JPH07324285A - Web for ink-jet printing, method of ink-jet printing and printed product - Google Patents

Abstract

PURPOSE:To obtain the web for the printing, capable of stably obtaining a bleeding-free, brilliant and highly deeply dyed product excellent in the ink-fixing property and the web-carrying carrying property in an installation, and enabling to efficiently obtain the excellent dyed product. CONSTITUTION:A web for ink-jet printing is subjected to an ink-jet printing to obtain the printed product. The web consists mainly of regenerated cellulose fibers having an average single fiber thickness of 0.1-3d, containing an alkali substance in an amount of 0.01-5wt.% based on the dried weight of the fibers, containing at least one substance selected from the group consisting of 0.01-20wt.% of a water-soluble metal salt, a water-soluble polymer, urea, thiourea, and a surfactant, and having a water content of 15.5-68.5%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cloth for inkjet printing, an inkjet printing method, and a printed product.

[0002]

2. Description of the Related Art The mainstream of current printing is screen printing,
Roller printing. All of these methods require plates to be produced, are not suitable for high-mix low-volume production, and it is difficult to respond quickly to trends, so there has recently been a demand for plateless electronic printing systems. . 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 developing ink to a sufficient density, (2)
High dyeing rate of ink, (3) Ink dries quickly on cloth, (4) Small occurrence of irregular ink bleeding on cloth, (5) Excellent transportability in the device ing,
(6) Performances such as obtaining stable quality in the dyeing process are required.

Conventionally, in order to satisfy these required performances, a method has been mainly used in which a cloth is pre-treated on the cloth surface in advance.

For example, Japanese Unexamined Patent Publication (Kokai) No. 62-53492 discloses fabrics having an ink receiving layer, and Japanese Patent Publication No. 3-46589 discloses a cellulosic fabric containing a reduction inhibitor and an alkaline substance. Proposals have been made.

[0006] However, although such pretreatment has a considerable effect in part on the above requirements, the superiority and inferiority of the printed image after the final step and the transportability are still dependent on the fabric substrate used. It depends largely on the basic characteristics,
There is a problem that you cannot get a satisfactory product.

As described above, in the prior art, although the individual required performances described above can be satisfied to some extent, all the performances listed above are satisfied at the same time, and the highest quality image that solves the series of problems is solved. There is no known ink jet printing cloth and ink jet printing method capable of obtaining

[0008]

SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide the performance required for the conventional general ink-jet printing cloth as described above, that is, 1) is clear without ink bleeding, and has high density. Demand for dyeing technology to obtain a dyed product stably, 2) Cost requirement for good dyeing ratio of ink, 3) Good ink fixability and operability such as excellent transportability in the device. It is an object of the present invention to provide a fabric for inkjet printing, an inkjet printing method, and a printed material that simultaneously satisfy the requirements in terms of the above.

[0009]

Means for Solving the Problems The present invention provides (A) an ink-jet printing cloth mainly composed of regenerated cellulose fibers, wherein the regenerated cellulose fibers have an average thickness of 0.1 to 3 d and at least with respect to a dry weight. 0.
0.01 to 5% by weight of alkaline substance, 0.01 to 2
Containing 0% by weight of at least one substance selected from the group consisting of water-soluble metal salts, water-soluble polymers, urea, thiourea and surfactants, and having a water content of 15.5 to 68.5.
%, A regenerated cellulose fiber having an average thickness of 0.1 to 3 d in an ink jet printing method in which (B) an ink jet printing apparatus applies a printing ink to the fabric. (A) a step of containing at least 0.01 to 5% by weight of an alkaline substance with respect to a dry weight in a cloth mainly composed of cellulose fibers, (b) a water-soluble metal salt, a water-soluble polymer, urea, thiourea And at least one substance selected from the group consisting of surfactants in an amount of 0.01 to 20% by weight and a water content of 15.5 to 68.5%, and (c) an ink on the cloth. An ink-jet printing method, which comprises a step of performing a dyeing treatment after applying, and then a washing treatment, (C) a printed material obtained by such a method And (D) to provide a processed article obtained by processing the prints.

The d (denier) used as a unit of the fiber thickness in the above is a value converted into the weight per 9000 m.

