JP2022121895A - Textile printing device and method - Google Patents

Abstract

To provide a textile printing device and a method capable of suppressing occurrence of image density difference on rear and front sides of fabric while maintaining image quality.SOLUTION: A textile printing device comprises: a fabric pre-processing unit; a printing unit for applying color material ink to the fabric to print an image; and a control unit. The pre-processing unit performs processing for adjusting permeability of the color material ink into the fabric. According to a permeability image representing a distribution of degree of permeability of the color material ink with respect to the fabric which is desired in an image printed by the printing unit, the control unit controls the adjustment processing of the permeability at the pre-processing unit so that the permeability increases as the degree of permeability is higher, and controls the amount of the color material ink at the printing unit so that the amount of application increases as the degree of permeability is higher.SELECTED DRAWING: Figure 1

Description

The present invention relates to a textile printing apparatus and a textile printing method. More specifically, the present invention relates to a textile printing apparatus and a textile printing method that suppress the occurrence of image density differences between the front and back surfaces of a fabric while maintaining image quality.

2. Description of the Related Art Conventionally, there has been known a textile printing technique in which a coloring material ink (hereinafter also simply referred to as "ink") is used to print on a fabric by an inkjet method or a screen printing method. In textile printing, there are problems related to the permeability of the ink into the fabric, such as deterioration of image quality due to the occurrence of bleeding, and the problem that the ink concentration is different on the front and back of the fabric. In order to solve this problem, a textile printing apparatus has been adopted that performs inkjet textile printing after applying a pretreatment liquid for adjusting the permeability of the ink to the fabric (see, for example, Patent Document 1).

However, in the textile printing apparatus of Patent Document 1, the treatment with the pretreatment liquid is uniformly performed on the entire fabric. Thus, for example, the ability to adjust ink penetration is unified regardless of the color density of the image being printed. For example, if the permeability is adjusted according to a region with a high color density in an image, in a region with a low color density, that is, a region where the amount of ink applied is small, the ink permeability is insufficient and the color density on the back side is lower than that on the front side. If the ink becomes thin, or if the permeability is too high, there is a problem that the amount of ink on the surface of the fabric decreases and the color density on the surface becomes light.

On the other hand, Patent Document 2 describes that the texture of the fabric is damaged by the application of the pretreatment liquid, and that the suppression of bleeding and the maintenance of the texture are a trade-off. In an inkjet textile printing apparatus comprising, based on the base material information of the fabric and the image data to be printed on the fabric, calculating the application position and application amount of the pretreatment liquid containing the functional material that suppresses the wetting and spreading of the ink, An image processing apparatus configured to apply the pretreatment liquid to the fabric is described. Specifically, Patent Document 2 states that by applying the pretreatment liquid to the vicinity of the contour of the image, it is possible to achieve both the feel of the fabric and the suppression of bleeding.

However, the configuration of the image processing apparatus described in Patent Literature 2 cannot sufficiently solve the problem that images, particularly color densities, differ between the front and back surfaces of the fabric.

JP 2005-246734 A WO2018/012229

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems and circumstances, and the problem to be solved is to provide a textile printing apparatus and a textile printing method that suppress the occurrence of image density differences between the front and back surfaces of a fabric while maintaining image quality. is.

In order to solve the above problems, the present inventors, in the process of studying the causes of the above problems, created a penetration degree image representing the desired distribution of the penetration degree of the coloring material ink with respect to the fabric, and according to the penetration degree image, By controlling the coating amount of the functional ink that adjusts the permeability of the fabric and the coating amount of the coloring material ink, it is possible to suppress the occurrence of a difference in image density between the front and back of the fabric while maintaining the image quality. That is, the above problems related to the present invention are solved by the following means.

1. A textile printing apparatus comprising a fabric pretreatment unit, a printing unit for applying colored ink to the fabric to print an image, and a control unit,
The pretreatment unit performs a treatment for adjusting the permeability of the color ink to the fabric,
The control unit performs the permeability adjustment processing in the preprocessing unit according to a penetration degree image representing a distribution of the degree of penetration of the colored ink onto the fabric, which is required in the image printed by the printing unit. A printing apparatus, wherein control is performed so that the permeability increases as the penetration degree increases, and the application amount of the coloring material ink in the printing portion is controlled so as to increase as the penetration degree increases. .

2. The pretreatment unit has a mechanism for applying a functional ink containing a permeation inhibitor or a permeation enhancer to the fabric by an inkjet method, and the control unit applies the amount of the functional ink according to the degree of penetration image. 2. The textile printing apparatus according to claim 1, which controls the application position and the application position.

3. 3. The textile printing apparatus according to claim 1 or 2, wherein the control unit adjusts the penetration image in accordance with the state information of the fabric.

4. The mode information of the fabric is selected from the type of fibers that make up the fabric, the thickness of the fabric, the fiber density of the fabric, the ratio of chemical fibers in the fibers that make up the fabric, the weaving method of the fabric, and the thickness of the fibers that make up the fabric. 4. The textile printing apparatus according to item 3, wherein the printing apparatus is at least one of

5. 5. The textile printing apparatus according to any one of items 1 to 4, wherein the control unit adjusts the penetration image according to the environmental temperature and the environmental relative humidity.

6. 6. The method according to any one of items 1 to 5, wherein the penetration image is an image set so that the penetration becomes higher according to the height of the color density of the image printed by the printing unit. A printing apparatus according to any one of claims 1 to 3.

7. 7. Any one of items 1 to 6, wherein the penetration image is an image for a non-edge portion excluding an edge portion having a predetermined width from the image printed by the printing portion. or the printing apparatus according to item 1.

8. 6. The textile printing apparatus according to any one of claims 1 to 5, wherein a user-defined penetrance image is used as the penetrance image.

9. A textile printing method comprising a fabric pretreatment process, a printing process of applying colored ink to the fabric to print an image, and a control process,
The pretreatment step performs a treatment for adjusting the permeability of the color ink to the fabric,
The control step performs the permeability adjustment process in the pretreatment step according to a permeability image representing a distribution of the permeability required in the image printed by the printing step of the coloring material ink on the fabric. A printing method, wherein control is performed so that the permeability increases as the penetration degree increases, and the application amount of the coloring material ink in the printing step is controlled so as to increase as the penetration degree increases. .

By means of the above-described means of the present invention, it is possible to provide a textile printing apparatus and a textile printing method that suppress the occurrence of image density differences between the front and back surfaces of a fabric while maintaining image quality. The expression mechanism or action mechanism of the effect of the present invention is presumed as follows.

In the present invention, when printing on a fabric, a penetration image is created that shows the distribution of penetration required for the color ink in the image to be printed. is increased, and the coating amount of the coloring ink is increased as the penetration is higher.

As a result, for example, in an image to be printed, the area where an increase in the amount of the coloring ink applied to the fabric is required, that is, the area where an increase in the permeability of the coloring ink is required increases, resulting in a , it is possible to apply a desired amount of colorant ink. In this way, for example, in a region where the coloring material ink should be sufficiently penetrated to the back surface of the fabric, printing can be performed with almost no difference in density between the front surface and the back surface of the fabric without causing deterioration in image quality such as bleeding. It can be carried out.

Schematic diagram schematically showing an example of the textile printing apparatus of the present invention. Block diagram showing the main part of the control system of the textile printing apparatus shown in FIG.

A textile printing apparatus of the present invention includes a fabric pretreatment unit, a printing unit that applies colored ink to the fabric to print an image, and a control unit, wherein the pretreatment unit comprises: A process for adjusting the permeability of the coloring material ink to the fabric is performed, and the control unit expresses the distribution of the penetration degree of the coloring material ink to the fabric required in the image printed by the printing unit. According to the penetration degree image, the penetration adjustment processing in the pretreatment section is controlled so that the penetration increases as the penetration becomes higher, and the application amount of the color material ink in the printing section is controlled by the penetration It is characterized by controlling to increase as the degree is higher. This feature is a technical feature common to the inventions according to the respective claims.

As an embodiment of the textile printing apparatus of the present invention, from the viewpoint of exhibiting the effects of the present invention, the pretreatment unit may include a mechanism for applying functional ink containing a penetration inhibitor or a penetration accelerator to the fabric by an inkjet method. It is preferable that the controller controls the application amount and application position of the functional ink according to the penetration image.

As an embodiment of the textile printing apparatus of the present invention, it is preferable that the control section adjusts the penetration degree image according to the state information of the fabric. In the aspect using the functional ink, the application amount of the functional ink and the application amount of the coloring material ink are changed accordingly. The mode information of the fabric is selected from the type of fibers that make up the fabric, the thickness of the fabric, the fiber density of the fabric, the ratio of chemical fibers in the fibers that make up the fabric, the weaving method of the fabric, and the thickness of the fibers that make up the fabric. It is preferable that it is at least one kind.

Moreover, it is preferable that the control unit adjusts the penetration image according to the environmental temperature and the environmental relative humidity. In the aspect using the functional ink, the application amount of the functional ink and the application amount of the coloring material ink are changed accordingly.

As an embodiment of the textile printing apparatus of the present invention, from the viewpoint of exhibiting the effect of the present invention, the penetration image is arranged such that the penetration becomes higher as the color density of the image printed by the printing unit increases. It is preferably a set image.

As an embodiment of the textile printing apparatus of the present invention, from the viewpoint of manifestation of the effects of the present invention, the penetration image is targeted to non-edge portions excluding edge portions having a predetermined width from the image printed by the printing portion. It is preferable that the image is

As an embodiment of the textile printing apparatus of the present invention, it is preferable to use a penetrance image defined by a user as the penetrance image from the viewpoint of exhibiting the effects of the present invention.

