the cloth is determined by the following formula.

[0028]

Moisture content (%) = {(W−W ′) / W ″} × 100 (W: weight before drying, W ′: weight after drying, W ″: weight of fiber portion after washing and drying) The ink-jet printing cloth of the invention comprises 0.01 to 20% by weight of a water-soluble metal salt, based on the dry weight of the cloth.
It contains at least one substance selected from the group consisting of water-soluble polymers, urea, thiourea and surfactants. The combined content of these substances is preferably 0.5 to 18
%, More preferably 1 to 15%. If it is less than 0.01%, there is no effect of adding these substances, and if it is more than 20%, it is not preferable from the viewpoint of the transportability of the cloth.

Examples of the water-soluble polymer include starch substances such as corn and wheat; cellulosic substances such as carboxymethylcellulose, methylcellulose and hydroxyethylcellulose; sodium alginate, arabic gum, locustite bean gum, tragacanth gum, guar gum, tamarind seeds and the like. Polysaccharides; protein substances such as gelatin and casein; tannin-based substances; natural water-soluble polymers such as lignin-based substances. Examples of synthetic polymers include polyvinyl alcohol compounds, polyethylene oxide compounds, acrylic acid water-soluble polymers, maleic anhydride water-soluble polymers, and the like. Among these, polysaccharide polymers and cellulose polymers are preferable.

As the water-soluble metal salts, for example, typical ionic crystals such as halides of alkali metals and alkaline earth metals are prepared.
The compound which is 10 is mentioned. As a typical example of such a compound, for example, in the case of an alkali metal salt, NaC
1, Na ₂ SO ₄ , KCl, CH ₃ COONa and the like, and examples of the alkaline earth metal salt include CaCl ₂ , MgCl _{2 and the} like. 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 alcohol.

The above is a description of the essential components of the ink jet fabric of the present invention.

Next, the printing ink used for the ink-jet printing cloth of the present invention is not particularly limited as long as it can dye polyester fibers, but it is composed of a disperse dye and an aqueous liquid medium. Ink for ink jet textile printing is preferably used.

Examples of the disperse dye include C.I. I. Disperse Yellow 5, 24, 54, 64, 79, 82, 83, 9
3, 99, 100, 119, 122, 124, 126,
160, 184: 1, 186, 198, 199, 20
4, 211, 224 and 237; C.I. I. Disperse Orange 13, 29, 31: 1, 33, 49, 54,
55, 66, 73, 118, 119 and 163; C.I.
I. Disperse Red 54, 72, 73, 86, 8
8, 91, 92, 93, 111, 126, 127, 13
4,135,143,145,152,153,15
4, 159, 164, 167: 1, 177, 181, 2
04, 206, 207, 221, 239, 240, 25
8, 277, 278, 283, 288, 311, 32
3, 343, 348, 356 and 362; I. Disperse Violet 33; C.I. I. Disperse Blue 56, 60, 73, 87, 113, 128, 14
3, 148, 154, 158, 165, 165: 1, 1
65: 2, 176, 183, 185, 197, 198,
201, 214, 224, 225, 257, 266, 2
67, 287, 354, 358, 365 and 368;
C. I. Disperse Green 6: 1 and 9 are preferred.

Further, these disperse dyes can be used alone or in combination of two or more, and the content of these dyes (when two or more kinds are used in combination, the total content) is 0.
It is in the range of 5 to 25% by weight, preferably 1.0 to 20% by weight, more preferably 1.5 to 15% by weight. When the content of the disperse dye is less than 0.5% by weight, the density of color development is insufficient. Further, if the content exceeds 25%, the storage stability of the ink is deteriorated, and thickening or deposition due to ink evaporation near the nozzle tip causes ejection failure.

Further, as the dispersant used in the cloth of the present invention, so-called dispersants, surfactants, resins and the like can be used. As the dispersant or surfactant, either anionic or nonionic can be used. For example, as anionic, fatty acid salt, alkyl sulfate ester salt, alkylbenzene sulfonate, alkylnaphthalene sulfonate, dialkylsulfosuccinate. Acid salts, alkyl phosphate ester salts, naphthalene sulfonic acid formalin condensates, polyoxyethylene alkyl sulfate ester salts, and substituted derivatives thereof. Nonionic compounds include polyoxyethylene alkyl ether and polyoxyethylene alkylphenyl. Ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkylamine, glycerin fatty acid ester, oxyethyleneoxy pro Ren block polymers, and substituted derivatives thereof.