[0011]

The present inventors have made improvements to the fabric for ink jet printing, which is mainly composed of regenerated cellulose fibers, so as to simultaneously satisfy the various required performances as described above. As a result, the basic properties of the substrate are obtained. By controlling the average thickness of the fiber within a certain range, which is lower than that of conventional regenerated cellulose, and containing a specific substance, and further controlling the moisture content of the fabric within a certain range, color development, dyeability, and fixing sex,
It was found that various characteristics such as bleeding property, stability, fluffing property, and transportability can be significantly improved in a well-balanced manner.

Factors relating to the above characteristics include fiber thickness, degree of polymerization, and a solution that dissolves cellulose during wet spinning. In particular, a solution that dissolves fiber thickness and cellulose during wet spinning. It became clear that the effect of the kind of is large.

From the viewpoint of dyeing rate and bleeding property, it is preferable that the thickness of the fiber is small, but since the surface area is large, the dyeing density does not appear and the color developability deteriorates. Further, since the strength of the fiber is lowered, the transportability is deteriorated.

On the other hand, if the fiber is thick as in the conventional case, the dyeing density is likely to occur, but problems occur in the dyeing rate, the bleeding property, and the fuzzing property.

The inventors of the present invention have found that controlling the thickness of the fibers within a certain range makes it possible to achieve a good balance between the performances and maximize the performance.

The present inventors have also examined the influence of the solution during wet spinning in order to obtain a further effect. As a result, when regenerated cellulose fibers obtained by treating with an aqueous solution containing sodium hydroxide, an aqueous solution containing copper ammonium oxide, and an aqueous solution containing amine oxide, the effect was more strongly exhibited. This is considered to be related to the orientation of the crystal part during spinning.

It was also found that the optimum fiber thickness differs slightly depending on the type of treatment solution.

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

The cloth for ink-jet printing of the present invention is mainly composed of regenerated cellulose fibers, and the average thickness of the regenerated cellulose fibers is 0.1 to 3d, and at least 0.01 to 5% by weight based on the dry weight. Contains alkaline substances,
0.01 to 20% by weight of water-soluble metal salt, water-soluble polymer,
It contains at least one substance selected from the group consisting of urea, thiourea and a surfactant and has a water content of 15.
It is 5 to 68.5%.

The textile for printing refers to woven cloth, non-woven cloth, knitted cloth, napped cloth and the like. Of course, the cloth is preferably 100% regenerated cellulose fiber, but other materials may be mixed-spun to the extent that the above effects are not impaired.

The regenerated cellulose, which is the main component of the cloth of the present invention, means that the cellulose, which is the main component of pulp and linter, is once dissolved by a chemical action to form a highly viscous liquid, which is then spun through pores to obtain the original polymer. It is regenerated as a fiber having the same chemical composition.

At that time, although many proposals have been made for a liquid medium in which cellulose is dissolved, a solution containing sodium hydroxide and an oxidizing agent are particularly preferable for sufficiently exerting the effects of the cloth of the present invention. Examples thereof include a solution containing copper ammonia and a solution containing amine oxide.

The average thickness of the fibers needs to be controlled within the range of 0.1 to 3d. Average fiber thickness is 0.1d
If it is less than the above range, the color developability may be deteriorated and inconvenience may occur in terms of transportability. On the other hand, if the average thickness of the fibers exceeds 3d, it is not preferable in terms of bleeding, resolution and fuzzing. Particularly preferably, when the solution is set for each solution during wet spinning, the solution contains 0.5 to 3 when the solution contains sodium hydroxide.
d, 0.3 to 1. When the solution contains copper oxide ammonia.
2d, 0.1-2 if the solution contains amine oxide
The range is d.

The above fibers are twisted to form a yarn, and the thickness of the yarn at that time is preferably 50 to 500 d,
The range is more preferably 100 to 300 d.

In the cloth of the present invention, the moisture content is 15.
It is necessary to control 5 to 68.5%, preferably 1
The range is 6.0 to 50.0%. By setting the water content within that range, dyeing properties such as level dyeing property are remarkably improved.

The moisture content of the cloth is measured according to JIS L 1
Perform according to 019. That is, 100 g of a sample is accurately weighed, placed 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 only after drying is measured. Measure and obtain by the following formula.