The textile printing method of the present invention is a textile printing method comprising a fabric pretreatment step, a printing step of applying colored ink to the fabric to print an image, and a control step, wherein the pretreatment step comprises the A process for adjusting the permeability of the coloring material ink to the fabric is performed, and the controlling step is the penetration representing the distribution of the penetration degree of the coloring material ink to the fabric required in the image printed by the printing step. According to the degree image, the permeability adjusting process in the pretreatment step is controlled so that the permeability increases as the permeability increases, and the coating amount of the coloring material ink in the printing step is controlled according to the permeability. is controlled so as to increase as the value increases.

DETAILED DESCRIPTION OF THE INVENTION The present invention, its components, and the forms and modes for carrying out the present invention will be described in detail below with reference to the drawings. However, the scope of the present invention is not limited to the illustrated examples. The illustrated textile printing apparatus can be modified as appropriate without departing from the gist of the present invention. In the present application, "-" is used to mean that the numerical values before and after it are included as the lower limit and the upper limit.

[Printing equipment]
The textile printing apparatus of the present invention has a preprocessing section, a printing section, and a control section, and each section operates as follows.

The pretreatment section performs a treatment for adjusting the permeability of the color ink to the fabric.
The printing unit applies colored ink to the fabric to print an image.
The control unit controls the preprocessing unit and the printing unit according to the penetrance image as described in (1-1) and (1-2) below, respectively.

(1-1) The permeability adjusting treatment in the pretreatment section is controlled so that the higher the permeability, the higher the permeability.
(1-2) Control the application amount of the colored ink in the printed portion so that it increases as the penetration level increases.

The penetration image is an image representing the distribution of the penetration of the coloring material ink into the fabric (in this specification, also referred to simply as the "penetration"). It is the degree of penetration required in an image to be printed (hereinafter also referred to as a “printed image”).

In the textile printing apparatus, the application position and the application amount of the color ink are determined based on the printed image. The unit of the application area of the color material ink is, for example, the pixel unit. The degree of penetration is set in units of areas where the color ink is applied, for example, in units of pixels. The penetrance image is an image showing the distribution of the penetrance obtained in units of application of the color ink, for example, in units of pixels.

When the permeation degree is set in units of pixels, the permeation degree in an arbitrary pixel unit can be determined, for example, by a specific fabric as a reference (the type of fibers that make up the fabric, the thickness of the fabric, the fiber density of the fabric, the A fabric for which the ratio of chemical fibers in the fiber, the weave of the fabric and the thickness of the fibers that make up the fabric are specified) is selected as the reference fabric, and the standard environment (specific environmental temperature and environmental relative humidity) is used as the standard penetration depth.

Specifically, the penetration degree required for each pixel based on the printed image is set as the reference value "1" for the penetration degree of the color material ink in the reference environment with respect to the fabric (reference cloth) that has not been pretreated. is set as a relative value to the reference value. Specifically, the degree of penetration can be measured as the penetration depth of a predetermined amount of colorant ink in the thickness direction of the fabric. When the absolute value of the reference penetrance is small, the penetrance is adjusted to increase the penetrance. In this case, for example, if the minimum value of penetration is 1 and the penetration required for each pixel based on the printed image is 1.5 times the reference value, the penetration is set to 1.5. Create a penetrance image as

On the other hand, when the absolute value of the reference penetrance is sufficiently large, the penetrance is adjusted so as to decrease the penetrance. In this case, for example, if the maximum value of penetration is 1 and the penetration required for each pixel based on the printed image is 0.5 times the reference value, the penetration is set to 0.5. Create a penetrance image as

Here, the degree of penetration required for each pixel based on the printed image is, for example, a high degree of penetration corresponding to the height of the color density in the printed image. A detailed description will be given in the description of the control unit described later.

The process of adjusting the permeability of the colored ink to the fabric, which is performed by the pretreatment unit of the textile printing apparatus of the present invention, is a process of applying a functional ink containing a permeation suppressor or a permeation enhancer to the fabric. preferable. A functional ink containing a permeation enhancer is used, for example, when the absolute value of the reference permeation described above is small. A functional ink containing a permeation inhibitor is used, for example, when the absolute value of the reference permeation described above is sufficiently large. Moreover, it is preferable that the application of the functional ink is performed by an inkjet method. In this case, the controller controls, for example, the application amount and application position of the functional ink according to the penetration image.

Hereinafter, the textile printing apparatus of the present invention will be described with reference to the textile printing apparatus in which pretreatment is performed using functional ink, as shown in FIG. 1, but the present invention is not limited to this. FIG. 1 is a schematic diagram schematically showing an example of the textile printing apparatus of the present invention. FIG. 2 is a block diagram showing the main part of the control system of the textile printing apparatus shown in FIG.

The textile printing apparatus 100 shown in FIG. 1 includes a fabric feeding section 101 for feeding a fabric T1, a transport section 103 for transporting the fabric, a pretreatment section 10 for applying functional ink Pr to the fabric T1, and a pretreated fabric T2. (hereinafter also referred to as "pre-treated fabric T2"); a printing unit 20 that applies the colored ink In; a drying unit 105 that dries the colored ink In; (also referred to as "printed fabric T3")), a control unit 30 for controlling each member, and the like.

In FIG. 1, the direction in which the fabric T1 is conveyed is indicated by an arrow. Essential components of the textile printing apparatus 100 are the preprocessing section 10 , the printing section 20 , and the control section 30 . The textile printing apparatus 100 may have components other than the components shown in FIG. 1, if necessary. Other structural members include, for example, a functional ink drying unit that dries functional ink Pr between the preprocessing unit 10 and the printing unit 20, and a fixing unit provided downstream of the drying unit 105 in the transport direction. be. Each component of the textile printing apparatus 100 will be described below.

(Fabric feeding section)
The fabric T1 is installed in a fabric delivery section 101 provided on the upstream side of the pretreatment section 10 in the conveying direction. The cloth delivery unit 101 includes a rotating shaft on which the roll-shaped cloth T1 is mounted, a motor (not shown) that rotates the rotating shaft in a predetermined rotating direction, and the like. The fabric delivery unit 101 delivers the fabric T1 to the downstream side in the transport direction along the rotation of the rotating shaft by driving the motor. The fabric T1 may be a continuous fabric as described above, or may be a fabric separated one by one.

(Conveyor)
The transport section 103 transports the fabric T1 delivered from the fabric delivery section 101 . In FIG. 1, the fabric T1 is transported by the transport rollers, but for example, the fabric T1 may be transported by being attached to a transport belt.

(Pretreatment part)
The pretreatment unit 10 is a member that applies a functional ink Pr containing a permeation inhibitor or a permeation enhancer to the fabric T1. As the pretreatment unit 10, specifically, a functional ink coating device or the like is exemplified. The application of the functional ink Pr in the pretreatment unit 10 is performed while the application amount, application position, and the like are controlled by the control unit 30 . The control of the preprocessing unit 10 by the control unit 30 is performed according to the penetrance image. In order to apply the functional ink Pr corresponding to the penetration image, the ink jet method is preferable as the application method of the pretreatment unit 10 .

When the inkjet method is used as the method of applying the functional ink, the functional ink applying device has a head for ejecting the functional ink and a carriage on which the head is mounted. The head and carriage may have the same configuration as the head and carriage in the colored ink coating apparatus described later.

As for the functional ink Pr, for example, in the case of using a fabric having good permeability of the coloring material ink, a functional ink Pr containing a permeation suppressing agent (hereinafter also referred to as "permeation suppressing ink") is used. On the other hand, when using a fabric with insufficient penetration of the coloring material ink, a functional ink Pr containing a penetration accelerator (hereinafter also referred to as "penetration promoting ink") is used. The permeation suppressing ink and the permeation promoting ink can be used singly or in combination of two or more types. It is preferred to use one of inks or penetration enhancing inks.

The functional ink applicator has two heads, one of which is for the permeation-suppressing ink and the other is for the permeation-promoting ink. . Alternatively, the functional ink applicator may have one head, and the functional ink Pr supplied to the head may be permeation suppressing ink or permeation promoting ink depending on the type of fabric.

Here, the preprocessing unit 10 is controlled by the control unit 30 as described in (1-1) above. Specifically, the preprocessing unit 10 controls the application amount of the functional ink Pr so that the higher the penetration in the penetration image, the higher the penetration. The control of (1-1) is performed as follows for the permeation suppressing ink and the permeation promoting ink.

When the permeation suppressing ink is used, the application amount of the permeation suppressing ink is set smaller for a pixel region with a higher penetrance in the permeation image, and is set larger for a pixel region with a lower penetrating degree. When the permeation suppressing ink is used, the relationship between the degree of penetration and the application amount of the permeation suppressing ink can be represented by a first-order polynomial with a negative proportional coefficient.

When the permeation promoting ink is used, the application amount of the permeation promoting ink is set larger for a pixel region with a higher permeation degree in the permeation degree image, and the application amount of the permeation suppressing ink is set smaller for a pixel region with a lower permeation degree. When the penetration promoting ink is used, the relationship between the degree of penetration and the amount of penetration promoting ink applied can be represented by a first-order polynomial with a positive proportional coefficient.

<Functional ink>
The permeation suppressing ink can be used without any particular limitation as long as it has a function of suppressing the permeation of the coloring material ink. As the permeation-suppressing ink, specifically, a permeation-suppressing ink containing an aggregating agent having an effect of aggregating the color ink is preferable. In the following, as the permeation-suppressing ink, a permeation-suppressing ink containing an aggregating agent will be described as an example.

Also, the penetration promoting ink can be used without any particular limitation as long as it has a function of promoting the penetration of the colorant ink. As the penetration promoting ink, specifically, a penetration promoting ink containing a penetrant that improves the wettability of the coloring material ink to the fabric is preferable. Hereinafter, as the penetration promoting ink, a penetration promoting ink containing a penetrating agent will be described as an example.

《Penetration suppression ink》
The permeation suppression ink is applied to the fabric by, for example, an inkjet method. When the permeation suppressing ink is applied by an inkjet method, the viscosity of the permeation suppressing ink is increased by adding a solvent or the like to the flocculant so that the permeation suppressing ink can be ejected from the nozzle of an inkjet head (hereinafter also simply referred to as "head"). adjusted. The permeation-suppressing ink contains, for example, a flocculant, and may further contain water, an organic solvent, and a surfactant as basic components.

