JP3315532B2 - Fabric for inkjet printing, method for producing the same, inkjet printing method, inkjet printed matter, and printed recorded matter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fabric for ink jet printing, a method for producing the same, an ink jet printing method, an ink jet printed material, and a printed printed material.

[0002]

2. Description of the Related Art Conventionally, as a method of printing on a fabric such as cotton, silk, polyester, etc., a method called ink jet printing has been known in addition to screen printing and roller printing. The inkjet printing is performed by using an inkjet image forming apparatus that forms an image on a recording medium such as a plastic or a recording paper, using an inkjet printing apparatus that is suitable for printing and a type of fabric.

[0003] The ink jet system is one of low noise, non-impact systems in which ink is ejected and the ink or the like is directly adhered to cloth or the like. Operation is possible. Therefore, while the printing method using plate making such as screens and engraving rolls is not suitable for high-mix low-volume production, inkjet printing is a system without plate making,
Since data to be printed can be easily formed by a host system or the like, high-mix low-volume production can be performed in a short time.

[0004] In general, an ink-jet printing apparatus is
A carriage on which a recording unit (print head) is mounted;
It is provided with a transport unit for transporting the fabric, and a control unit for controlling these. Then, the recording head for ejecting ink droplets from the plurality of ejection ports is serially scanned in a direction (main scanning direction) orthogonal to the fabric conveying direction (sub-scanning direction), while the fabric is intermittently conveyed by a predetermined amount during non-printing. Things. In this printing method, printing is performed by discharging ink onto a fabric in accordance with a print signal, and has attracted attention as a quiet printing method with low running cost. In addition, by using a print head in which a number of nozzles for ejecting ink are arranged in a straight line in the sub-scanning direction, the print head scans once on the fabric, thereby performing printing with a width corresponding to the number of nozzles. .

Further, in the case of multicolor printing (color printing), a color image is formed by overlapping ink droplets ejected by a plurality of color print heads. Generally, when performing color printing, four types of print heads and ink tanks corresponding to three primary colors of yellow (Y), magenta (M) and cyan (C) or four colors including black (B) among these three primary colors Is required.

Because of the use of such an apparatus, the technique required for ink-jet printing is significantly different from that for screen and roller printing. This is due to the fact that, among the physical properties of ink used for ink-jet printing, the appropriate value of viscosity is significantly different from that of printing ink such as screens and is low, and that in ink-jet printing, measures must be taken for reliability such as clogging of the head. This is caused by system differences such as the fact that so-called additive color mixing in which several colors of ink are overprinted at the same spot, and that the ink dots are very small.

Various studies have been made on such ink-jet printing methods.
JP-A-3-31594 discloses a method of printing with a cloth containing water-soluble polymer / water-soluble salts / water-insoluble inorganic fine particles, and JP-B-63-31593 discloses that the ink has a viscosity of 200 cP or less, and Tension is 30-70d
JIS / L1079, a printing method using a fabric having a water repellency of 50 points or more is disclosed.

[0008]

However, the above-mentioned conventional printing method is based on the idea that the penetration of the ink into the fiber is suppressed to prevent the diffusion of the dye and to improve the coloring.
Although some improvement in color development can be seen, (1) the ink drying time is slow, (2) there is no backstreet because the ink does not spread, and (3) the area factor is small because the ink does not spread, which limits the color developability. And the like.

On the other hand, for example, in Japanese Patent Application Laid-Open No. 4-59282, a fabric made of a hydrophilic fiber
Ink jet dyeing fabrics containing surfactants by weight are disclosed. In the cloth treated in this manner, the ink is absorbed by the diffusion inside the fiber, so that the back-through is improved, but the dye penetrates into the fiber, which is disadvantageous in improving the color developability.

As described above, in the prior art, all the performances cannot be satisfied simultaneously even if the individual performances required for the ink-jet printing method necessary for obtaining excellent prints are satisfied to some extent. Was. Therefore, the present invention solves the above problems, clear and high density of ink bleeding, and good back-through property, high image quality, high-quality textiles for inkjet printing, and a method of manufacturing the same, An object of the present invention is to provide an ink jet printing method, a printed material, an ink jet printing apparatus, and a printed printed matter manufactured by the apparatus.

[0011]

Means for Solving the Problems In order to solve the above-mentioned problems, an ink jet textile for printing based on the first invention is provided.
A textile to be printed with an aqueous ink containing a dye using an inkjet textile printing apparatus, wherein the textile has a better wettability to the aqueous ink on the peripheral surface side of the fiber constituting the cloth than on the inner side of the fiber. There is a feature.

More specifically, the fabric has been treated in at least two stages of fabric pretreatment steps, and a non-permeable material that suppresses the penetration of the aqueous ink into the inside of the fiber and the fabric. A hydrophilic substance for improving the wettability to the aqueous ink on the peripheral surface side is sequentially contained. Here, the non-permeable material is selected from the group consisting of a water-emitting agent, a water-soluble polymer, a water-soluble salt, a cationic substance, a printing paste and a mixture thereof, and the hydrophilic substance is anionic, It is selected from the group consisting of nonionic or amphoteric surfactants and water-soluble solvents. The material of the fiber is preferably cotton.