As the resin dispersant, styrene and its derivatives, vinylnaphthalene and its derivatives, α, β-
Acrylic acid and its derivatives, maleic acid and its derivatives, itaconic acid and its derivatives, fumaric acid and its derivatives, vinyl acetate, vinyl alcohol, vinylpyrrolidone, acrylamide and their derivatives, etc. Examples thereof include block copolymers, random copolymers and graft copolymers composed of at least two or more monomers (at least one of which is a hydrophilic monomer), 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.

The effect of the present invention can be made more remarkable by using a water-soluble organic solvent in the ink jet ink used in the method of the present invention. 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; ethylene glycol,
Propylene glycol, trimethylene glycol, butylene glycol, hexylene glycol and other alkylene groups having an alkylene group containing 2 to 6 carbon atoms; triols such as 1,2,6-hexanetriol; thiodiglycol; Glycerin; lower alkyl ethers of polyhydric alcohols such as ethylene glycol monomethyl (or ethyl) ether, diethylene glycol monomethyl (or ethyl) ether, triethylene glycol monomethyl (or ethyl) ether; triethylene glycol dimethyl (or ethyl) ether,
Lower dialkyl ethers of polyhydric alcohols such as tetraethylene glycol dimethyl (or ethyl) ether; sulfolane, N-methyl-2-pyrrolidone, 1,3
-Dimethyl-2-imidazolidinone and the like.

The content of the above 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 mediums are used in combination, they can be used alone or as a mixture, but the most preferable liquid medium composition is one in which the solvent contains at least one monohydric or polyhydric alcohol and its derivative. . Among them, thiodiglycol, diethylene glycol, triethylene glycol, triethylene glycol monomethyl ether, tetraethylene glycol dimethyl ether, and ethanol are particularly good.

The main components of the ink used in the printing method of the present invention are as described above, but other various dispersants, surfactants, viscosity modifiers, surface tension modifiers, optical brighteners, etc. are required. Can be added according to

For example, viscosity adjusting agents such as urea, polyvinyl alcohol, celluloses and water-soluble resins; various cationic or nonionic surfactants; diethanolamine,
A surface tension adjusting agent such as triethanolamine; a pH adjusting agent using a buffer solution, an antifungal agent and the like can be mentioned.

The ink jet printing method of the present invention is a method using the ink of the present invention described above, and the ink jet recording method used may be any conventionally known ink jet recording method. 599
In the method described in Japanese Patent No. 36, the method in which the ink subjected to the action of thermal energy causes a rapid volume change and the action force resulting from this state change causes the ink to be ejected from the nozzle is most effective. The reason is that in the above method, when a recording head having a plurality of nozzles is used, the variation in the ink ejection speed between the nozzles is small, and the ink ejection speed is concentrated within the range of 5 to 20 m / sec. Can be given. 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. When the dyes listed in the ink used in the present invention in such a system are used, stable printing can be performed without depositing foreign matter or disconnection on the heater even when continuously recording for a long time. It will be possible.

Further, the conditions under which a particularly effective printing method can be obtained using the ink of the present invention are:
0 to 200 pl, ink injection amount is 4 to 40 nl / mm
² , drive frequency 1.5KHz or more, and head temperature 3
Conditions of 5 to 60 ° C are preferable.

An example of an apparatus suitable for printing using the ink of the present invention is an apparatus for applying thermal energy corresponding to a recording signal to the ink in the chamber of the recording head and generating droplets by the thermal energy. However, this will be described 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, ceramic 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.

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 heats up to generate bubbles in the ink 21 in contact therewith, and the pressure thereof is generated. At this point, the meniscus 23 is projected, the ink 21 is ejected, becomes a recording droplet 24 from the orifice 22, and is ejected toward the cloth 25 used in the present invention. FIG. 3 shows an external view of a multi-head in which many heads shown in FIG. 1 are arranged. The multi-head is a glass plate 2 having multi-grooves 26.
7 and a heating head 28 similar to that described in FIG. 1 is a cross-sectional view of the head 13 along the ink flow path, and FIG. 2 is a cross section taken along the line AB of FIG.

FIG. 4 shows an example of an ink jet recording apparatus incorporating such a head.

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, it is held in a protruding form in the movement 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, 63 is an absorber provided adjacent to the blade 61, and like the blade 61, it is held in a protruding form in the moving path of the recording head. The blade 61, the cap 62, and the absorber 63 constitute an ejection recovery unit 64, and the blade 61 and the absorber 63 remove water, dust, and the like from the ink ejection port surface.