When the ink is applied by an inkjet method, the viscosity of the permeation suppressing ink is preferably in the range of 1 to 40 mPa·s, more preferably in the range of 5 to 10 mPa·s. The viscosity of the permeation-suppressing ink can be measured at 25° C. with an E-type viscometer. The number of revolutions can be set according to the viscosity and can be, for example, 10 rpm or 20 rpm. Unless otherwise specified, the viscosity in this specification is the viscosity at 25°C measured by the above method.

[Flocculant]
The flocculant preferably contains a water-soluble cationic polymer, an organic acid or a polyvalent metal salt, more preferably a water-soluble cationic polymer or a polyvalent metal salt.

The above-mentioned water-soluble cationic polymer and polyvalent metal salt aggregate anionic components in the colorant ink (for example, pigments, dyes, dispersing polymers, components having anionic groups in polymer fine particles, etc.) by salting out. can be done. The organic acid can aggregate anionic components in the ink by pH fluctuation.

Use of an organic acid generally results in an acidic pH. As a result, a resin such as an adhesive used in the head may be degraded, resulting in inferior head durability. The pH of the polyvalent metal salt is in the neutral to weakly alkaline range, and the pH of the water-soluble cationic polymer can be adjusted to the neutral range by appropriately selecting the product number and the like. Thus, from the viewpoint of being able to adjust the pH to an appropriate range, the flocculant is more preferably a water-soluble cationic polymer or a polyvalent metal salt.

A water-soluble cationic polymer is a water-soluble resin having cationic groups. Cationic groups include, for example, primary to tertiary amino groups and quaternary ammonium salts. Examples of water-soluble cationic polymers include (co)polymers obtained by homopolymerizing or copolymerizing monomers having cationic groups such as allylamine, diallylamine, alkyleneamine, dimethylallylamine, methyldiallylamine, and diallyldimethylammonium chloride, Ring-opening polymers of cyclic amines such as aziridine (ethyleneimine) and the like are included. The above monomers may be hydrochlorides, sulfates, acetates, and the like. The water-soluble cationic polymer may also be a copolymer of the above monomer and sulfur dioxide.

Furthermore, the water-soluble cationic polymer may be a copolymer of the above monomer and a monomer having a vinyl group other than the above monomer, such as acrylamide, acrylate, methacrylate, arylate, styrene, and the like.

Examples of water-soluble cationic polymers include polyallylamine, allylamine diallylamine copolymer, polydiallylamine, polymethyldiallylamine, diallylamine sulfur dioxide copolymer, methyldiallylamine sulfur dioxide copolymer, polyvinylamine, polyethyleneimine, polydiallyldimethylammonium. Chloride and the like are included. Examples of water-soluble cationic polymers also include (co)polymers in which the constituent monomers in the above (co)polymers are hydrochlorides, sulfates, acetates, or the like.

Examples of commercially available water-soluble cationic polymers include KHE100L and FPA100L manufactured by Senka Co., Ltd., PAA series and PAS series (PAS-92A, PAS-M-1A, PAS-21CL, PAS-J-81, etc.) manufactured by Nittobo Medical. ).

When the permeation-suppressing ink contains a water-soluble cationic polymer as a flocculating agent, the permeation-suppressing ink may contain high-molecular fine particles containing an acrylic polymer as a main component in order to improve the fixability of the coloring material. The polymer constituting the fine particles preferably has a glass transition temperature of −10° C. or lower and a weight average molecular weight of 100,000 or higher. When the permeation-suppressing ink is applied by an inkjet method, the fine polymer particles preferably have a particle diameter of 50 to 500 nm as determined by a light scattering method from the viewpoint of ejection from the head. Furthermore, from the above point of view, it is preferable not to contain polymer microparticles.

The organic acid is capable of aggregating the pigment contained in the colorant ink, and preferably has a first dissociation constant of 3.5 or less, preferably in the range of 1.5 to 3.5.

In addition, by using an organic acid, it is easy to maintain the storage stability of the permeation-suppressing ink, and blocking hardly occurs after the permeation-suppressing ink is applied and dried. Preferred organic acids from the above viewpoint are formic acid, acetic acid, propionic acid, isobutyric acid, oxalic acid, fumaric acid, malic acid, citric acid, malonic acid, succinic acid, maleic acid, benzoic acid, and 2-pyrrolidone-5-carboxylic acid. , lactic acid, acrylic acid and its derivatives, methacrylic acid and its derivatives, or acrylamide and its derivatives, compounds having a carboxy group, sulfonic acid derivatives, or phosphoric acid and its derivatives.

The content of the organic acid in the permeation-suppressing ink may be any amount that adjusts the pH of the permeation-suppressing ink to be less than the first dissociation constant of the organic acid. Bleeding during high-speed printing can be effectively suppressed by adding an organic acid to the permeation-suppressing ink in such an amount that the pH of the permeation-suppressing ink is less than the first dissociation constant of the organic acid.

Examples of the polyvalent metal salts include water-soluble salts such as calcium, magnesium, aluminum and zinc salts. Compounds that form salts with polyvalent metals include hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, nitric acid, phosphoric acid, thiocyanic acid, acetic acid, oxalic acid, lactic acid, fumaric acid, fumaric acid, citric acid, and salicylic acid. , organic carboxylic acids such as benzoic acid, and organic sulfonic acids.

The flocculant is preferably contained in a range of 5% by mass or less with respect to the total amount of the penetration suppressing ink, and is contained in a range of 1 to 4% by mass. can be agglomerated to

The content of the aggregating agent in the permeation-suppressing ink can be measured by a known method. For example, the content can be measured by ICP emission spectrometry when the flocculant is a polyvalent metal salt, and by high performance liquid chromatography (HPLC) when the flocculant is an acid.

[Water, organic solvent and surfactant]
The water contained in the permeation suppression ink according to the present invention is not particularly limited, and may be ion-exchanged water, distilled water, or pure water. Although the water content in the permeation-suppressing ink is not particularly limited, it is preferably in the range of 45 to 80% by mass.

In addition to water, an organic solvent can be contained as a solvent for the permeation suppression ink according to the present invention. A water-soluble organic solvent can be suitably used as the organic solvent. Examples of water-soluble organic solvents include alcohols, polyhydric alcohols, amines, amides, glycol ethers, and 1,2-alkanediols having 4 or more carbon atoms.

Alcohols include, for example, methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-1-propanol, t-butanol, 3-methoxy-1-butanol, 3-methoxy -3-methylbutanol, 1-octanol, 2-octanol, n-nonyl alcohol, tridecyl alcohol, n-undecyl alcohol, stearyl alcohol, oleyl alcohol, benzyl alcohol and the like.

Examples of polyhydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol having 5 or more ethylene oxide groups, propylene glycol, dipropylene glycol, tripropylene glycol, and the number of propylene oxide groups. is 4 or more, polypropylene glycol, butylene glycol, hexanediol, pentanediol, glycerin, hexanetriol, thiodiglycol, and the like.

Examples of amines include ethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, morpholine, N-ethylmorpholine, ethylenediamine, diethylenediamine, triethylenetetramine, tetraethylenepentamine, polyethyleneimine, pentamethyldiethylenetriamine, tetramethylpropylenediamine, and the like.

Examples of amides include formamide, N,N-dimethylformamide, N,N-dimethylacetamide and the like.

Examples of glycol ethers include ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, propylene glycol monopropyl ether, dipropylene glycol monomethyl ether, and tripropylene glycol monomethyl. ether and the like.

Examples of 1,2-alkanediols having 4 or more carbon atoms include 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, and 1,2-heptanediol. .

The permeation-suppressing ink can contain one or a combination of two or more selected from these organic solvents. Although the content of the organic solvent in the permeation-suppressing ink is not particularly limited, it is preferably in the range of 10 to 50% by mass.

The permeation-suppressing ink according to the present invention may contain a surfactant for the purpose of improving ejection stability from nozzles, drying properties after application to a fabric, etc., when applied by an inkjet method. The surfactant can be used without any particular limitation, but when a cationic compound is contained as a component of the permeation-suppressing ink, the ionic nature of the surfactant is preferably cationic, nonionic, or betaine type. Specific examples of surfactants include the surfactants described below for penetrants. Note that even when the permeation suppressing ink contains a surfactant (penetrant), it functions to suppress the permeation of the color ink by the action of an aggregating agent or the like.

The content of the surfactant in the permeation-suppressing ink is not particularly limited, but is preferably within the range of 0.05 to 3% by mass.

The permeation-suppressing ink can appropriately contain other components such as a cross-linking agent, an antifungal agent, and a bactericide within a range that does not impair the effects of the present invention.

Furthermore, for example, the UV absorber described in JP-A-57-74193, JP-A-57-87988 and JP-A-62-261476, JP-A-57-74192, JP-A-57-87989, JP-A-60 -72785, JP-A-61-146591, JP-A-1-95091 and JP-A-3-13376 anti-fading agents, various anionic, cationic or nonionic surfactants, JP-A-59 No. -42993, No. 59-52689, No. 62-280069, No. 61-242871 and JP-A-4-219266, fluorescent whitening agents, defoaming agents, lubricants such as diethylene glycol Various known additives such as agents, preservatives, thickeners, antistatic agents, etc. can also be contained.

《Penetration promoting ink》
The penetration promoting ink is applied to the fabric by, for example, an inkjet method. When the permeation promoting ink is applied by an inkjet method, the viscosity is adjusted to the same level as that of the permeation suppressing ink by adding a solvent to the penetrant. The penetration promoting ink contains, for example, a penetrant, and can further contain water and an organic solvent as basic components.

[Penetrant]
Specific examples of penetrants include compounds having a lactam structure, surfactants, and the like.