[0027]

Moisture content (%) = {(W−W ′) / W ″} × 100 In the above formula, W is the weight before drying, W ′ is the weight after drying, and W ″ is the weight of the fiber portion after washing with water and drying. Represent.

Next, the material side of the cloth of the present invention will be described.

The fabric of the present invention contains an alkaline substance in an amount of 0.0
Contains 1 to 5% by weight. The alkali treatment can be applied to the cloth before printing or can be applied to the cloth before printing, but from the viewpoint of forming the finest image from very small dots after printing, especially preventing bleeding. From the viewpoint of (1), it is preferable that the cloth is preliminarily treated with an alkali agent, and printing and alkali treatment are carried out in a single step, rather than post-treatment with alkali such as an alkali shock method using sodium silicate. When the amount of the alkali agent is less than 0.01%, the reaction between the dye and the fiber is insufficient, and when it exceeds 5%, the fiber strength is lowered and problems such as coloration stability are caused.

Further, in the cloth of the present invention, 0.01 to 20% by weight, preferably 0.05 to 18% by weight of at least one substance selected from the group of water-soluble polymers, urea and thiourea, and surfactants. %, More preferably 0.
1 to 15% by weight is contained. As described above, the thickness of the fibers forming the cloth and the water content thereof are regulated, and by adding such components, the prevention of bleeding, the transportability, and the prevention of fluffing become good. In inkjet printing, which requires an accurate image, the distance between the head and the cloth needs to be 2 mm or less. However, by including the above material in the cloth, problems such as head rubbing can be improved.

Examples of the alkaline substance in the present invention include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide; amines such as mono-, di- and triethanolamines; sodium carbonate, potassium carbonate and sodium bicarbonate. Examples thereof include alkali metal carbonates or bicarbonates. Further, organic acid metal salts such as calcium acetate and barium acetate, ammonia, ammonia compounds and the like can also be used. Also, sodium trichloroacetate, which becomes an alkaline substance under steaming and dry heat, can be used. Particularly preferred alkaline substances are sodium carbonate and sodium bicarbonate used for dyeing reactive dyes.

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, locustite bean gum, tragacanth gum, guar gum, tamarind seeds and the like. Polysaccharides; protein substances such as gelatin and casein; natural water-soluble polymers such as tannin-based substances and 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 salt, for example, a typical ionic crystal such as a halide of an alkali metal or an alkaline earth metal is 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, higher alcohol sulfate ester salts, naphthalene derivative sulfonates and anionic surfactants are used in the anionic type. 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 the 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 the regenerated cellulose fiber, but it is composed of a reactive dye and an aqueous liquid medium. Ink for ink jet textile printing is preferably used.

Above all, when a reactive dye having a vinyl sulfone group and / or a monochlorotriazine group is used as the dye used in the ink, the effect of the present invention can be more remarkably exhibited. Among these dyes, particularly preferable specific examples include, for example, C.I. I. Reactive Yellow 2, 15, 37, 42, 76, 85, 9
5; C.I. I. Reactive Red 21, 22, 24, 3
1, 33, 45, 111, 112, 114, 180, 2
18, 226; C.I. I. Reactive blue 13, 1
5, 19, 21, 38, 49, 72, 77, 176, 2
03, 220; C.I. I. Reactive orange 5, 1
2, 13, 35; C.I. I. Reactive brown 7, 1
1, 33, 46; C.I. I. Reactive green 8, 1
9; C.I. I. Reactive Violet 2, 6, 22;
C. I. Reactive Black 1, 5, 8, 31, 39
And the like. Further, another preferable dye includes a reactive dye having at least two reactive groups. Specific examples of these dyes include C.I.
I. Reactive Yellow 168, 175; C.I. I. Reactive Red 228, 235; C.I. I. Reactive Blue 230, 235; C.I. I. Reactive Orange 95; C.I. I. A representative one is Reactive Brown 37.

One or more of these dyes are contained in the ink, and it is possible to use them in combination with those having different hues. The amount of the dye used is generally 0. It is in the range of 5 to 30% by weight, preferably 1 to 25% by weight, more preferably 1.5 to 20% by weight.