[0013] The method for producing a fabric for ink-jet printing based on the second invention is a process for making the original fabric contain a non-permeable material for suppressing the penetration of aqueous ink into the inside of the fibers constituting the fabric. A step of drying the non-permeable material-containing cloth, and a step of further attaching a hydrophilic substance to the dried cloth to improve the wettability of the fiber with respect to the aqueous ink on the peripheral surface side thereof. . An ink jet printing method according to a third aspect of the present invention includes a step of preparing the above-described ink-jet printing cloth, a step of landing and attaching an aqueous ink containing a dye discharged from an ink-jet printing apparatus to the ink-jet printing cloth, and a pre-step. Fixing the dye in the aqueous ink adhered to the ink-jet printing cloth onto the cloth, and washing the ink-jet printing cloth on which the fixing of the dye is completed in the previous step. I do. The method includes adhering the water-soluble ink to the ink-jet printing fabric in an image form to form an image.

[0014]

[0015]

[0016]

[0017]

[0018]

According to a fourth aspect of the present invention, there is provided an ink-jet printed material comprising the cloth for ink-jet printing printed by the ink-jet printing method.

[0020] The ink-jet printed material is characterized in that the dye fixing density on the peripheral surface side of the fiber constituting the fabric is higher than the dye fixing density on the inner side of the fiber.

The printed matter according to the fifth invention is obtained by forming an image on an ink-jet printing cloth by the above-mentioned ink-jet printing method.

[0022]

Function and Examples The fiber material of the textile for ink jet printing used in the present invention is not particularly limited, and various fiber materials such as cotton, silk, wool, nylon, polyester, rayon, acrylic fiber and the like can be mentioned. Or a blend or mixed fabric thereof.

As a means for measuring the permeability (wetting property) which is a problem in the present invention, any method can be used as long as it is a means for measuring the permeability and wettability of fiber or paper.
L1092, JIS-L1096 and measurement of the absorption time and contact angle when a certain amount of liquid is dropped are preferable.

Various methods can be considered as a method for controlling the permeability and / or wettability of the ink into the fiber structure.

By including a non-permeable material in the fiber, the penetration of the ink into the fiber can be suppressed. When a certain amount of non-permeable material is added to a cloth,
It is a substance whose permeability (wettability) is worse than before the addition. Specific examples of containing a non-permeable material include, for example, a water-containing agent, a water-soluble polymer, a water-soluble salt, a cationic material, and a printing paste. Various methods such as crushing the inter-fiber wall by calendering are considered, and any of these methods may be used. Further, a method for improving the wettability of the ink to the fiber can be achieved by attaching a hydrophilic substance to the fiber. A hydrophilic substance is a substance that, when a certain amount of the substance is added to a cloth, has better wettability than before the addition. As a specific example of attaching the hydrophilic substance, various methods such as adding a surfactant and adding a water-soluble solvent are considered, and any of these methods may be used.

The treatment agent such as the non-permeable substance and the hydrophilic substance described above can be contained in the fabric by any method such as a pad method, a spray method, a dipping method, a printing method and an ink jet method.

In order to make the inside of the fiber of the fiber structure less likely to wet (permeate) with the ink and to make the fiber peripheral surface of the fiber structure more easily wet with the ink, the above-mentioned “penetration of the ink” This is achieved by a manufacturing method that includes at least a two-step process of performing “means for improving the wettability of the ink” on a fabric that has become difficult to penetrate the ink by the “means for making the ink difficult”. Other treatments may be further added to the treatment of the fabric.

The above method will be described in more detail. The water-producing agent used to make the ink hardly penetrate has a performance of repelling water, which is a main component in the ink, and includes, for example, fluorine compounds, pyridinium salts, N
-Methylol alkyl amide, alkyl ethylene urea,
Oxalin derivatives, silicone compounds, triazine compounds, polyamidoamine type softener paraffin, zirconium compounds, or mixtures thereof,
There is no need to limit.

The amount of the water-producing agent is 0.1 to 10% based on the fabric.
Preferably, it is provided. Since the effect of water generation does not change even if it exceeds 10%, a larger amount is not preferable in terms of economy. If it is less than 0.1%, the effect is inferior.

Examples of the water-soluble polymer used to make the ink hardly penetrate include celluloses such as starches, carboxymethylcellulose, methylcellulose and hydroxyethylcellulose, sodium alginate, gum arabic, guar gum, gelatin and tannin. Substances, polyvinyl alcohol-based compounds, polyethylene oxide-based compounds, acrylic acid-based water-soluble polymers, maleic anhydride-based water-soluble polymers, and the like.

The amount of the water-soluble polymer is 0.1 to
Preferably, 20% is provided. If it exceeds 20%, the degreasing property becomes extremely poor, which is not preferable in terms of economy. If it is less than 0.1%, the effect is inferior.