Examples of compounds having a lactam structure include 2-pyrrolidone, 2-acetidinone, 2-piperidone, ε-caprolactam, 4-ethyl-2-acetidinone, N-methyl-2-pyrrolidone, and 3-amino-2-piperidone. is mentioned.

Preferred surfactants include fluorine-based or silicone-based surfactants with high ability to reduce static surface tension, anionic surfactants such as dioctyl sulfosuccinate with high ability to reduce dynamic surface tension, relatively Nonionic surfactants such as low-molecular-weight polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, acetylene glycols, pluronic surfactants (Pluronic is a registered trademark), sorbitan derivatives and the like are preferably used. It is also preferable to use a fluorine-based or silicone-based surfactant in combination with a surfactant having a high dynamic surface tension-reducing ability.

The above silicone-based surfactant is preferably a polyether-modified polysiloxane compound. For example, KF-351A and KF-642 manufactured by Shin-Etsu Chemical Co., Ltd.; Tegowet 260, etc. of

The above-mentioned fluorosurfactant means one in which some or all of the hydrogen atoms in the hydrophobic groups of ordinary surfactants are substituted with fluorine. Among these, those having a perfluoroalkyl group in the molecule are preferred.

Some of the fluorine-based surfactants mentioned above are sold by Minnesota Mining & Manufacturing Co. under the trade name of Megafac F from DIC and Surflon from AGC. Company under the trade name Fluorad FC, Imperial Chemical Industries under the trade name Monflor, and E.I. DuPont Nemerus & Co. under the trade name Zonyls. , and from Farbewerke Hoechst under the trade name Licowet VPF, respectively.

As the surfactant, acetylene glycol-based surfactants and acetylene alcohol-based surfactants are also preferably used.

Acetylene glycol-based surfactants and acetylene alcohol-based surfactants are not particularly limited, but 2,4,7,9-tetramethyl-5-decyne-4,7-diol and 2,4,7,9- Alkylene oxide adduct of tetramethyl-5-decyne-4,7-diol and alkylene oxide addition of 2,4-dimethyl-5-decyne-4-ol and 2,4-dimethyl-5-decyne-4-ol One or more selected from the group consisting of substances is preferable. These include OLFINE 104 series, E series such as OLFINE E1010, OLFINE PD002W002, Surfynol 465, Surfynol 61 (manufactured by Nissin Chemical Industry Co., Ltd.), Pelex SS-H (trade name of Kao Chemical Co., Ltd.), and the like. available as a commodity.

The content of the penetrant in the penetration promoting ink is appropriately adjusted depending on the type of penetrant, taking into consideration the effect of improving the permeability and the viscosity. The content of the compound having a lactam structure is preferably 20% by mass or more, more preferably 25 to 55% by mass, based on the total amount of the penetration promoting ink. The content of the surfactant is preferably 0.1 to 5% by mass, more preferably 0.2 to 3.0% by mass, relative to the total amount of the penetration promoting ink.

When the penetration promoting ink contains a surfactant as a penetrant, the penetration promoting ink may contain a chelating agent or an aromatic compound in order to improve ejection stability when used in an inkjet method. .

Chelating agents include, for example, ethylenediaminetetraacetic acid, N-(2-hydroxyethyl)ethylenediaminetriacetic acid, ethylenediaminesuccinic acid, iminodisulfosuccinic acid, dicarboxymethylglutamic acid, bis(2-aminoethyl)ethyleneglycoltetraacetic acid, bis (2-aminophenyl)ethyleneglycoltetraacetic acid, bis(2-hydroxyethyl)glycine, 1,2-diaminocyclohexanetetraacetic acid, diethylenetriaminepentaacetic acid, iminodiacetic acid, N-(2-hydroxyethyl)iminodiacetic acid, nitrilo Compounds such as triacetic acid, nitrilotrimethyl phosphate, triethylenetetraaminehexaacetic acid, tetrakis(2-pyridylmethyl)ethylenediamine and the like can be mentioned.

The chelating agent may be, for example, phenolic resins, styrene resins, acrylic resins, and epoxy resins having coordinating groups.

Chelating agents may be salts of the above compounds or resins with cations such as metal ions, NH4 ⁺ , ^UO22 +, VO2 ⁺ . Chelating agents may be hydrates of the above compounds, resins, and salts thereof.

The aromatic compound is preferably a compound having a benzene ring or naphthalene ring with a specific substituent, and examples thereof include sulfonic acid aromatic compounds, carboxylic acid aromatic compounds, and phosphoric acid aromatic compounds.

The content of the chelating agent is preferably 0.001 to 0.1% by mass with respect to the total amount of the penetration promoting ink. The content of the aromatic compound is preferably 0.01 to 50% by mass, more preferably 0.1 to 20% by mass, relative to the total amount of the penetration promoting ink.

[Water and organic solvent]
Specific examples of the water and organic solvent in the permeation promoting ink can be the same as in the permeation suppressing ink. The contents of water and the organic solvent are preferably adjusted appropriately according to the type of penetrant so that the viscosity is within the above preferable range.

In addition, the permeation promoting ink can appropriately contain other components similar to those of the permeation suppressing ink within a range that does not impair the effects of the present invention.

(Functional ink drying section)
The textile printing apparatus 100 may have a functional ink drying section between the pretreatment section 10 and the printing section 20 as required. The functional ink drying section dries the functional ink Pr applied by the pretreatment section 10 . The drying means is not particularly limited, and heating with warm air, a hot plate, or a heat roller is preferable. Heat drying is more preferable from the viewpoint of sufficiently removing the solvent component in a short time. The drying temperature is preferably in the range of 100-130°C.

(printing part)
The printing unit 20 is a member that applies the color ink In to the fabric T2 that has been pretreated, that is, to which the functional ink Pr has been applied. As the printing unit 20, specifically, a coloring material ink application device or the like is exemplified. The application of the colored ink In in the printing unit 20 is performed by controlling the application amount, the application position, and the like by the control unit 30 .

The control of the printing unit 20 by the control unit 30 is performed according to the penetration image and the printing image. In particular, the application amount of the coloring material ink In is controlled in (1-2) above according to the penetration image. In order to apply the color ink In corresponding to the penetration image and the printed image, the ink jet method is preferable as the application method for the printing unit 20 .

When the ink jet method is used as the coloring ink application method, the coloring ink application device has a head for ejecting the coloring ink and a carriage on which the head is mounted. The head has, for example, heads that eject four color inks of cyan, magenta, yellow, and black. In this specification, cyan is expressed as "C", magenta as "M", yellow as "Y", and black as "K", respectively.

There are no particular restrictions on the method of ejecting color material inks in each of the CMYK heads that constitute the head, and the head may be either an on-demand method or a continuous method. Examples of on-demand heads include electro-mechanical conversion, including single-cavity, double-cavity, bender, piston, shear-mode and shared-wall, as well as thermal inkjet and bubble jet (" "Bubble Jet" includes electric-heat conversion methods including those of Canon Inc.'s registered trademark) type.

Among the above heads, an on-demand system head is preferable, and a head using a piezoelectric element as an electro-mechanical conversion element used in an electro-mechanical conversion system (also referred to as a "piezo type inkjet head") is preferable. .

The coloring material ink applicator may be of either a scan system or a line system. In the case of the scanning method, the carriage moves the head in the width direction of the pretreated fabric T2 perpendicular to the conveying direction of the pretreated fabric T2 to perform printing. The direction in which the head moves is called the "scanning direction."

On the surface (nozzle surface) facing the surface of the pretreated cloth T2 of each CMYK head, a plurality of nozzles are arranged along the conveying direction perpendicular to the scanning direction. Appropriate pressure is applied to these nozzles to eject the colored ink as fine droplets. The coloring material ink application device is supported by a carriage in a state in which the nozzle surface of the head is separated from the surface of the pretreated fabric T2 by a predetermined distance in a direction perpendicular to the surface (height direction).

The coloring material ink application device further has a carriage driving mechanism that supports the carriage so as to be able to reciprocate in the scanning direction. The carriage drive mechanism includes, for example, a motor and a transmission that serve as power sources, and sensors such as encoders.

When the coloring material ink applying device is of a line type, the coloring material ink applying device has a length equal to or greater than the width of the pretreated fabric T2, and the heads corresponding to the coloring material inks of each color of CMYK are arranged in the conveying direction of the pretreated fabric T2. are arranged in order along the

In the line-type coloring material ink applicator, one head having a width equal to or greater than the pretreated fabric T2 may be used, or a plurality of heads may be combined so as to have a width equal to or larger than the pretreated fabric T2. may Also, a plurality of heads may be arranged side by side so that their nozzles are staggered to increase the resolution of the heads as a whole. Further, a plurality of such coloring material ink application apparatuses may be arranged in parallel along the fabric conveying direction.

In addition, in the textile printing apparatus 100 of FIG. 1, the functional ink applicator and the coloring material ink applicator are provided separately, but they may be provided integrally. In that case, the head for functional ink and the head for color ink may be mounted in that order on the same carriage.

<Color material ink>
The colorant ink used in the textile printing apparatus of the present invention typically contains a colorant, water, and a water-soluble organic solvent. The coloring ink preferably further contains a hydrophobic polymer. The viscosity of the color ink at 25° C. is preferably adjusted within the range of 6 to 20 mPa·s.

When the viscosity of the colored ink is 6 mPa·s or more, the meniscus of the colored ink near the ejection port of the nozzle is less likely to become unstable even when the ink is ejected at a high ejection frequency, thereby suppressing a decrease in ejection stability. can. Nozzle clogging can be suppressed when the viscosity of the coloring material ink is 20 mPa·s or less. From the same point of view, the viscosity of the colorant ink is more preferably in the range of 7 to 15 mPa·s.