In the ink used in the printing method of the present invention, chlorine ions and / or sulfate ions are contained in the ink in an amount of 10 to 20,000 pp relative to the reactive dye contained in the ink.
It is also a preferable embodiment to add about m, and to add at least one substance selected from the group consisting of silicon, iron, nickel and zinc to the ink in a total amount of about 0.1 to 30 ppm. When ink jet recording is performed on the ink-jet printing cloth of the present invention using such an ink, the dyeing rate is high, there is no bleeding and it is clear,
In addition, it is possible to obtain a dyed product with a high concentration. Further, by using such an ink, it is possible to perform printing with high ejection performance without causing clogging or the like in the head nozzle for a long period of time.

Further, calcium and / or magnesium in total in the ink in combination with the above metal salt is 0.1 to 30 ppm, preferably 0.2 to 20 pp.
m, more preferably in the range of 0.3 to 10 ppm, and it is possible to further improve the dyeing rate.

Water, which is an essential component of the liquid medium constituting the ink used in the ink jet printing method of the present invention, is 30 to 90% by weight, preferably 40 to 40% by weight based on the total amount of the ink.
90% by weight, more preferably 50 to 85% by weight is used.

Although the above are the essential components of the ink jet printing ink used in the method of the present invention, an organic solvent generally used as a liquid medium of the ink can be used together. For example, ketones or keto alcohols such as acetone and diacetone alcohol; ethers such as tetrahydrofuran and dioxane; oxyethylene such as diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol and polypropylene glycol Or oxypropylene addition polymer; alkylene glycols having an alkylene group of 2 to 6 carbon atoms such as ethylene glycol, propylene glycol, trimethylene glycol, butylene glycol, and hexylene glycol; 1,2,6-hexane Triols such as triol; thiodiglycol; glycerin; ethylene glycol monomethyl (or ethyl) ether, diethylene glycol Lower alkyl ethers of polyhydric alcohols such as methyl (or ethyl) ether and triethylene glycol monomethyl (or ethyl) ether; polyhydric alcohols such as triethylene glycol dimethyl (or ethyl) ether and tetraethylene glycol dimethyl (or ethyl) ether Lower dialkyl ethers of alcohols; sulfolane, N-methyl-2-pyrrolidone,
1,3-dimethyl-2-imidazolidinone and the like can be mentioned.

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 medium is used in combination, it 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 polyhydric alcohol and its derivative. Among them, thiodiglycol, diethylene glycol, triethylene glycol, triethylene glycol monomethyl ether and tetraethylene glycol dimethyl ether 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 polyvinyl alcohol, celluloses and water-soluble resins; various cationic or nonionic surfactants; surface tension adjusting agents such as diethanolamine and triethanolamine; pH by buffer solution.
Examples thereof include regulators and fungicides.

The above ink is used in the recording apparatus described in the one embodiment below, whereby a preferable printed material can be provided.

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 reactive dye collides with the cloth at this speed, the degree of permeation 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, as a condition for using the ink of the present invention to obtain a particularly effective printing method, the number of ejected droplets is 2
0 to 200 pl, ink injection amount is 4 to 40 nl / mm
² , 0.025 to 1 mg / cm ^{2 in} total amount of deposited dye, 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 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 heat generating 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 is 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 generates heat, and bubbles are generated 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, which ejects ink onto a cloth facing the ejection port surface on which ejection ports are arranged for recording, and 66 denotes a recording head 65 on which the recording head 65 is mounted. 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 feeding 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 due to the end of recording or the like, the cap 62 of the head recovery section 64 is retracted from the movement path of the recording head 65, but the blade 61 projects 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 at the same position as the above-described wiping position. 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 a predetermined interval while the recording head moves in the recording area to the home position adjacent to the recording area. However, the wiping is performed along with this movement.

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 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.

The cloth 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 to obtain 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. Have been described.

[0065]