Examples of the water-soluble salts used to make the ink hardly penetrate include, for example, NaCl and Na ₂ S.
Examples thereof include alkali metal salts such as O ₄ , KCl, and CH ₃ COONa, and alkaline earth metal salts such as CaCl ₂ and MgCl ₂ .

The amount of the water-soluble salts is 0.3 to 5 with respect to the fabric.
Preferably, 0% is provided. Even if it exceeds 50%, there is no change in the effect of making the ink hardly penetrate, so that a larger amount is not preferable in terms of economy. If it is less than 0.1%, the effect is inferior.

Examples of the cationic substance used to make the ink hardly penetrate include various amine salts, quaternary ammonium salt type cationic surfactants, quaternary ammonium salt polymers, and polyamines. .

The amount of the cationic substance is 0.1
It is preferable that 10% to 10% be provided. If it exceeds 10%, problems such as white spot contamination of the fabric occur, which is not preferable. If it is less than 0.1%, the effect is inferior.

The calendering treatment for making the ink hardly penetrate is performed by adhering a printing paste such as a water-soluble polymer to a cloth and then applying a general method such as a paper calender, a cotton calender, an emboss calender, and a friction calender. It may be carried out using a calender or a press machine such as a rotary press.
The treatment is preferably performed at a temperature of about 10 to 50 ton / m.

When impregnated with a treatment liquid or the like to make the ink hardly penetrate, drying is performed, and then a treatment for improving the wettability is performed, the inside of the fiber already contains a non-permeable material. Therefore, the treatment liquid for improving the wettability does not permeate and adheres only to the peripheral surface of the fiber, so that the wettability on the peripheral surface side of the fiber is improved. In this case, when the wettability on the inner side and the peripheral surface side of the fiber are different from each other, as a method for measuring the wettability, the textile is subjected to ink jet printing, the fiber cross section of the printed material is observed, and the circumference of the fiber cross section is measured. It can also be confirmed by observing the difference in dye fixing density between the surface side and the inner side. That is, the dye fixing concentration on the fiber peripheral surface side of the fiber structure,
If it is higher than the dye fixing concentration on the fiber inner side, it can be said that the wettability to the ink on the fiber peripheral surface side is easier to wet than the fiber inner side. When the dye fixing density is almost the same between the peripheral surface and the inner surface, it can be said that there is no difference in wettability.

As the surfactant used for improving the wettability, an anionic, nonionic, amphoteric or other surfactant is preferable. As the anionic, a sulfonic acid type, a carboxylic acid type, a sulfate type, Phosphate ester type and the like, as nonionic, polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, ether type such as acetylene glycol, polyoxyethylene alkyl ester, ester type such as sorbitan fatty acid ester, An amino ether type such as polyoxyethylene alkylamine and an ether ester type such as polyoxyethylene sorbitan fatty acid ester can be used. As the amphoteric surfactant, a betaine type or the like can be used.

The amount of the surfactant is 0.1 to 1 based on the fabric.
Preferably, 0% is provided. If the amount exceeds 10%, there is no change in wettability, so that a larger amount is not preferable in terms of economy. If it is less than 0.1%, the effect is inferior.

The water-soluble solvent used for improving the wettability is preferably the same as that contained in the ink. For example, lower water-soluble solvents such as ethylene glycol, diethylene glycol, triethylene glycol and propylene glycol are preferred. Alkylene glycols; ethylene glycol methyl (or ethyl, propyl, butyl) ether, diethylene glycol methyl (or ethyl, propyl, butyl) ether, triethylene glycol methyl (or ethyl, propyl, butyl) ether, propylene glycol methyl (or ethyl, Propyl, butyl) ether, dipropylene glycol methyl (or ethyl, propyl, butyl) ether, tripropylene glycol methyl (or ethyl, propyl, butyl) ether Polyalkylene glycol polyethylene glycol, polypropylene glycol; lower alkyl ethers of alkylene glycols and the like
And one or two blocked hydroxyl groups represented by mono- and dialkyl ethers thereof; and glycerin,
Thiodiethylene glycol and the like can be used.

The amount of the water-soluble solvent is 0.3 to 3 with respect to the cloth.
Preferably, 0% is provided. If the amount exceeds 30%, there is no change in wettability, so that a larger amount is not preferable in terms of economy. If it is less than 0.3%, the effect is inferior.

The fabric of the present invention contains the above substances for controlling the permeability, but may contain other compounds. For example, catalysts, alkalis, acids, reduction inhibitors,
Antioxidants, leveling agents, deep dyeing agents, carriers, reducing agents, oxidizing agents, metal ions and the like are used.

After the above-mentioned treatment, drying and the like are finally carried out, and if necessary, cut to a size which can be conveyed by an ink jet device, and this is used as an ink jet textile.

The printing ink used for the ink-jet printing fabric of the present invention is not particularly limited. When the cloth is made of a material such as cotton or silk, the ink for ink-jet printing comprising a reactive dye and an aqueous medium is used. It is preferably used. In the case of materials such as nylon, wool, silk, rayon and the like, an ink for ink jet printing composed of an acidic or direct dye and an aqueous medium is preferably used. When the fabric is a polyester material, an ink for inkjet printing composed of a disperse dye and an aqueous medium is preferably used.