The viscosity of the colorant ink can be adjusted by the composition of the colorant ink, for example, the content of the colorant, the content of the hydrophobic polymer, the solvent composition, and the like. From the viewpoint of moderately increasing the viscosity, the content of the coloring material is set at a certain level or more, and the content of a water-soluble organic solvent having a high viscosity, such as a polyhydric alcohol containing trihydric or higher alcohols such as glycerin, is increased. It is preferable to use a certain amount or more, or to make the content of the hydrophobic polymer to be a certain amount or more, and it is more preferable to combine two or more of these.

[Color material]
The coloring material is not particularly limited, and is preferably a pigment or dye, for example. The pigment is not particularly limited, but may be, for example, an organic pigment or an inorganic pigment with the following numbers listed in the Color Index.

Examples of red or magenta pigments include Pigment Red 3, 5, 19, 22, 31, 38, 43, 48:1, 48:2, 48:3, 48:4, 48:5, 49:1, 53 : 1, 57:1, 57:2, 58:4, 63:1, 81, 81:1, 81:2, 81:3, 81:4, 88, 104, 108, 112, 122, 123, 144 , 146, 149, 166, 168, 169, 170, 177, 178, 179, 184, 185, 208, 216, 226, 257, Pigment Violet 3, 19, 23, 29, 30, 37, 50, 88, Pigment Orange 13, 16, 20, 36 are included.

Examples of blue or cyan pigments include Pigment Blue 1, 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 17-1, 22, 27, 28, 29, 36 , 60 are included.

Examples of green pigments include Pigment Green 7, 26, 36, 50. Examples of yellow pigments include Pigment Yellow 1, 3, 12, 13, 14, 17, 34, 35, 37, 55, 74, 81, 83, 93, 94, 95, 97, 108, 109, 110, 137 , 138, 139, 153, 154, 155, 157, 166, 167, 168, 180, 185, 193.

Examples of black pigments include Pigment Black 7, 28, 26.

Commercially available examples of pigments include Chromofine Yellow 2080, 5900, 5930, AF-1300, 2700L, Chromofine Orange 3700L, 6730, Chromofine Scarlet 6750, Chromofine Magenta 6880, 6886, 6891N, 6790, 6887, Chromofine Fine Violet RE, Chromo Fine Red 6820, 6830, Chromo Fine Blue HS-3, 5187, 5108, 5197, 5085N, SR-5020, 5026, 5050, 4920, 4927, 4937, 4824, 4933 GN-EP, 4940, 4973, 5205, 5208, 5214, 5221, 5000P, Chromo Fine Green 2GN, 2GO, 2G-550D, 5310, 5370, 6830, Chromo Fine Black A-1103, Seika Fast Yellow 10GH, A-3, 2035, 2054, 2200, 2270 , 2300, 2400 (B), 2500, 2600, ZAY-260, 2700 (B), 2770, Seika Fast Red 8040, C405 (F), CA120, LR-116, 1531B, 8060R, 1547, ZAW-262, 1537B , GY, 4R-4016, 3820, 3891, ZA-215, Seika Fast Carmin 6B1476T-7, 1483LT, 3840, 3870, Seika Fast Bordeaux 10B-430, Seika Light Rose R40, Seika Light Violet B800, 7805, Seika Fast Maroon 460N, Seika Fast Orange 900, 2900, Seika Light Blue C718, A612, Cyanine Blue 4933M, 4933GN-EP, 4940, 4973 (manufactured by Dainichiseika Kogyo); KET Yellow 401, 402, 403, 404, 405, 406, 416 , 424, KET Orange 501, KET Red 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 336, 337, 338, 346, KET Blue 101, 102, 103, 104, 105, 106 , 111, 118, 124, KET Green 201 (manufactured by Dainippon Ink and Chemicals); Colortex Yellow 301, 314, 315, 316, P-624, 314, U10GN, U3GN, UNN, UA-414, U263, Finecol Yel low T-13, T-05, Pigment Yellow 1705, Colortex Orange 202, Colortex Red 101, 103, 115, 116, D3B, P-625, 102, H-1024, 105C, UFN, UCN, UBN, U3BN, URN, UGN, ＵＧ２７６、Ｕ４５６、Ｕ４５７、１０５Ｃ、ＵＳＮ、Ｃｏｌｏｒｔｅｘ Ｍａｒｏｏｎ６０１、Ｃｏｌｏｒｔｅｘ ＢｒｏｗｎＢ６１０Ｎ、Ｃｏｌｏｒｔｅｘ Ｖｉｏｌｅｔ６００、Ｐｉｇｍｅｎｔ Ｒｅｄ １２２、ＣｏｌｏｒｔｅｘＢｌｕｅ５１６、５１７、５１８、５１９、Ａ８１８、Ｐ－９０８、５１０、Ｃｏｌｏｒｔｅｘ Ｇｒｅｅｎ４０２、４０３、Ｃｏｌｏｒｔｅｘ Ｂｌａｃｋ ７０２、Ｕ９０５（山陽色素製）；Ｌｉｏｎｏｌ Ｙｅｌｌｏｗ１４０５Ｇ、Ｌｉｏｎｏｌ Ｂｌｕｅ ＦＧ７３３０、ＦＧ７３５０、ＦＧ７４００Ｇ、ＦＧ７４０５Ｇ、ＥＳ、ＥＳＰ－Ｓ（東洋インキ製）、Ｔｏｎｅｒ Ｍａｇｅｎｔａ Ｅ０２、Ｐｅｒｍａｎｅｎｔ ＲｕｂｉｎＦ６Ｂ、Ｔｏｎｅｒ Ｙｅｌｌｏｗ ＨＧ、ＰｅｒｍａｎｅｎｔＹｅｌｌｏｗ ＧＧ－０２、Ｈｏｓｔａｐｅａｍ ＢｌｕｅＢ２Ｇ（ヘキストインダストLily); Novoperm P-HG, Hostaperm Pink E, Hostaperm Blue B2G (manufactured by Clariant); carbon black #2600, #2400, #2350, #2200, #1000, #990, #980, #970, #960, #950, #850, MCF88, #750, #650, MA600, MA7, MA8, MA11, MA100, MA100R, MA77, #52, #50, #47, #45, #45L, #40, #33, # 32, #30, #25, #20, #10, #5, #44, CF9 (manufactured by Mitsubishi Chemical).

Dyes are not particularly limited, and examples thereof include disperse dyes, reactive dyes, acid dyes, basic dyes, direct dyes, and the like. An ink containing a disperse dye is called a disperse ink, and an ink containing a reactive dye is also called a reactive ink.

Sublimation dyes are preferred as disperse dyes. Here, the term "sublimable dye" refers to a dye that sublimates when heated.

Examples of disperse dyes include, but are not limited to, C.I. I. Disperse Yellow 3, 4, 5, 7, 9, 13, 23, 24, 30, 33, 34, 42, 44, 49, 50, 51, 54, 56, 58, 60, 63, 64, 66, 68 , 71, 74, 76, 79, 82, 83, 85, 86, 88, 90, 91, 93, 98, 99, 100, 104, 108, 114, 116, 118, 119, 122, 124, 126, 135 , 140, 141, 149, 160, 162, 163, 164, 165, 179, 180, 182, 183, 184, 186, 192, 198, 199, 202, 204, 210, 211, 215, 216, 218, 224 , 227, 231, 232; I. Disperse Orange 1, 3, 5, 7, 11, 13, 17, 20, 21, 25, 29, 30, 31, 32, 33, 37, 38, 42, 43, 44, 45, 46, 47, 48 , 49, 50, 53, 54, 55, 56, 57, 58, 59, 61, 66, 71, 73, 76, 78, 80, 89, 90, 91, 93, 96, 97, 119, 127, 130 , 139, 142; I. disperse thread 1, 4, 5, 7, 11, 12, 13, 15, 17, 27, 43, 44, 50, 52, 53, 54, 55, 56, 58, 59, 60, 65, 72, 73, 74, 75, 76, 78, 81, 82, 86, 88, 90, 91, 92, 93, 96, 103, 105, 106, 107, 108, 110, 111, 113, 117, 118, 121, 122, 126, 127, 128, 131, 132, 134, 135, 137, 143, 145, 146, 151, 152, 153, 154, 157, 159, 164, 167, 169, 177, 179, 181, 183, 184, 185, 188, 189, 190, 191, 192, 200, 201, 202, 203, 205, 206, 207, 210, 221, 224, 225, 227, 229, 239, 240, 257, 258, 277, 278, 279, 281, 288, 298, 302, 303, 310, 311, 312, 320, 324, 328; I. Disperse Violet 1, 4, 8, 23, 26, 27, 28, 31, 33, 35, 36, 38, 40, 43, 46, 48, 50, 51, 52, 56, 57, 59, 61, 63 , 69, 77; I. Disperse Green 9; C.I. I. Disperse Brown 1, 2, 4, 9, 13, 19; C.I. I. Disperse Blue 3, 7, 9, 14, 16, 19, 20, 26, 27, 35, 43, 44, 54, 55, 56, 58, 60, 62, 64, 71, 72, 73, 75, 79 , 81, 82, 83, 87, 91, 93, 94, 95, 96, 102, 106, 108, 112, 113, 115, 118, 120, 122, 125, 128, 130, 139, 141, 142, 143 , 146, 148, 149, 153, 154, 158, 165, 167, 171, 173, 174, 176, 181, 183, 185, 186, 187, 189, 197, 198, 200, 201, 205, 207, 211 , 214, 224, 225, 257, 259, 267, 268, 270, 284, 285, 287, 288, 291, 293, 295, 297, 301, 315, 330, 333, 359, 360; I. Disperse Black 1, 3, 10, 24 can be mentioned.