Reference numeral 65 denotes a recording head having ejection energy generating means for ejecting ink onto a cloth facing the ejection port surface where ejection ports are arranged for recording, and 66 denotes a recording head 65 equipped with the recording head 65. It is a carriage for moving. The carriage 66 slidably engages with the guide shaft 67, and a part of the carriage 66 is connected (not shown) to a belt 69 driven by a motor 68. As a result, the carriage 66 can move along the guide shaft 67, and the recording head 65 can move the recording area and the area adjacent to the recording area.

Reference numeral 51 is a cloth feeding portion for inserting a cloth, and 52 is a cloth feed roller driven by a motor (not shown).
With these configurations, the cloth is supplied to the position facing the ejection opening surface of the recording head, and is discharged to the discharge portion provided with the discharge roller 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 head recovery section 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 in which ink is supplied to the head via an ink supply member, for example, a tube. Here, 40 is an ink containing portion containing the ink for supply, 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. 44
Is an absorber that receives waste ink. It is preferable for the present invention that the ink containing portion 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 separate from each other as described above, and is 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 for 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 is 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 printing ink applied to the ink-jet printing cloth of the present invention by the method of the present invention is:
In this state, since it simply adheres to the cloth, it is preferable to carry out the step of reactively fixing the dye to the fiber and the step of removing the unfixed dye. Such a reaction fixing step and a method for removing unreacted dye may be a conventionally known method, for example, a conventionally known method of washing after treatment by a steaming method, an HT steaming method, a thermofix method or the like. It can be carried out in accordance with. In particular, in the case of a fiber mainly composed of polyester like the cloth of the present invention, it is preferable to carry out reduction cleaning.

The cloth which has been subjected to the above-mentioned treatment is then cut into a desired size, and the cut pieces are subjected to steps such as sewing, bonding and welding for obtaining a final processed product. 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.

[0061]

EXAMPLES Next, the present invention will be specifically described with reference to examples. In addition, "part" and "%" in the text are based on weight unless otherwise specified. Preparation of Disperse Dye Liquids (I to III) β-naphthalenesulfonic acid formaldehyde condensate 20 parts Ion-exchanged water 55 parts Diethylene glycol 10 parts The above components were mixed, and 15 parts of the following disperse dyes were newly added to the solution ( That is, three types of solutions were prepared), premixing was performed for 30 minutes, and then dispersion treatment was performed under the following conditions.

Disperse dye C.I. I. Disperse Yellow 198 C.I. I. Disperse Red 88 C.I. I. Disperse Blue 60 Disperser: Sand grinder (Igarashi Kikai) Grinding media: Zirconium beads 1 mm diameter Grinding media filling rate: 50% (volume basis) Grinding time: 3 hours Further, Fluoropore Filter FP-250 (Sumitomo Electric Industries, Ltd. Filter) to remove coarse particles to disperse dye solution I to
III was obtained. Preparation of Inks (a-c) -Disperse Dye Liquid I, II or III 40 parts-Thiodiglycol 24 parts-Diethylene glycol 11 parts-Sodium metasilicate 0.0005 parts-Iron sulfate 0.001 part-Nickel chloride 0003 parts-Zinc sulfate 0.0003 parts-Calcium chloride 0.002 parts-Ion-exchanged water 25 parts All the above components are mixed, and the mixed solution is mixed with sodium hydroxide.
The mixture was adjusted to H7-9, stirred for 2 hours, filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Co., Ltd.), and ink jet printing inks a, b and c (disperse dye liquids I, II and III) was obtained.

Production of Fibers (1-6) <Production Method of Fiber 1> Polyester chips made of a condensation polymer of ethylene glycol and terephthalic acid as components and 66-nylon chips are melted by heating and squeezed out from the die. A fiber as shown in FIG. 7 (a) (1) was obtained. Then, the nylon was swollen with NaOH and removed to obtain 0.2d polyester fiber having a triangular cross section.

<Production Method of Fiber 2> A polyester chip made of a condensation polymerization product of ethylene glycol and terephthalic acid as a component and a 66-nylon chip are melted by heating and squeezed out from a die. ) Like a fiber. Then, the nylon was swollen with NaOH and removed to obtain 0.8d polyester fiber having a rectangular cross section.

<Production Method of Fiber 3> A polyester chip made of a polycondensation product of ethylene glycol and terephthalic acid as a component and a 66-nylon chip are melted by heating and squeezed out from a die, as shown in FIG. ) Like a fiber. Then, the nylon was swollen with NaOH and removed to obtain 0.5d polyester fiber having a three-month cross section.