Preferred examples of these dyes include reactive dyes such as C.I. I. Reactive yellow 2, 15, 37, 42, 76, 95, 168, 175;
C. I. Reactive Red 21, 22, 24, 33,
45, 111, 112, 114, 180, 218, 22
6, 228, 235; I. Reactive Blue 1
5, 19, 21, 38, 49, 72, 77, 176, 2
03, 220, 230, 235; I. Reactive Orange 5, 12, 13, 35, 95; C.I. I. Reactive brown 7, 11, 33, 37, 46; I.
Reactive green 8, 19; I. Reactive violet 2, 6, 22; C.I. I. Reactive Black 5, 8, 31, 39 and the like.

Acidic and direct dyes include C.I. I. Acid Yellow 1, 7, 11, 17, 23, 25, 36, 3
8, 49, 72, 110, 127; I. Acid Red 1, 27, 35, 37, 57, 114, 138, 2
54, 257, 274; I. Acid Blue 7,
9, 62, 83, 90, 112, 185; I. Acid black 26, 107, 109, 155; I.
Acid orange 56, 67, 149; I. Direct Yellow 12, 44, 50, 86, 106, 14
2; I. Direct red 79, 80; I. Direct blue 86, 106, 189, 199;
I. Direct Black 17, 19, 22, 5, 1, 1
54, 168, 173; I. Direct orange 2
6, 39 and the like.

As disperse dyes, C.I. I. Disperse Yellow 3, 5, 7, 33, 42, 60, 64, 79,
104, 160, 163, 237; I. Disperse threads 1, 60, 135, 145, 146, 191;
C. I. Disperse Blue 56, 60, 73, 14
3, 158, 198, 354, 365, 366;
I. Disperse Black 1, 10; C.I. I. Disperse Orange 30, 73, Teraprint Red 3GN Liquid, Teraprint Black 2R, and the like.

The use amount (solid content) of these dyes is preferably in the range of 1 to 30% by weight based on the total amount of the ink.

Known aqueous media can be used together with the dye. For example, preferably lower alkylene glycols such as ethylene glycol, diethylene glycol, triethylene glycol and propylene glycol; ethylene glycol methyl (or ethyl, propyl, butyl) ether, diethylene glycol methyl (or ethyl, propyl, butyl) ether, triethylene glycol Methyl (or ethyl, propyl, butyl) ether, propylene glycol methyl (or ethyl, propyl, butyl) ether, dipropylene glycol methyl (or ethyl, propyl, butyl) ether, tripropylene glycol methyl (or ethyl, propyl, butyl) Lower alkyl ethers of alkylene glycols such as ethers; polyols such as polyethylene glycols and polypropylene glycols Chelating glycol ethers, and 1 or 2 blockade of hydroxyl groups represented by these things, dialkyl ethers; and glycerin, thiodiethylene glycol, sulfolane, N
-Methyl-2-pyrrolidone, 2-pyrrolidone, 1,3-
Dimethyl-2-imidazolidinone and the like.

The content of these aqueous media with respect to the total amount of the ink is usually preferably 0 to 50% by weight.

In the case of the water-based ink, the water as the main component is preferably in the range of 30 to 95% by weight based on the total weight of the ink.

Further, if necessary, urea or its derivative, a dispersant,
Surfactants, polyvinyl alcohol and cellulose compounds and sodium alginate as a viscosity adjuster, pH adjuster,
It is possible to add a fluorescent whitening agent, a fungicide and the like.

The ink-jet printing method of the present invention is a method of printing the above-described printing ink on the ink-jet printing cloth of the present invention and a method of treating the cloth before and after the printing. The post-processing method will be described.

The ink jet recording method and apparatus to be used may be any of conventionally known ink jet recording methods. For example, thermal energy corresponding to a recording signal is applied to ink in a print head chamber, and droplets are generated by the thermal energy. And a method and an apparatus.
As described above, the ink applied to the ink jet textile printing fabric of the present invention by the method of the present invention, in this state, since the ink is merely attached to the fabric, the subsequent steps of fixing the dye to the fiber and It is preferable to perform a step of removing unfixed dye. The fixing method of such a dye is as follows.
A conventionally known method may be used, and examples thereof include a steaming method, an HT steaming method, and a thermofix method. Unfixed dye can be removed by a conventionally known washing method.

The dried product obtained by performing the ink-jet printing and the post-processing of the fabric by the above method is obtained as the printed material or printed material of the present invention.

Next, a schematic configuration of an example of an ink-jet printing apparatus to which the present invention is applied will be described. of course,
The configuration of the image forming apparatus to which the present invention can be applied is not limited to the following configuration, and it is possible for those skilled in the art to easily change the configuration or add components that are easily considered.