Examples of acid dyes include, but are not limited to, C.I. I. Acid Yellow 1, 3, 6, 11, 17, 18, 19, 23, 25, 36, 38, 40, 40:1, 42, 44, 49, 59, 59:1, 61, 65, 67, 72, 73, 79, 99, 104, 159, 169, 176, 184, 193, 200, 204, 207, 215, 219, 219: 1, 220, 230, 232, 235, 241, 242, 246; I. Acid Orange 3, 7, 8, 10, 19, 22, 24, 33, 51, 51S, 56, 67, 74, 80, 86, 87, 88, 89, 94, 95, 107, 108, 116, 122, 127, 140, 142, 144, 149, 152, 156, 162, 166, 168, C.I. I. acid red 1, 6, 8, 9, 13, 18, 27, 35, 37, 52, 54, 57, 60, 73, 82, 88, 97, 97: 1, 106, 111, 114, 118, 119, 127, 131, 138, 143, 145, 151, 183, 195, 198, 211, 215, 217, 225, 226, 249, 251, 254, 256, 257, 260, 261, 265, 266, 274, 276, 277, 289, 296, 299, 315, 318, 336, 337, 357, 359, 361, 362, 364, 366, 399, 407, 415; I. Acid Violet 17, 19, 21, 42, 43, 47, 48, 49, 54, 66, 78, 90, 97, 102, 109, 126; C.I. I. Acid Blue 1, 7, 9, 15, 23, 25, 40, 61:1, 62, 72, 74, 80, 83, 90, 92, 103, 104, 112, 113, 114, 120, 127, 127: 1, 128, 129, 138, 140, 142, 156, 158, 171, 182, 185, 193, 199, 201, 203, 204, 205, 207, 209, 220, 221, 224, 225, 229, 230, 239, 258, 260, 264, 277: 1, 278, 279, 280, 284, 290, 296, 298, 300, 317, 324, 333, 335, 338, 342, 350; I. Acid Green 9, 12, 16, 19, 20, 25, 27, 28, 40, 43, 56, 73, 81, 84, 104, 108, 109; C.I. I. Acid Brown 2, 4, 13, 14, 19, 28, 44, 123, 224, 226, 227, 248, 282, 283, 289, 294, 297, 298, 301, 355, 357, 413; C.I. I. Acid Black 1, 2, 3, 24, 24:1, 26, 31, 50, 52, 52:1, 58, 60, 63, 63S, 107, 109, 112, 119, 132, 140, 155, 172, 187, 188, 194, 207, 222 and the like.

Examples of basic dyes include, but are not limited to, C.I. I. Basic Yellow 1, 2, 13, 19, 21, 25, 32, 36, 40, 51; C.I. I. Basic Red 1, 5, 12, 19, 22, 29, 37, 39, 92; C.I. I. Basic Blue 1, 3, 9, 11, 16, 17, 24, 28, 41, 45, 54, 65, 66; C.I. I. Basic Black 2, 8 and the like.

Direct dyes include, but are not limited to, C.I. I. Direct Yellow 8, 9, 10, 11, 12, 22, 27, 28, 39, 44, 50, 58, 86, 87, 98, 105, 106, 130, 137, 142, 147, 153; C.I. I. Direct Orange 6, 26, 27, 34, 39, 40, 46, 102, 105, 107, 118; C.I. I. Direct Red 2, 4, 9, 23, 24, 31, 54, 62, 69, 79, 80, 81, 83, 84, 89, 95, 212, 224, 225, 226, 227, 239, 242, 243, 254; C.I. I. direct violet 9, 35, 51, 66, 94, 95; C.I. I. Direct Blue 1, 15, 71, 76, 77, 78, 80, 86, 87, 90, 98, 106, 108, 160, 168, 189, 192, 193, 199, 200, 201, 202, 203, 218, 225, 229, 237, 244, 248, 251, 270, 273, 274, 290, 291; I. Direct Green 26, 28, 59, 80, 85; C.I. I. Direct Brown 44, 44:1, 106, 115, 195, 209, 210, 212:1, 222, 223, C.I. I. Direct Black 17, 19, 22, 32, 51, 62, 108, 112, 113, 117, 118, 132, 146, 154, 159, 169 and the like.

Examples of reactive dyes include, but are not limited to, C.I. I. Reactive Yellow 2, 3, 7, 15, 17, 18, 22, 23, 24, 25, 27, 37, 39, 42, 57, 69, 76, 81, 84, 85, 86, 87, 92, 95 , 102, 105, 111, 125, 135, 136, 137, 142, 143, 145, 151, 160, 161, 165, 167, 168, 175, 176; I. Reactive Orange 1, 4, 5, 7, 11, 12, 13, 15, 16, 20, 30, 35, 56, 64, 67, 69, 70, 72, 74, 82, 84, 86, 87, 91 , 92, 93, 95, 99, 107; I. Reactive Red 2, 3, 3: 1, 5, 8, 11, 21, 22, 23, 24, 28, 29, 31, 33, 35, 43, 45, 49, 55, 56, 58, 65, 66 , 78, 83, 84, 106, 111, 112, 113, 114, 116, 120, 123, 124, 128, 130, 136, 141, 147, 158, 159, 171, 174, 180, 183, 184, 187 , 190, 193, 194, 195, 198, 218, 220, 222, 223, 226, 228, 235, 245; I. reactive violet 1, 2, 4, 5, 6, 22, 23, 33, 36, 38; C.I. I. Reactive Blue 2, 3, 4, 7, 13, 14, 15, 19, 21, 25, 27, 28, 29, 38, 39, 41, 49, 50, 52, 63, 69, 71, 72, 77 , 79, 89, 104, 109, 112, 113, 114, 116, 119, 120, 122, 137, 140, 143, 147, 160, 161, 162, 163, 168, 171, 176, 182, 184, 191 , 194, 195, 198, 203, 204, 207, 209, 211, 214, 220, 221, 222, 231, 235, 236; I. Reactive Green 8, 12, 15, 19, 21; C.I. I. Reactive Brown 2, 7, 9, 10, 11, 17, 18, 19, 21, 23, 31, 37, 43, 46; C.I. I. Reactive Black 5, 8, 13, 14, 31, 34, 39 and the like.

The dyes described above may be used singly or in combination of two or more.

Among these, pigments are preferable because they have good dispersibility in the constituent components of the color ink and have excellent weather resistance.

The content of the coloring material is not particularly limited, but from the viewpoint of easily adjusting the viscosity of the coloring material ink within the above range and forming a high-density image, it is 4 to 15% by mass based on the coloring material ink. is preferably within the range of
When the content of the coloring material is 4% by mass or more, not only can the viscosity of the coloring material ink be increased appropriately, but also a high-density image can be easily formed. When the content of the coloring material is 15% by mass or less, the viscosity of the coloring material ink does not become too high, so nozzle clogging is less likely to occur. From the same point of view, the content of the colorant is more preferably in the range of 5 to 15% by mass, more preferably in the range of 6.5 to 12% by mass relative to the colorant ink.

[Hydrophobic polymer]
The hydrophobic polymer is a water-dispersible polymer, and may be a polymer dispersant, a water-dispersible resin (binder resin), or the like.

The type of polymer dispersant is not particularly limited, but examples include styrene, styrene derivatives, vinylnaphthalene derivatives, acrylic acid, acrylic acid derivatives, maleic acid, maleic acid derivatives, itaconic acid, itaconic acid derivatives, fumaric acid , block copolymers consisting of two or more monomers selected from fumaric acid derivatives, random copolymers and salts thereof, polyoxyalkylenes, polyoxyalkylene alkyl ethers, and the like.

When the polymeric dispersant has an acidic group such as a carboxyl group, the acidic group is preferably neutralized with a neutralizing base. Examples of neutralizing bases include organic bases such as ammonia, monoethanolamine, diethanolamine, triethanolamine, morpholine and the like.

Examples of water-dispersible resins include urethane-based resins, butadiene-based resins, acrylic-based resins, polystyrene, and the like. Examples of butadiene-based resins include styrene-butadiene copolymers and acrylonitrile-butadiene copolymers. Examples of acrylic resins include acrylic acid ester copolymers, styrene-acrylic copolymers, silicone-acrylic copolymers, and acrylic-modified fluororesins. Among them, urethane-based resins and styrene-acrylic copolymers are preferred.

Examples of styrene-acrylic copolymers include styrene-(meth)acrylic acid copolymers and styrene-(meth)acrylic acid-(meth)acrylic acid ester copolymers. Examples of (meth)acrylates include benzyl (meth)acrylate, cyclohexyl (meth)acrylate, methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, hexyl (meth)acrylate, ) acrylate, octyl (meth) acrylate, lauryl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylhexyl carbitol (meth) acrylate, phenol EO-modified (meth) acrylate, isobornyl (meth) acrylate, dicyclopentenyl (meth)acrylate, dicyclopentanyl (meth)acrylate, dicyclopentenyloxyethyl (meth)acrylate.

A urethane resin is a polymer obtained by reacting a polyol with a polyisocyanate. Examples of polyols include polypropylene glycol, polyethylene glycol, polytetramethylene glycol, poly(ethylene adipate), poly(diethylene adipate), poly(propylene adipate), poly(tetramethylene adipate), poly(hexamethylene adipate), poly - ε-caprolactone, poly(hexamethylene carbonate), silicone polyols. Examples of isocyanates include tolylene diisocyanate, 4,4-diphenylmethane diisocyanate, xylylene diisocyanate, naphthalene diisocyanate, hexamethylene diisocyanate, hydrogenated tolylene diisocyanate, hydrogenated 4,4-diphenylmethane diisocyanate, isophorone diisocyanate, tetramethylxyl Contains diisocyanates.

The glass transition point Tg of the water-dispersible resin is not particularly limited, but may be in the range of -30 to 100°C, preferably -10 to 50°C, more preferably 20 to 40°C.

Although the acid value of the water-dispersible resin is not particularly limited, it is preferably 44 mgKOH/g or more, more preferably 60 mgKOH/g or more, from the viewpoint of enhancing dispersion stability. The upper limit of acid value can be, for example, 110 mgKOH/g. The acid value can be measured according to JIS K0070.

Although the average particle size of the water-dispersible resin is not particularly limited, it is preferably 300 nm or less, more preferably 130 nm or less, from the viewpoint of preventing head nozzle clogging. The average particle size of the water-dispersible resin can be measured by laser diffraction scattering particle size distribution measurement.