<Production Method of Fiber 4> A polyester chip made of a 3: 1: 2 copolymer of ethylene glycol, terephthalic acid and pimelic acid as a component, and a 66-nylon chip are melted by heating, and then they are discharged from the die. It was squeezed out to obtain a fiber as shown in FIG. Then, the nylon was swollen with NaOH and removed to obtain 0.2d polyester fiber having a triangular cross section.

<Production Method of Fiber 5> Polyester chips consisting of a condensation polymer of ethylene glycol and terephthalic acid as components are melted by heating and squeezed out from a general-purpose round die, and a polyester having a circular cross section of 0.5d. Fiber was obtained.

<Production Method of Fiber 6> A polyester chip made of a polycondensation product of ethylene glycol and terephthalic acid as components and a 66-nylon chip were each melted by heating, and 10 of the die used for producing the fiber 1 were produced. It was squeezed out from a die having a double diameter to obtain a fiber as shown in Fig. 7 (c) (1). Then, the nylon was swollen with NaOH and removed to obtain 2d polyester fiber having a triangular cross section.

(Example 1) A woven fabric using the above fiber 1 was dipped in an aqueous solution of urea having a concentration of 19% to obtain a squeezing ratio of 100% and then dried to obtain a fabric having a moisture content of 5%. It was

Next, the ink-jet printing inks (a to c) obtained by the above-mentioned method were mounted on a color bubble jet printer BJC600 (trade name, manufactured by Canon Inc.), and the print density was 100% and 200% on the above cloth. A solid sample of 3 cm × 3 cm of a single color and a mixed color of 2 parts was printed and fixed by steaming at 180 ° C. for 8 minutes. After that, wash this with water and reduction wash,
The sharpness, bleeding property and dyeing property of the dyed product were evaluated. The results are shown in Table 1. Further, the fixing property of the ink was good in the print section, and the transfer surface was also good.

(Example 2) A woven fabric using the fiber 1 was dipped in an aqueous solution of 1% polyvinyl alcohol and 3% calcium chloride to adjust the squeezing ratio to 50%, and then dried to obtain a water content of 1%.
A 1% fabric was obtained.

This cloth was printed in the same manner as in Example 1 and the resulting printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. further,
In the print section, the ink fixability was good, and the transport surface was also good.

(Example 3) A woven fabric using the fiber 1 has a density of 5
% Sodium alginate aqueous solution and squeeze 80%
%, And then dried to obtain a fabric having a moisture content of 30%.

This cloth was printed in the same manner as in Example 1 and the resulting printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. Further, the fixing property of the ink was good in the print section, and the transfer surface was also good.

(Example 4) A woven fabric using the fiber 2 was made to have a density of 5
% Sodium alginate aqueous solution and squeeze 80%
%, And then dried to obtain a fabric having a moisture content of 27%.

This cloth was printed in the same manner as in Example 1 and the resulting printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. Further, in the print section, the ink fixability was good, and the transport surface was also good.

(Example 5) A woven fabric using the fiber 3 was made to have a density of 5
% Sodium alginate aqueous solution and squeeze 80%
%, And then dried to obtain a fabric having a moisture content of 80%.

This cloth was printed in the same manner as in Example 1 and the resulting printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. Further, in the print section, the ink fixability was good, and the transport surface was also good.

(Example 6) A woven fabric using the fiber 4 was made to have a density of 5
% Sodium alginate aqueous solution and squeeze 80%
%, And then dried to obtain a fabric having a moisture content of 40%.

Printing was performed on this cloth in the same manner as in Example 1, and the obtained printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. Further, in the print section, the ink fixability was good, and the transport surface was also good.

(Comparative Example 1) A woven fabric using the fiber 5 has a density of 5
% Sodium alginate aqueous solution and squeeze 80%
%, And then dried to obtain a fabric having a moisture content of 25%.

This cloth was printed in the same manner as in Example 1 and the resulting printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1.

(Comparative Example 2) A woven fabric using the fiber 6 was made to have a density of 5
% Sodium alginate aqueous solution and squeeze 80%
%, And then dried to obtain a fabric having a moisture content of 20%.

Printing was performed on this cloth in the same manner as in Example 1, and the obtained printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. It should be noted that there was a problem with the feeding accuracy on the conveying surface as compared with the third embodiment.

(Comparative Example 3) A woven fabric using the fiber 1 was dipped in an aqueous solution of 4% polyvinyl alcohol and 4% calcium chloride to adjust the squeezing ratio to 120%, and then dried to obtain a fabric having a moisture content of 105%. Obtained.

Printing was performed on this cloth in the same manner as in Example 1, and the resulting printed matter was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. In comparison with the example, in 200% of the printed parts, the ink fixability was poor and a phenomenon of rubbing the face surface of the head was observed.