FIG. 1 is a schematic side sectional view showing a schematic configuration of a printing apparatus. Here, reference numeral 1 denotes a cloth as a print medium, which is unwound in accordance with the rotation of the unwinding roller 11, and is provided at a position opposed to the printer unit 1000 via the intermediate rollers 13 and 15. After being conveyed in a substantially horizontal direction, the paper is wound on a winding roller 21 via a feed roller 17 and an intermediate roller 19.

The transport section 100 generally includes transport rollers 110 and 120 provided on the upstream and downstream sides of the printer section 1000 in the transport direction of the cloth 1 and an endless belt-type transport belt wound between the rollers. 130, and a pair of platen rollers 140 provided to extend the conveyor belt 130 with a predetermined range of appropriate tension in order to regulate the printing surface of the fabric flat when printing by the printer unit 1000, and to improve flatness. ing. Here, the transport belt 130
Is made of a metal as disclosed in Japanese Patent Application Laid-Open No. H5-212851, and an adhesive layer (sheet) 133 is provided on its surface as shown in FIG. Have been. Then, the fabric 1 is adhered to the transport belt 130 by the adhesive layer 133 by the attaching roller 150, and the flatness at the time of printing is secured.

The printing agent is applied by the printer unit 1000 in the area between the platen rollers 140 to the cloth 1 conveyed in such a state where the flatness is ensured, and the convey belt 130 or the adhesive The film is peeled off from the layer 133 and is wound up by the winding roller 21, and a drying process is performed by the drying heater 600 on the way. This drying heater 600 is particularly effective when a liquid is used as a printing agent. In addition, as the drying heater 600, an appropriate heater such as a heater that blows warm air to the cloth 1 or a heater that irradiates infrared rays can be used.

FIG. 2 is a perspective view schematically showing the printer unit 1000 and the transport system of the cloth 1, and the configuration of the printer unit 1000 will be described with reference to FIG. 1 and FIG.

First, in FIGS. 1 and 2, the printer unit 1000 is scanned in a direction different from the transport direction (sub-scanning direction) f of the cloth 1, for example, in the width direction S of the cloth 1 orthogonal to the transport direction f. It has a carriage 1010. 1
Reference numeral 020 denotes a support rail extending in the S direction (main scanning direction), and a slider 10 fixed to the carriage 1010.
12 is supported, and a slide rail 1022 for guiding is supported. Reference numeral 1030 denotes a motor serving as a driving source for performing main scanning of the carriage 1010. The driving force is transmitted to the carriage 1010 via a belt 1032 to which the carriage 1010 is fixed and other appropriate transmission mechanisms.

The carriage 1010 moves the print head 1100 having a large number of printing agent applying elements in a predetermined direction (in this example, the transport direction f) in a direction different from the predetermined direction (the main scanning direction S in this example). The print head set is held in two stages in the transport direction in this example. Each set of print heads 11
00 corresponds to a plurality of printing agents having different colors.
It is provided as a set, thereby enabling color printing. The color used for the printing agent and the number of print heads in one set can be appropriately selected according to the image or the like to be formed on the fabric 1. For example, the three primary colors of printing are yellow (Y) and magenta (M). And a combination of cyan (C) and black (Bk). Alternatively, or in addition to them, special colors (metallic colors such as gold and silver, vivid red and blue, etc.) that cannot or cannot be expressed with the three primary colors can be added to the set. Alternatively, even in the case of the same color, a plurality of printing agents may be used according to the density.

In this example, two sets of print heads 1100 arranged in the main scanning direction S are provided in two stages, one set in the transport direction f, as shown in FIG. The colors, arrangement numbers, arrangement orders, and the like of the printing agents used by the print heads in each stage may be the same for each stage or may be different depending on the image to be printed. In addition, printing may be performed again on the area printed by the main scan of the first-stage print head by the next-stage print head (complementary thinning printing is performed by the print head of each stage). Or high-speed printing may be performed by sharing the printing area. Furthermore, the number of print head stages is 2
The number of stages is not limited to one, and may be one or three or more.

In this example, the print head 1100
For example, an inkjet head, for example, a bubble jet head proposed by Canon Inc. having a heating element for generating thermal energy for causing ink to boil a film as energy used for discharging ink is used. Then, with respect to the fabric 1 which is transported in the substantially horizontal direction by the transport unit 100, the ink outlets as printing agent applying elements are used with the ink outlets facing downward, thereby eliminating the head difference between the respective outlets, The discharge conditions are made uniform to enable good image formation, and uniform recovery processing for all discharge ports is enabled.

A flexible cable 1110 provided so as to follow the movement of the carriage 1010 is connected to each print head 1100, and various signals such as a head drive signal and a head state signal are exchanged with a control unit (not shown). . In addition, ink is supplied to the print head 1100 via a flexible tube 1120 from an ink supply system 1130 containing the respective color inks.