EXAMPLES Next, the present invention will be described more specifically with reference to Examples and Comparative Examples. In addition, unless otherwise specified, "parts in the text" and "%" are based on weight. Manufacture of ink (A) -Reactive dye (CI Reactive Yellow 95) 10 parts-Thiodiglycol 24 parts-Diethylene glycol 11 parts-Potassium chloride 0.004 parts-Sodium sulfate 0.002 parts-Sodium metasilicate 0. 001 parts-Iron chloride 0.0005 parts-Water 55 parts All the above components are mixed, and the mixed solution is mixed with sodium hydroxide.
The mixture was adjusted to H8.4, stirred for 2 hours, and then filtered with a Fluoropore filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an inkjet printing ink (A). Manufacture of ink (B) -Reactive dye (CI Reactive Red 24) 10 parts-Thiodiglycol 15 parts-Diethylene glycol 10 parts-Tetraethylene glycol dimethyl ether 5 parts-Potassium chloride 0.04 parts-Sodium sulfate 0.01 Part-sodium metasilicate 0.001 part-iron chloride 0.0005 part-nickel chloride 0.0002 part-water 60 parts All of the above components were mixed, and the mixed solution was mixed with sodium hydroxide.
The mixture was adjusted to H7.9, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an inkjet printing ink (B). Production of ink (C) -Reactive dye (CI Reactive Blue 72) 13 parts-Thiodiglycol 23 parts-Triethylene glycol monomethyl ether 6 parts-Potassium chloride 0.05 parts-Sodium metasilicate 0.001 parts- Iron chloride 0.0005 parts ・ Zinc chloride 0.0003 parts ・ Water 58 parts Mix all the above components and pour the mixture with sodium hydroxide.
The mixture was adjusted to H8.3, stirred for 2 hours, and then filtered with Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an inkjet printing ink (C). Production of Ink (D) -Reactive Dye (CI Reactive Brown 11) 2 parts-Reactive Dye (CI Reactive Orange 12) 1.5 parts-Reactive Dye (CI Reactive Black 39) 6. 5 parts-thiodiglycol 23 parts-diethylene glycol 5 parts-isopropyl alcohol 3 parts-potassium sulfate 0.01 parts-sodium metasilicate 0.001 parts-iron sulfate 0.0005 parts-nickel sulfate 0.0003 parts-zinc sulfate 0 0.0003 parts Water 59 parts All the above components were mixed, and the mixed solution was mixed with sodium hydroxide.
The mixture was adjusted to H8.2, stirred for 2 hours, and then filtered using Fluoropore Filter FP-100 (trade name, manufactured by Sumitomo Electric Industries, Ltd.) to obtain an inkjet printing ink (D). (Example 1) Cellulose was wet-spun with a solution containing sodium hydroxide, the average fiber diameter was 1.8 d, and the thread thickness was 1
A regenerated cellulose fabric consisting of 77d was dipped in an aqueous solution of sodium hydrogencarbonate 3% and sodium alginate 2%, dehydrated at a squeezing rate of 100%, and dried to adjust the water content to 20%.

The inkjet printing inks (A to D) obtained as described above were mounted on this cloth in a color bubble jet printer BJC600 (trade name, manufactured by Canon Inc.), and the distance between the cloth and the head was 1.5 mm, and the distance between heads was 2 × 10 cm. The solid sample was printed under the condition that the ink injection amount was 16 nl / mm ² and fixed by steaming at 100 ° C. for 8 minutes. Then, this was washed with a neutral detergent to evaluate the vividness, bleeding property and dyeing property of the printed material. The results are shown in Table 1.

Example 2 Cellulose was wet-spun with a solution containing ammoniacal copper oxide, and the average fiber diameter was 0.8.
d, a regenerated cellulose fabric having a thread thickness of 266d,
After immersing in an aqueous solution of 2% sodium carbonate and 3% sodium chloride, it was dehydrated at a squeezing rate of 100% and dried to adjust the water content to 20%.

Using this cloth, printing was carried out 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.

Example 3 Cellulose was wet-spun with a solution containing amine oxide, and the average fiber diameter was 1.1.
d, a regenerated cellulose fabric having a thread thickness of 133d,
After soaking in an aqueous solution of 1% sodium hydroxide and 5% urea, it was dehydrated at a squeezing rate of 100% and dried to obtain a water content of 20%.
Adjusted to be%.

Using this cloth, printing was carried out 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.

Example 4 Cellulose was wet-spun with a solution containing amine oxide, and the average fiber diameter was 0.1.
d, a regenerated cellulose fabric having a thread thickness of 133d,
After soaking in an aqueous solution of 1% sodium hydroxide and 5% urea, it was dehydrated at a squeezing rate of 100% and dried to obtain a water content of 20%.
Adjusted to be%.

Using this cloth, printing was carried out 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.