(Comparative Example 4) A woven fabric using the fiber 1 was washed with water and dried to obtain a fabric having a moisture content of 0.5%.

Printing was performed on this cloth in the same manner as in Example 1, and the obtained printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. In addition, as compared with the examples, there was a problem in feedability in terms of transportability.

(Comparative Example 5) A woven fabric using the fiber 1 is made of urea 1
The cloth was dipped in an aqueous solution of 5%, polyvinyl alcohol 5% and calcium chloride 5% to adjust the squeezing ratio to 100%, and then dried to obtain a cloth having a water content of 33%.

This cloth was printed in the same manner as in Example 1, and the resulting printed material was evaluated for its sharpness, bleeding property and dyeing property. The results are shown in Table 1. It should be noted that, as compared with the examples, the fixing property of the ink was poor in the printing portion, and there was a problem in the conveying surface.

[0091]

[Table 1]

◯: Good Δ: Slightly inferior ×: Inferior ^{* 3} : Irregular disorder of the straight line portion of the edge was visually observed,
It was judged.

◯: No turbulence Δ: Some turbulence ×: Many turbulence ^{* 4} : Dyeing rate = (K / S value of 100% solid area after washing) /
(K / S value of 100% solid part pull before washing)

[0094]

[Number 2] K / S = {(1- r) 2/2} × r (r: reflectance at a maximum absorption wavelength) ○: 0.9 or more △: 0.9~0.7 ×: 0.7 Less than

[0095]

As described above, according to the cloth for ink-jet printing of the present invention, it is possible to stably obtain a dyed product having no bleeding and being clear and having a high concentration.

Further, the ink jet textile printing method of the present invention is excellent in the fixing property of the ink and the transportability of the cloth in the apparatus, and can efficiently provide an excellent dyed product.

[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 an external perspective view of a head in which the head shown in FIG. 1 is multi-headed.

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

FIG. 5 is a vertical sectional view of an ink cartridge.

FIG. 6 is a perspective view of a recording unit.

FIG. 7 is a diagram showing some examples of modified cross-section fibers.

[Explanation of symbols]

 13 Head 14 Ink Groove 15 Heat Generation Head 16 Protective Film 17-1, 17-2 Aluminum Electrode 18 Heat Generation Resistor Layer 19 Heat Storage Layer 20 Substrate 21 Ink 22 Orifice 23 Meniscus 24 Small Drop 25 Cloth 26 Multi-Groove 27 Glass Plate 28 Heat-generating head 40 Ink bag 42 Plug 44 Absorber 45 Ink cartridge 51 Ink supply section 52 Cloth feed roller 53 Discharge roller 61 Wiping member 62 Cap 63 Ink absorber 64 Discharge recovery section 65 Recording head 66 Carriage

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location D03D 15/00 B D06B 11/00 A D06M 13/432 (72) Inventor Mariko Suzuki Ota Ward, Tokyo Shimomaruko 3-30-2 Canon Inc. (72) Inventor Fumi Takade 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Masahiro Haruta 3-Chome Shimomaruko, Ota-ku, Tokyo No. 30-2 Canon Inc.

Claims (9)

[Claims] 1. A fabric for ink-jet printing mainly composed of polyester fibers, having a water content of 1 to 101% and comprising a water-soluble metal salt, a water-soluble polymer, urea, thiourea and a surfactant. At least one substance selected is 0.01 to at least the dry weight of the fabric.
20% by weight of polyester fiber having a modified cross section and an average thickness of 0.9 d or less, an inkjet printing cloth. 2. The cloth for ink-jet printing according to claim 1, wherein the polyester is a polycondensation product of terephthalic acid and ethylene glycol. 3. The cloth for inkjet printing according to claim 1, wherein the polyester has a linear alkylene group having 3 to 8 carbon atoms in the main chain. 4. In an inkjet printing method for applying a printing ink to a cloth, the cloth uses the inkjet printing cloth according to any one of claims 1 to 3,
At least, an ink-jet printing method comprising applying an ink to the cloth, performing a dyeing treatment, and then performing a reduction cleaning treatment. 5. The inkjet printing method according to claim 4, wherein the inkjet recording device is a device that ejects ink by utilizing thermal energy. 6. A printed material printed by the inkjet printing method according to claim 4. 7. A processed product obtained by processing the printed material according to claim 6. 8. A processed product obtained by cutting the printed article according to claim 6 into pieces each having a predetermined size and processing the pieces into one or more pieces. 9. The processed product according to claim 8, wherein the processing is sewing.