FIG. 3 is a perspective view schematically showing an ink supply system in this embodiment. The ink supply system 1130 is composed of two systems. In other words, in the first system, the first set of ink storage tanks 1131 connected to the first set
Of the ink supply tube 1120 is connected to the head joint 1150 through the flexible tube 1110, and in the second system, the second ink supply tube 11 similarly joined to the second ink storage tank 1132
21 is connected to the head joint 1150 through the flexible tube 1110. Here, the ink supply tubes 1120 and 1121 form a circulation path including the ink supply tubes 1120a and 1121a on the outward path and the ink supply tubes 1120b and 1121b on the return path. Each of the ink storage tanks 1131 and 1132 has a pressure pump (not shown), and the ink in the tank is pressurized by the pressure pump, and the ink supply tube 112 in the outward path in FIG.
0a, 1121a, and circulates in the print head 1100, and returns to the ink supply tubes 1120b, 1121b.
1b through the ink storage tanks 1131 and 1132
To return to. In addition, the pressurized pump allows the ink supply tubes 1120 and 1121 to be refilled with ink, and circulates the ink through the head so that a fraction of the ink then flows out of the nozzles. Also, a head recovery operation can be performed. Here, the ink storage tanks 1131 and 11
Each of 32 is provided in correspondence with a printing agent having a different color, thereby enabling color printing. The number of ink storage tanks in each set can be appropriately selected according to an image or the like to be formed on the fabric 1. For example, the three primary colors of printing are yellow (Y), magenta (M) and cyan (C), or In addition, black (B
k) can be added. Alternatively, or in addition to these, it is possible to use a special color (metallic color such as gold or silver, vivid red or blue, etc.) which cannot be expressed or is difficult with the three primary colors. Alternatively, even in the case of the same color, a plurality of printing agents may be used according to the density.

The head joint 1150 is composed of a first set of head joints 1151 shown by solid lines in FIG. 3, a second set of head joints 1152 shown by broken lines, and a joint cover 1160. Be composed.

Next, a schematic configuration of a head used in the above-described apparatus will be described with reference to FIG.

FIG. 4 is a sectional perspective view for explaining a schematic configuration of an ink jet head mounted on the ink jet printing apparatus of the present invention.

The print head is constituted by a top plate 71 and a substrate 72 overlapping each other. The top plate 71 has a plurality of grooves 73 serving as nozzles for passing ink, a groove 74 serving as a common liquid chamber communicating with these grooves, and a supply port 75 for supplying ink to the common liquid chamber. On the other hand, the substrate 72 is formed by integrally forming an electrothermal converter 76 corresponding to each nozzle and an electrode 77 for supplying power to each electrothermal converter by a film forming technique. The top plate 71 and the substrate 72 are combined to form a plurality of ejection ports (orifices) 78 for ejecting ink.

Here, the process of forming ink droplets of the bubble jet method performed by the print head will be briefly described.

First, when the heating resistor (heater) reaches a predetermined temperature, a film bubble covering the heater surface is generated. The internal pressure of this bubble is very high, pushing out the ink in the nozzle. The ink moves toward the common liquid chamber outside the nozzle and in the opposite direction by the inertial force of the extrusion. As the movement of the ink proceeds, the internal pressure of the bubble becomes negative, and the flow velocity resistance is added, so that the speed of the ink inside the nozzle becomes slow. Since the ink discharged from the nozzle opening (orifice) is faster than the inside of the nozzle, constriction occurs due to the balance of inertial force, flow path resistance, shrinkage of air bubbles, and ink surface tension, resulting in separation and droplet formation. At the same time as the bubble is contracted, ink is supplied from the common liquid chamber into the nozzle by the capillary force and waits for the next pulse.

As described above, a print head (hereinafter, also referred to as an ink jet head) using an electrothermal conversion element as an energy generating means (hereinafter, also referred to as an energy generating element) has a one-to-one correspondence with a liquid by a driving electric pulse signal. Bubbles can be generated in the ink in the path, and the growth and contraction of the bubbles can be performed immediately and appropriately, so that ink droplet ejection with particularly excellent responsiveness can be achieved.
In addition, it is easy to make print heads more compact, and to fully utilize the advantages of IC technology and macro processing technology, which have recently achieved remarkable advances in technology in the semiconductor field and improved reliability, making it easy to achieve high-density mounting. This is advantageous because the manufacturing cost is low.

<Experimental Examples and Comparative Examples> (A). Fabrication of Inkjet Textile Fabric Pretreatment 1 shown in Tables 1 and 2 was carried out by a pad method using a 100% cotton broad woven fabric (merchantized product), a 100% nylon taffeta fabric, and a 100% polyester decine fabric. Thereafter, drying was performed with a mangle at a squeezing ratio of 70% and a drying temperature of 120 ° C. for 2 minutes. This fabric was further subjected to the pretreatment 2 shown in Tables 1 and 2 by the pad method in the same manner.
Drying was performed in 2 minutes. In addition to the examples as pretreatment prescription,
Table 3 also shows the treatment formula of the comparative example which is out of the scope of the present invention.