(Example 5) Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber diameter was 3d.
A regenerated cellulose cloth having a thread thickness of 266d is dipped in an aqueous solution of 3% sodium hydrogen carbonate and 2% sodium alginate, dehydrated at a squeezing rate of 100%, and dried to adjust the moisture content to 20%. did.

Using this cloth, printing was carried out 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.

Example 6 Cellulose was wet-spun with a solution containing ammoniacal copper oxide, and the average fiber diameter was 0.8.
d, a regenerated cellulose fabric having a thread thickness of 266d,
After immersing in an aqueous solution of 0.01% sodium carbonate and 3% sodium chloride, it was dehydrated at a squeezing rate of 100% and dried to adjust the water content to 20%.

Using this cloth, printing was carried out 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.

Example 7 Cellulose was wet-spun with a solution containing ammoniacal copper oxide, and the average fiber diameter was 0.8.
d, a regenerated cellulose fabric having a thread thickness of 266d,
After immersing in an aqueous solution of 5% sodium carbonate and 3% sodium chloride, it was dehydrated at a squeezing rate of 100% and dried to adjust the water content to 20%.

Using this cloth, printing was carried out 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.

Example 8 Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber diameter was 1.8.
d, a regenerated cellulose fabric having a thread thickness of 177d,
After immersing in an aqueous solution of sodium hydrogen carbonate 3% and sodium alginate 0.1%, it was dehydrated at a squeezing rate of 100% and dried to adjust the water content to 20%.

Using this cloth, printing was carried out 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.

Example 9 Cellulose was wet-spun with a solution containing amine oxide, and the average fiber diameter was 1.1.
d, a regenerated cellulose fabric having a thread thickness of 133d,
After immersing in an aqueous solution of 1% sodium hydroxide and 15% urea, it was dehydrated at a squeezing rate of 100% and dried to obtain a water content of 2%.
It was adjusted to be 0%.

Using this cloth, printing was carried out 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.

Example 10 Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber diameter was 1.
A regenerated cellulose cloth having a diameter of 8d and a thread thickness of 177d was dipped in an aqueous solution of 3% sodium hydrogen carbonate and 2% sodium alginate, dehydrated at a squeezing rate of 100%, and dried to a moisture content of 16%. Adjusted to.

Using this cloth, printing was carried out 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.

Example 11 Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber thickness was 1.
A regenerated cellulose cloth consisting of 8d and a thread thickness of 177d was dipped in an aqueous solution of 3% sodium hydrogen carbonate and 2% sodium alginate, dehydrated at a squeezing rate of 100%, and dried to a moisture content of 50%. Adjusted to.

Using this cloth, printing was carried out 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.

Comparative Example 1 Cellulose was wet-spun with a solution containing amine oxide, and the average fiber thickness was 0.0.
A regenerated cellulose cloth having a thickness of 5d and a thread thickness of 133d is dipped in an aqueous solution of 1% sodium hydroxide and 5% urea, dehydrated at a squeezing rate of 100%, and dried so that the moisture content becomes 20%. It was adjusted.

The same ink-jet printing inks (A to D) as those used in the above-mentioned examples were used for printing on this cloth by the same method, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. The results are shown in Table 1.

In this case, as compared with Examples 3 and 4, there was a problem in terms of feeding accuracy in terms of transportability.

Comparative Example 2 Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber diameter was 3.5.
d, a regenerated cellulose fabric having a thread thickness of 177d,
Sodium bicarbonate 3% and sodium alginate 2
% Aqueous solution, dehydrated at a squeezing rate of 100%, and dried to adjust the water content to 20%.

The same ink-jet printing inks (A to D) as those used in the above-mentioned Examples were used for printing on this woven fabric by the same method, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. . The results are shown in Table 1.

In this case, fluffing was larger than in Examples 1 and 5.

Comparative Example 3 Cellulose was wet-spun with a solution containing ammoniacal copper oxide, and the average fiber diameter was 0.8.
d, a regenerated cellulose fabric having a thread thickness of 266d,
After soaking in a 3% aqueous solution of sodium chloride, the squeezing rate is 10
It was dehydrated at 0% and dried to adjust the water content to 20%.

The same ink-jet printing inks (A to D) as those used in the above-mentioned examples were used for printing on this woven fabric by the same method to obtain a printed material. However, the dyeability is extremely poor,
The sharpness and bleeding property could not be evaluated.