The content of the hydrophobic polymer is appropriately set according to its type. For example, when the hydrophobic polymer is a polymer dispersant, the content of the polymer dispersant is, for example, 4% by mass or less, preferably in the range of 0.8 to 2% by mass, relative to the colorant ink. is preferred. When the polymer dispersant is 0.8% by mass or more, the dispersibility of solid colorants such as pigments can be sufficiently improved, and when it is 4% by mass or less, an excessive increase in viscosity can be easily suppressed.

When the hydrophobic polymer is a water-dispersible resin (binder resin), the content of the water-dispersible resin (binder resin) is It is preferably 1 to 15% by mass with respect to the material ink. When the content of the water-dispersible resin is 1% by mass or more, the viscosity of the colorant ink can be easily increased to an appropriate level. It is also easy to increase the abrasion resistance. When the content of the water-dispersible resin is 15% by mass or less, the viscosity of the colorant ink does not become too high, so nozzle clogging is less likely to occur. From the same viewpoint, the content of the water-dispersible resin is more preferably 2 to 10% by mass relative to the color ink.

When the hydrophobic polymer contains both a polymer dispersant and a water-dispersible resin, the total amount of the hydrophobic polymer is It is preferably 1 to 20% by mass, preferably 2 to 15% by mass.

[Water-soluble organic solvent]
Examples of the water-soluble organic solvent include compounds similar to the water-soluble organic solvent in the functional ink. Above all, the water-soluble organic solvent preferably contains a polyhydric alcohol from the viewpoint of facilitating an appropriate increase in the viscosity of the colorant ink. The polyhydric alcohol preferably contains a trihydric or higher alcohol, and more preferably contains glycerin, from the viewpoint of making it easier to increase the viscosity of the colorant ink.

It is preferable that the content of the polyhydric alcohol is moderately large. Specifically, it is preferable that the content of the polyhydric alcohol is in the range of 25 to 50% by mass with respect to the color ink. When the content of the polyhydric alcohol is above a certain level, the viscosity of the coloring ink tends to be increased, and when the content is below a certain level, nozzle clogging due to excessive viscosity of the coloring ink is easily suppressed. From the same point of view, it is more preferable that the content of the polyhydric alcohol is in the range of 30 to 45% by mass with respect to the color ink.

[Other ingredients]
The colorant ink may further contain other components as needed. Examples of other ingredients include solvents, surfactants, preservatives, anti-mold agents, anti-rust agents, pH adjusters and the like.

A surfactant has the function of controlling the surface tension of the colorant ink. When an anionic compound is contained in the component of the colorant ink, the ionicity of the surfactant is preferably of the anionic, nonionic or betaine type. As the surfactant, the same surfactant as the surfactant explained in the functional ink can be exemplified.

Examples of antiseptics or antifungal agents include aromatic halogen compounds (eg, PreventolCMK), methylenedithiocyanate, halogen-containing nitrogen-sulfur compounds, 1,2-benzisothiazolin-3-ones (eg, PROXELGXL), and the like. be

Examples of pH adjusters include urea, sodium hydroxide, and the like.

(control part)
The control unit 30 controls the preprocessing unit 10 and the printing unit 20 as described in (1-1) and (1-2) above, respectively, according to the penetrance image. The penetrance image may be generated within the control unit 30 or may be an externally user-defined penetrance image.

The control unit 30 is mounted on a computer and configured by a processor such as a CPU (Central Processing Unit). The computer on which the control unit 30 is installed further includes a storage unit configured by a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The storage unit stores various programs and the like for operating each unit of the textile printing apparatus 100 . The control unit 30 develops various programs stored in a ROM or the like in a work area of a RAM, for example, and executes the programs in the control unit 30, whereby each unit of the textile printing apparatus 100 is centrally controlled. .

Principal parts of the control system of the textile printing apparatus 100 shown in FIG. 1 will be described below with reference to the block diagram shown in FIG. FIG. 2 shows the case where the penetrance image is formed within the control unit 30 of the textile printing apparatus 100 .

In FIG. 2, the control unit 30 is installed in the control device (computer) 106 together with the storage unit 50 and the information acquisition unit 40 . The control unit 30 includes a preprocessing control unit 31, a printing control unit 32, a penetration image forming unit 33, and the like. In addition to these, the control unit 30 has a control unit that controls the cloth feeding unit 101, the conveying unit 103, the drying unit 105, and the cloth recovery unit 102, but the description is omitted in FIG.

In the control device 106, the various data acquired by the information acquisition unit 40 from the external device are used to perform calculations according to the programs stored in the ROM of the storage unit 50. Based on the results, the control unit 30 controls the printing apparatus 100 is controlled. In the preprocessing control unit 31 and the printing control unit 32, based on the penetrance image formed in the penetrance image forming unit 33, the functional ink coating device 11 of the preprocessing unit 10 and the color material of the printing unit 20 are selected. Control of the ink coating device 21 is performed.

In the block diagram of FIG. 2, a printed image 41, fabric state information 42, and temperature/humidity 43 are shown as data acquired by the information acquisition unit 40 from an external device. Of these, the printed image 41 is essential data. The fabric mode information 42 and the temperature/humidity 43 are arbitrary data, and the information acquisition unit 40 can also acquire various other data.

The penetrance image is formed in the penetrance image forming section 33 by performing calculations based on the printed image 41 by a program stored in the storage section 50 . The program is preferably, for example, a program in which calculations are set so that the penetration of the penetration image increases as the color density of the printed image 41 increases.

As the color density of the printed image 41, for example, L ^* in the CIE1976 L ^* a ^* b ^* color space can be used. L ^* represents the lightness of the color, and the smaller the value, the higher the color density. Therefore, the relationship between the value of L ^* and the degree of penetration is a linear polynomial relationship with a negative proportional coefficient. When forming a permeability image using L ^* as an index, for example, the value of L ^* measured in units of pixels is inserted into the first-order polynomial to obtain the permeability in units of pixels to create a permeability image.

Further, it is preferable that the penetration image is, for example, an image targeting a non-edge portion excluding an edge portion having a predetermined width from the printed image 41 . In this case, the control section 30 has, for example, a contour detection section that detects the contour of the printed image 41 . When the printed image 41 is subjected to halftone processing and the arrangement of pixels to which the colored ink In is applied, the outline of the printed image 41 is determined in various ways with respect to the printed image 41 before halftone processing. A method (Sobel method, Laplacian of Gaussian method, Canny method, etc.) can be used to detect a boundary having a large difference in image density.

The edge portion of the printed image is an area having a predetermined width inside from the contour of the printed image. The predetermined width is, for example, 0.05 to 10 mm, preferably 0.2 to 1 mm. A non-edge portion is an area of the printed image excluding the edge portion. In order to apply the functional ink only to the non-edge portions of the printed image, a penetration image corresponding to the non-edge portions of the printed image is formed. The method of forming the penetrance image can be performed in the same manner as described above.

When a user-defined penetrance image is used, user-defined penetrance image data input from an external device is transmitted to the penetrance image forming unit 33 in the block diagram of FIG.

In the textile printing apparatus 100, the pretreatment control unit 31 controls (1-1) the permeability adjustment processing in the pretreatment unit 10 so that the permeability increases as the degree of permeability increases. Therefore, in the control device 106, for example, based on the penetrance image obtained as described above, the application amount of the functional ink Pr corresponding to the penetrance of each pixel is obtained by the program in the storage unit 50, A functional ink application image indicating the application position and application amount of the functional ink Pr is formed. Then, based on the functional ink application image, the preprocessing control unit 31 operates to cause the preprocessing unit 10 to apply the functional ink Pr.

As the functional ink Pr, for example, a permeation suppressing ink or a permeation promoting ink is used depending on the type of fabric. The coating amount of the functional ink Pr can be approximately in the range of 0 to 100 g/m ² , preferably in the range of 0 to 30 g/m ² , for both the penetration suppressing ink and the penetration promoting ink. In addition, the ratio of the coating amount of the coloring material ink In to the coating amount of the functional ink Pr can be 0 to 1000% by mass, and 0 to 200% in both the case of the penetration suppressing ink and the penetration promoting ink. Weight percent ranges are preferred.

Further, in the printing apparatus 100, the printing control unit 32 (1-2) controls the application amount of the color ink in the printing unit 20 to increase as the penetration degree increases. Therefore, in the control device 106, for example, based on the penetrance image and the printed image 41 obtained as described above, the application amount of the coloring material ink In for each pixel is obtained by the program in the storage unit 50, A coloring material ink application image is formed that indicates the application position and application amount of the coloring material ink In. Then, based on the colored ink application image, the printing control unit 32 operates to cause the printing unit 20 to apply the colored ink In.

The textile printing apparatus 100 has, for example, an image processing unit in the control device 106, and has a function of separating the printed image 41 into four color images of C, M, Y, and K to perform color separation processing. . The application position and application amount of the colorant ink In of each color are determined in units of pixels based on the C image, M image, Y image, and K image generated by the color separation process and the penetration image obtained as described above. is required. Note that, for example, if a coloring material ink applied image obtained from a C image and a penetration image is a cyan ink applied image, the ink applied amount of the cyan ink applied image is larger than the ink applied amount of the C image in a certain pixel. The amount can be 0.5 to 3 times depending on the degree of penetration in the degree image. The same applies to the application amount of the coloring material ink of other colors.

The coating amount of the colorant ink Pr can be, for example, the total amount of the four colors of C, M, Y, and K, and can be in the range of approximately 0 to 150 g/m ² , and in the range of 0 to 50 g/m ² . is preferred. It should be noted that the application amount of the coloring material ink being 0 g/m ² corresponds to a region of the same color as the fabric in the printed image, for example, a white region when the fabric is white.