[0075]

[Table 1]

[0076]

[Table 2]

[0077]

[Table 3]

Water-producing agent 1-Sumifluoyl EM51 / Fluorine-based water-producing agent (manufactured by Sumitomo Chemical) Water-producing agent 2-TSW831 / CW80 / Silicone-based water-producing agent (manufactured by Toshiba Silicone) Water-producing agent 3-paraguard 519Z / Reactive Fluororesin Water Propellant (Ohara Palladium) Activator 1-Neugen HC / Nonionic Surfactant (Daiichi Kogyo Seiyaku) Activator 2-Neocol SW / Anionic Surfactant (Daiichi Kogyo Seiyaku) Activator 3-Miggregal GWL / Nonionic surfactant (Senka) Water-soluble polymer 1-carboxymethylcellulose Cationic substance 1-Sunfix PRO / Polyamine (Sanyo Chemical) (B). Preparation of Ink for Ink-Jet Printing Textile ink, reactive dye ink and disperse dye ink were prepared as follows. The total amount of ink was 100
Department.

(1) Reactive dye ink 10 parts Reactive dye 40 parts Thiodiglycol 40 parts Water 50 parts (The dye used was CI Reactive Yellow 95,
C. I. Reactive Red 226, C.I. I. Reactive Blue 15, C.I. I. Reactive Black 39) (2) Acid dye ink Acid dye 10 parts Diethylene glycol 40 parts Water 50 parts (The dyes used were CI Acid Yellow 110 and C.I.
I. Acid Red 266, C.I. I. Acid Blue 9
0, C.I. I. Acid Black 26) (3) Disperse Dye Ink Disperse Dye 10 parts Thiodiglycol 40 parts Water 50 parts (The used dyes are CI Disperse Yellow 42, Tera Print Red 3GN Liquid / Ciba Geigy disperse dye, Disperse Blue 56, Terra Print Black 2R / Disperse dye manufactured by Ciba Geigy) (C). Ink-jet printing Using a bubble jet printer BJC-820J made by Canon as an ink-jet recording apparatus, the above-described printing ink was refilled, a backing was attached to a cloth, and printing was performed so that the paper could be transported (recording density: 360 dpi, ink ejection) 45 ng). The recording device is not limited to this, and any device may be used.

(D). Post-treatment The printed fabric is treated with reactive dye ink at 100 ° C for 8 hours.
For 30 minutes at 100 ° C. for the acidic dye ink and 10 minutes at 180 ° C. for the disperse dye ink, followed by washing and drying.

(E). Evaluation of Printed Material The obtained printed material and fabric were evaluated as follows, and the results are shown in Table 1.

(1) Bleeding: The linearity of the thin line portion was visually determined.

：: good Δ: slightly poor ×: poor (2) Density (OD);
It measured at 18 and judged by the OD value.

：: OD value of 1.3 or more Δ: OD value of 0.8 to 1.2 ×: OD value of less than 0.8 (3) Through-through property: Macbeth densitometer RD918 for front and back of solid printed area And the ratio of the OD value (OD /
(OD in Table). (Cotton) ○: 0.70 or more Δ: 0.60 to 0.69 ×: less than 0.60 (nylon, polyester) ○: 0.90 or more Δ: 0.80 to 0.89 ×: less than 0.80 (4) Drying property: 0.03 g of the ink was dropped on a cloth, and the drying time was determined based on the time required for absorption.

：: 10 seconds or less Δ: 11 to 30 seconds ×: 31 seconds or more (5) Permeability and wettability (contact angle): 0.03 g of ink was dropped on a cloth, and the contact angle with the cloth was measured ( Those with a small contact angle are easy to get wet (high wettability).

(Contact angle) small: less than 90 ° (measurement is impossible due to passing through) Medium: 90 to 110 ° large: over 110 ° (6) Dye distribution; cut the fabric so that the fiber cross section of the ink-jet printed matter can be observed Then, the difference in the fixing density of the dye between the fiber peripheral side and the inner side was observed with a microscope. Since the OD was high in the dark color over a wide area of the fiber peripheral surface, this was evaluated as ○.

：: The color is dark over a wide area of the fiber peripheral surface and the inside of the fiber is light. Δ: The color is dark only in a part of the fiber peripheral surface. As is clear from Tables 1 to 3, all of the examples have no bleeding, high density in the table, excellent back-through property and excellent drying property, whereas all the performances in the comparative example are excellent. Could not be satisfied.

(Others) In the prior art, the coloring property, the bleeding-preventing property, and the back-through property are basically contradictory properties, and it is said that it is difficult to satisfy these performances at the same time. As described above, by making the ink permeability or wettability different between the inner side and the peripheral side of the fibrous structure, it is possible to satisfy all the performances of color development, anti-bleeding property, back-through property, and ink drying property. did it. In the present invention,
Although "penetration" and "wet" are used almost as synonyms, they are used properly in some cases to make them easier to understand. Further, the “peripheral surface” is a fiber surface meaning an outer periphery in a cross section of the fiber. For example, assuming that the inner side of the fiber structure is less likely to wet (permeate) to the ink and the peripheral side is more likely to wet (permeate) as in the present invention, the ink that has landed on the fabric by inkjet recording will be Although it is easy to spread in the circumferential direction of the fiber, it is difficult to be absorbed in the inner (depth) direction of the fiber. In such a case, the ink is diffused to the peripheral surface of the fiber, and hardly exists inside the fiber. Such a state is the same with respect to, for example, suppressing the infiltration into the interior of the fiber as compared with the conventional technique of "suppressing the penetration of the ink into the interior of the fiber and preventing the diffusion of the dye", There is a difference as to whether or not. In the prior art, the ink hardly penetrates or wets both inside and around the fiber, so that the ink does not spread in the circumferential direction of the fiber. Due to this "difference in the spread of the fiber in the circumferential direction", there was no satisfactory color development in the prior art and the back-through property was poor, but by applying the present invention, the area factor became large and the color development Is improved, and the ink reaches the back by transmitting along the fiber peripheral surface, and the back-through property is improved.