(Comparative Example 4) Cellulose was wet-spun with a solution containing ammoniacal copper oxide, and the average fiber diameter was 0.8.
d, a regenerated cellulose fabric having a thread thickness of 266d,
After immersing in an aqueous solution of 6% sodium carbonate and 3% sodium chloride, it was dehydrated at a squeezing rate of 100% and dried to adjust the water content to 20%.

The same ink-jet printing inks (A to D) as those used in the above-mentioned examples were used for printing on this woven fabric by the same method, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. . The results are shown in Table 1.

(Comparative Example 5) Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber diameter was 1.8.
d, a regenerated cellulose fabric having a thread thickness of 177d,
It was soaked in an aqueous solution of 3% sodium hydrogen carbonate, dehydrated at a squeezing rate of 100%, and dried to adjust the water content to 20%.

The same ink-jet printing inks (A to D) as those used in the above-mentioned examples were used for printing on this woven fabric by the same method, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. . The results are shown in Table 1.

(Comparative Example 6) Cellulose was wet-spun with a solution containing amine oxide, and the average fiber diameter was 1.1.
d, a regenerated cellulose fabric having a thread thickness of 133d,
After soaking in an aqueous solution of 1% sodium hydroxide and 21% urea, it was dehydrated at a squeezing rate of 100% and dried to obtain a water content of 2%.
It was adjusted to be 0%.

The same ink-jet printing inks (A to D) as those used in the above-mentioned examples were used for printing on this cloth by the same method, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. The results are shown in Table 1.

(Comparative Example 7) Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber diameter was 1.8.
d, a regenerated cellulose fabric having a thread thickness of 177d,
Sodium bicarbonate 3% and sodium alginate 2
% Aqueous solution, dehydrated at a squeezing rate of 100%, and dried to adjust the water content to 15%.

The same ink-jet printing inks (A to D) as those used in the above examples were used for printing on this woven fabric in the same manner, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. . The results are shown in Table 1.

Comparative Example 8 Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber diameter was 1.8.
d, a regenerated cellulose fabric having a thread thickness of 177d,
Sodium bicarbonate 3% and sodium alginate 2
% Aqueous solution, dehydrated at a squeezing rate of 100%, and dried to adjust the water content to 69%.

The same ink-jet printing inks (A to D) as those used in the above examples were used for printing on this woven fabric in the same manner, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. . The results are shown in Table 1.

(Comparative Example 9) Cellulose was wet-spun with a solution containing sodium hydroxide and had an average fiber diameter of 4d.
A regenerated cellulose cloth having a thread thickness of 177d was dipped in an aqueous solution of 2% sodium alginate, and then the squeezing ratio was 1
It was dehydrated at 00% and dried to adjust the water content to 20%.

The same ink-jet printing inks (A to D) as those used in the above-mentioned examples were used for printing on this woven fabric by the same method to obtain a printed material. However, the dyeability is extremely poor,
The sharpness and bleeding property could not be evaluated.

In this case, the fluffing property was larger than that in Example 1.

(Comparative Example 10) Cellulose was wet-spun with a solution containing sodium hydroxide, and the average fiber diameter was 1.
A regenerated cellulose fabric having a diameter of 8d and a thread thickness of 177d was dipped in an aqueous solution of 3% sodium hydrogen carbonate, dehydrated at a squeezing rate of 100%, and dried to adjust the water content to 70%.

The same ink-jet printing inks (A to D) as those used in the above-mentioned examples were used for printing on this cloth by the same method, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. The results are shown in Table 1.

(Comparative Example 11) Cellulose was wet-spun with a solution containing sodium hydroxide, and the average thickness of the fibers was 0.
A regenerated cellulose fabric consisting of 05d and a thread thickness of 177d was dipped in an aqueous solution of sodium hydrogencarbonate 6% and sodium alginate 23%, dehydrated at a squeezing rate of 14%, and dried to obtain a water content of 20%. Adjusted to.

The same ink-jet printing inks (A to D) as those used in the above-mentioned Examples were used for printing on this woven fabric by the same method, and the resulting prints were evaluated for sharpness, bleeding property and dyeing property. . The results are shown in Table 1.

In this case, as compared with the first embodiment, the feeding accuracy was poor in terms of transportability.