The penetrance image described above is, for example, a penetrance image under a reference environment on a reference cloth. Therefore, in the formation of the permeability image, it is preferable to add the factor of the fabric mode information 42 or the temperature/humidity 43 . In FIG. 2, temperature/humidity indicates environmental temperature and environmental relative humidity.

The information on the mode of the fabric includes the type of fibers that make up the fabric, the thickness of the fabric, the fiber density of the fabric, the ratio of chemical fibers in the fibers that make up the fabric, the weaving method of the fabric, the thickness of the fibers that make up the fabric, and the like. mentioned.

As for the thickness of the fabric, the range of approximately 0.1 to 2.0 mm is applicable to the present invention, and the range of 0.1 to 1.0 mm is preferable in that the effects of the present invention can be remarkably exhibited. The fiber density of the fabric is generally applicable to the present invention in the range of 10 to 1000 g/m ² , and preferably in the range of 50 to 300 g/m ² from the viewpoint that the effects of the present invention can be remarkably exhibited.

The types of fibers that make up the fabric include natural fibers (hydrophilic fibers) such as cotton, hemp, wool, or silk, and chemical fibers such as rayon, vinylon, nylon, acrylic, polyurethane, polyester, and acetate.

From the viewpoint of permeability, there is a preferable combination of the fibers constituting the fabric and the coloring ink. Such combinations include, for example, reactive dye-containing coloring ink and cellulose-based fibers (cotton, hemp, rayon, etc.), acid dye-containing coloring ink and silk, wool, nylon fibers, Examples include basic dyes and acrylic fibers, color inks containing direct dyes, color inks containing cotton, hemp, rayon, disperse dyes, and polyester fibers. Among these, a coloring material ink containing a reactive dye and fibers mainly composed of cellulose, and a coloring material ink containing an acid dye and silk, wool or nylon fibers are preferable. However, the combination of the fibers constituting the fabric and the colorant ink is not limited to this.

Yarns used for fabric production are not limited to pure yarns, and may be blended yarns or cross-twisted yarns. For a fabric in which the warp and the weft are the same type of fiber, it is sufficient to specify the fiber type information of either the warp or the weft. For a fabric using different types of fibers for the warp and weft, such as a mixed weave fabric, it is preferable to specify the type information for each of the warp and weft.

The unit of fiber thickness may be count, tex, denier, or the like. The fiber thickness is generally applicable to the present invention in the range of 10 to 100 denier.

There are woven fabrics, non-woven fabrics, knitted fabrics, etc. as weaving methods of fabrics, and types of weaving methods in woven fabrics include plain weave, twill weave, satin weave, etc. depending on the combination of warp and weft. The fabric may be a blended woven fabric or a blended nonwoven fabric of two or more types of fibers.

The chemical fiber ratio in the fibers constituting the fabric is indicated as mass % of the chemical fiber contained with respect to the total amount of the fabric.

Regarding the mode information of the fabric, the greater the thickness of the fabric and the higher the fiber density of the fabric, the higher the degree of permeation is set. Also, the higher the ratio of chemical fibers in the fibers constituting the fabric and the thicker the fibers, the lower the degree of permeation is set.

Regarding temperature and humidity, the higher the ambient temperature, the lower the penetration level. The higher the environmental relative humidity, the lower the penetration level is set.

(dry section)
The drying section 105 dries the color ink In applied by the printing section 20 . The drying means is not particularly limited, and heating with warm air, a hot plate, or a heat roller is preferable. Heat drying is more preferable from the viewpoint of sufficiently removing the solvent component in a short time. The drying temperature is preferably in the range of 100-130°C.

(fixing unit)
The textile printing apparatus 100 may have a fixing section downstream of the drying section 105 in the conveying direction, if necessary. The fixing unit is a member that, after removing the volatile components in the colorant ink In in the drying unit 105, fixes the remainder (the solid content of the colorant ink In) to the fabric by further heating or the like. By passing through the drying section 105 and an optional fixing section, the color ink can develop a desired hue. Examples of the heating means in the fixing section include heating means by a normal pressure steam method, a high pressure steam method, a thermofix method, and the like. Note that the drying section 105 can also serve as the fixing section.

(Fabric collection department)
The fabric recovery section 102 is provided downstream of the drying section 105 and recovers the printed fabric 3 from which the color ink In has been dried in the drying section 105 while winding it. Alternatively, the fabric recovery section 102 in the case of the configuration in which the fabrics separated one by one are conveyed may be a fabric discharge section for discharging the printed fabric T3.

[Printing method]
The textile printing method of the present invention has a pretreatment process, a printing process, and a control process, and each process is executed as follows.

In the pretreatment process, a process for adjusting the permeability of the color ink to the fabric is performed.
In the printing process, an image is printed by applying colored ink to the fabric.
The control process controls the pretreatment process and the printing process according to the penetrance image, respectively, as described in (2-1) and (2-2) below.

(2-1) The permeability adjusting treatment in the pretreatment step is controlled so that the higher the permeability, the higher the permeability.
(2-2) Control the application amount of the color ink in the printing process so that the higher the penetration, the greater the amount.

As an embodiment of the textile printing method of the present invention, from the viewpoint of exhibiting the effect of the present invention, the pretreatment step is performed by applying a functional ink containing a penetration inhibitor or a penetration accelerator to the fabric by an inkjet method. Preferably, the control step controls the application amount and application position of the functional ink according to the penetration image.

As an embodiment of the textile printing method of the present invention, it is preferable that the control step adjusts the penetration image according to the state information of the fabric. In the aspect using the functional ink, the application amount of the functional ink and the application amount of the coloring material ink are changed accordingly. The mode information of the fabric is selected from the type of fibers that make up the fabric, the thickness of the fabric, the fiber density of the fabric, the ratio of chemical fibers in the fibers that make up the fabric, the weaving method of the fabric, and the thickness of the fibers that make up the fabric. It is preferable that it is at least one kind.

Moreover, it is preferable that the control step adjusts the permeability image according to the environmental temperature and the environmental relative humidity. In the aspect using the functional ink, the application amount of the functional ink and the application amount of the coloring material ink are changed accordingly.

As an embodiment of the printing method of the present invention, from the viewpoint of exhibiting the effect of the present invention, the penetration image is arranged such that the penetration becomes higher as the color density of the image printed by the printing portion increases. It is preferably a set image.

As an embodiment of the textile printing method of the present invention, from the viewpoint of exhibiting the effect of the present invention, the penetration image is a non-edge portion of the image printed by the printing portion, excluding an edge portion having a predetermined width. It is preferable that the image is

As an embodiment of the textile printing method of the present invention, it is preferable to use a penetrance image defined by a user as the penetrance image from the viewpoint of exhibiting the effects of the present invention.

The textile printing method of the present invention may further include other processes in addition to the pretreatment process, the printing process, and the control process. Other processes include, for example, a functional ink drying process that is provided between the pretreatment process and the printing process to dry the functional ink applied to the fabric in the pretreatment process, and a functional ink drying process that is provided after the printing process. Examples include a drying process for drying the colored ink applied to the fabric in the printing process, and a fixing process provided after the drying process for fixing the colored ink to the fabric.

The textile printing method of the present invention can be performed using, for example, the textile printing apparatus of the present invention. The details of each step in the present invention are as described in the operation of each component in the textile printing apparatus of the present invention described above.

100 Textile printing device 10 Pretreatment unit 20 Printing unit 30 Control unit 101 Cloth feeding unit 102 Cloth collecting unit 103 Conveying unit 105 Drying unit

Claims (9)

A textile printing apparatus comprising a fabric pretreatment unit, a printing unit for applying colored ink to the fabric to print an image, and a control unit,
The pretreatment unit performs a treatment for adjusting the permeability of the color ink to the fabric,
The control unit performs the permeability adjustment processing in the preprocessing unit according to a penetration degree image representing a distribution of the degree of penetration of the colored ink onto the fabric, which is required in the image printed by the printing unit. A printing apparatus, wherein control is performed so that the permeability increases as the penetration degree increases, and the application amount of the coloring material ink in the printing portion is controlled so as to increase as the penetration degree increases. . The pretreatment unit has a mechanism for applying a functional ink containing a permeation inhibitor or a permeation enhancer to the fabric by an inkjet method, and the control unit applies the amount of the functional ink according to the degree of penetration image. 2. The textile printing apparatus according to claim 1, wherein the printing apparatus controls the application position and the application position. 3. The textile printing apparatus according to claim 1, wherein the control unit adjusts the penetration image in accordance with information on the state of the fabric. The mode information of the fabric is selected from the type of fibers that make up the fabric, the thickness of the fabric, the fiber density of the fabric, the ratio of chemical fibers in the fibers that make up the fabric, the weaving method of the fabric, and the thickness of the fibers that make up the fabric. 4. The textile printing apparatus according to claim 3, wherein at least one of 5. The textile printing apparatus according to any one of claims 1 to 4, wherein the control unit adjusts the penetration image according to environmental temperature and environmental relative humidity. 6. A method according to any one of claims 1 to 5, wherein said penetration image is an image set so that said penetration increases according to the height of the color density of the image printed by said printing unit. A printing apparatus according to any one of claims 1 to 3. 7. An image according to any one of claims 1 to 6, wherein said penetration image is an image for a non-edge portion excluding an edge portion having a predetermined width from the image printed by said printing portion. or the printing apparatus according to item 1. 6. The textile printing apparatus according to any one of claims 1 to 5, wherein a user-defined penetrance image is used as the penetrance image. A textile printing method comprising a fabric pretreatment process, a printing process of applying colored ink to the fabric to print an image, and a control process,
The pretreatment step performs a treatment for adjusting the permeability of the color ink to the fabric,
The control step performs the permeability adjustment process in the pretreatment step according to a permeability image representing a distribution of the permeability required in the image printed by the printing step of the coloring material ink on the fabric. A printing method, wherein control is performed so that the permeability increases as the penetration degree increases, and the application amount of the coloring material ink in the printing step is controlled so as to increase as the penetration degree increases. .

Images