On the other hand, when compared with the prior art method of “containing a surfactant in the fiber and absorbing the ink by diffusion inside the fiber”, this conventional technique improves the back-through property, but the dye penetrates into the fiber. As a result, the absorption of light by the dye is not efficient, and the color developability is poor. On the other hand, in the present invention, it is considered that the ink is not absorbed into the fiber, so that the color developing property becomes very good.

[0090]

As described above, according to the fabric for ink-jet printing of the present invention, the method for manufacturing the same, the ink-jet printing method, the ink-jet printed matter, the ink-jet printing apparatus, and the printed matter produced by the apparatus, Ink-jet printing fabrics that are printed by the ink-jet printing ink ejected by the printing apparatus include a non-permeable material and a hydrophilic material.
Since it is contained in at least two stages of fabric processing steps, it is possible to obtain clear, clear, high-density, good back-through, high-quality, high-quality printed matter without blurring, and ink drying during printing. Because of its excellent properties, printing without ink stains is possible.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing a schematic configuration of an inkjet printing apparatus to which the present invention is applied.

FIG. 2 is a perspective view schematically illustrating a printer unit and a transport unit in FIG. 1;

FIG. 3 is a schematic perspective view of an ink supply system in the apparatus of FIG.

FIG. 4 is a perspective view for explaining a schematic configuration of a print head mounted on the apparatus of FIG.

[Explanation of symbols]

 Reference Signs List 1 print medium (fabric) 100 transport unit 1000 printer unit 1010 carriage 1100 printhead 1130 ink supply system 1140 connecting member 1150 head joint 1160 joint cover

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06P 5/00 B41J 2/01 B41J 2/21 B41M 5/00

Claims (11)

(57) [Claims] 1. A method for producing a dye using an ink jet printing apparatus.
Inside a fabric printing is performed by an aqueous ink, the fabric peripheral surface of the fibers constituting the fabric of fibers comprising
A fabric for inkjet printing, wherein the fabric has better wettability to the aqueous ink than to the side . 2. The method according to claim 1, wherein the fabric has at least two stages.
Treated by a treatment step, the fiber
Impermeable material and the inhibit penetration of serial aqueous ink
Hydrophilicity that improves the wettability of fibers to the aqueous ink
The fabric for ink jet printing according to claim 1, characterized in that it contains substances in order . 3. The method according to claim 1, wherein the non-permeable material is a water-soluble agent,
Molecules, water-soluble salts, cationic substances, paste for printing and
The hydrophilic substance selected from the group consisting of mixtures thereof;
Anionic, nonionic or amphoteric surfactant
And selected from the group consisting of water-soluble solvents
The textile for inkjet printing according to claim 2, wherein 4. The fiber material is cotton.
The textile for inkjet printing according to any one of the above . 5. A raw fabric, against the fibers constituting the fabric
Penetration of the aqueous ink contain a non-permeable material suppresses that
That process, step of drying the non-permeable material containing fabric and the drying fabric further get wet to aqueous ink of the fiber
Depositing a hydrophilic substance to improve the properties are, sequentially actual
A method for producing a fabric for ink-jet printing, which is performed. 6. The fabric for ink-jet printing according to claim 5.
Fabric manufactured by a fabric manufacturing method.
Fabric for jet printing . 7. The method according to claim 1, wherein
A step of preparing an ink-jet printing cloth, and an ink- jet printing apparatus for the ink-jet printing cloth.
Landing the aqueous ink containing the dye discharged from the device, and attaching the aqueous ink to the inkjet printing fabric in the previous process.
Ink-jet printing process which comprises the steps of washing the dyed fuel in the aqueous ink process to fix the said fabric, and in the previous step an ink jet printing cloth which fixing has been completed of the dye. 8. The ink-jet printing method according to claim 1 , wherein
Claims: An image is formed by attaching an image to a textile for printing.
7. The ink jet printing method according to 7 . 9. An ink-jet printed material printed by the ink-jet printing method according to claim 7. Description: 10. A dye fixation density of the peripheral surface side of the fibers constituting the ink-jet prints are ink-jet printing of claim 9, wherein greater than dye fixation density of the inner side of the fibers. 11. A printed matter obtained by forming an image on an ink-jet printing cloth by the ink-jet printing method according to claim 8 .