[0113]

[Table 1] ^{* 1} : Weight% of alkaline substance with respect to dry weight of fabric ^{* 2} : Weight% of water-soluble metal salt, water-soluble polymer, urea with respect to dry weight of fabric ^{* 3} : When observed with naked eyes It was judged by the sharpness of the pattern.

◯: Good Δ: Slightly inferior ×: Inferior ^{* 4} : Irregular disorder of the straight line portion of the edge was visually observed,
It was judged.

◯: No turbulence Δ: Slight turbulence ×: Many turbulence ^{* 5} : Dyeing rate = (K / S value of 100% solid part after washing with neutral detergent) / (before washing) 100% solid K / S pull
value)

[0116]

[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

[0117]

As described above, according to the ink-jet printing cloth of the present invention, it is possible to stably obtain a dyed product which is clear without bleeding and has 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 provide an excellent dyed product efficiently.

[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.

[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

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Tomoya Yamamoto 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Fumi Takade 3-30-2 Shimomaruko, Ota-ku, Tokyo Kya Non-Incorporated (72) Inventor Masahiro Haruta 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (15)

[Claims] 1. An inkjet printing cloth mainly composed of regenerated cellulose fibers, wherein the regenerated cellulose fibers have an average thickness of 0.1 to 3d, and at least 0.01 to 5% by weight based on a dry weight of an alkaline substance. Containing 0.
It contains at least 1 to 20% by weight of a water-soluble metal salt, a water-soluble polymer, urea, thiourea and a surfactant, and has a water content of 15.5.
The cloth for ink-jet printing is characterized by being ˜68.5%. 2. The regenerated cellulose fiber is a fiber having an average thickness of 0.5 to 3d, which is obtained by wet spinning of an aqueous cellulose solution containing at least sodium hydroxide.
The inkjet printing cloth described. 3. The ink-jet printing cloth according to claim 1, wherein the regenerated cellulose fibers are fibers having an average thickness of 0.3 to 1.2 d, which are obtained by wet spinning an aqueous cellulose solution containing at least copper oxide ammonia. 4. The regenerated cellulose fiber is a fiber having an average thickness of 0.1 to 2d, which is obtained by wet spinning of an aqueous cellulose solution containing at least an amine oxide.
The inkjet printing cloth described. 5. In an inkjet printing method of applying a printing ink to a cloth by an inkjet recording device, an average thickness of regenerated cellulose fibers is 0.1 to 3.
(1) a step (A) in which 0.01 to 5% by weight of an alkaline substance is contained in the cloth mainly composed of regenerated cellulose fibers (d), (2) water-soluble metal salt, water-soluble 0.01 or more of at least one substance selected from the group consisting of polymers, urea, thiourea and surfactants.
˜20% by weight and a water content of 15.5-6
Inkjet printing, which comprises a step (B step) of 8.5%, and a step (3) of applying ink to the cloth, then performing a dyeing treatment, and then a washing treatment (step C). Method. 6. The ink-jet printing method according to claim 5, wherein the step A is performed before the step C is performed. 7. The inkjet printing method according to claim 5, wherein the step A is performed after the step C is performed. 8. The regenerated cellulose fiber is a fiber obtained by wet spinning an aqueous cellulose solution containing at least sodium hydroxide, and having an average thickness of 0.5 to 3d.
8. The inkjet printing method according to any one of 1 to 7. 9. The regenerated cellulose fiber is a fiber having an average thickness of 0.3 to 1.2 d, obtained by wet spinning of an aqueous cellulose solution containing at least copper oxide ammonia, and the regenerated cellulose fiber according to claim 5. Inkjet printing method described. 10. The inkjet according to claim 5, wherein the regenerated cellulose fiber is a fiber having an average thickness of 0.1 to 2d, which is obtained by wet spinning of an aqueous cellulose solution containing at least an amine oxide. Printing method. 11. The inkjet printing method according to claim 5, wherein the inkjet recording device is a device that ejects ink by utilizing thermal energy. 12. A printed article printed by the inkjet printing method according to claim 5. 13. A processed product obtained by processing the printed material according to claim 12. 14. A processed product obtained by cutting the printed material according to claim 12 into pieces each having a predetermined size and processing the pieces into one or more pieces. 15. The method according to claim 13, wherein the processing is sewing.
Processed product according to 4.