JP2003313787A - Dry type transfer paper for inkjet textile printing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide transfer paper transcribing images without bleeding and giving original images clearly and in good reproducibility in case when transcribed on a polyester fiber fabric by applying a sublimating dye-printing layer on the transfer paper and heat transcribing it to the polyester fiber fabric. <P>SOLUTION: The dry type transfer paper is applied with an acceptor layer for a sublimating dye-containing ink on one side of the paper. The paper has 3-25 wt.% dye residual ratio on the transcribed surface after heat transcription, when the paper is printed with an inkjet ink containing a magenta sublimating- printing ink having 180-200°C sublimation point at 1440 dpi and heat transcribed to the polyester fiber fabric by pressing the printed surface to the fabric at 190°C for 30 seconds. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dry transfer paper for textile printing for ink jet printers. More specifically, an image is printed on a transfer paper, which is a temporary support, with a sublimable dye ink by an inkjet printer, and the printed image on the transfer paper is transferred to a cloth such as polyester by heating and pressurization. It is a dry transfer paper used for transfer printing, and it is possible to efficiently obtain a uniform product in actual production.
The present invention relates to a dry transfer paper for inkjet printing, which allows an original image such as a photograph adjusted by a computer to be clearly and reproducibly transferred onto a transfer target such as a cloth.

[0002]

2. Description of the Related Art Conventionally, a screen printing method, a roller printing method, a rotary screen printing method or the like has been widely used as a method for printing or printing an image such as a pattern on a textile material such as clothes or cloth. , It is necessary to create a screen frame, engraving roller, etc. every time the pattern is changed, which is advantageous for obtaining a large amount of the same print, but the screen frame and engraving roller are quite expensive. Unless a large amount of the same printed material is created, the cost per unit product will be high, and a small amount of printed material will be short-term.
It had a very big problem to make it at a low price.

In order to solve these drawbacks and problems, an image of a design or the like to be printed by a scanner is read, an image is processed by a computer, and a signal of the processed image or the like is used to form an ink jet method to fabric material such as cloth. A method of directly printing (printing) on a paper or a method of printing once on a transfer paper and transferring the printed image or the like onto a fiber material such as cloth has been put into practical use. In the method of directly printing (printing) on textile materials such as cloth by the inkjet method, the thickness of the fibers of textile materials such as cloth, surface irregularities for texture feeling peculiar to textile materials, fluff, density, etc. Unlike printing, bleeding occurs due to capillarity in a fiber material such as ink cloth, which causes remarkable deterioration in sharpness of images and the like. In order to eliminate this bleeding, many methods have been proposed in which a fiber material such as a cloth is pretreated by applying a chemical or the like. However, this pretreatment is a fibrous material such as a paper which has a flatness like a paper. It has a unique texture, and the print image on the pre-treated textile material is formed on the pre-treatment layer, and the printed dye is fixed on the textile material. It is necessary to fix, and further, after fixing and fixing, it is necessary to remove the pretreatment chemicals and the like to regenerate the fibrous material such as cloth, and there are many steps and it is necessary to use a large amount of chemicals and water.

Further, a method has been proposed in which an ink jet method is used to print once on a transfer paper and transfer the printed image or the like onto a textile material such as cloth. In this transfer method, a pigment / binder layer is transferred onto the transfer paper. Provide a pigment / binder system that transfers this layer onto a textile material such as cloth with heat and pressure,
A heat transferable dye layer is provided on the transfer paper, and this layer is transferred and dye-fixed onto the pretreated fiber material such as cloth with steam or heat to remove the pretreatment agent, and the sublimable dye layer is placed on the transfer paper. There is a dry transfer method in which this layer is transferred to a fiber material such as a polyester fiber cloth or the like which is easily receptive to sublimable dyes by heat or pressure.

In the method (1), the printed image has the pigment and the binder simultaneously provided on the fiber material such as the cloth, and the pretreatment of the fiber material such as the cloth is not required, and the composition of the fiber material such as the cloth is configured. Although it has an advantage not limited to the fiber type, the formed image is formed from a binder and a pigment, and the surface of the fiber is not dyed inside the fibers constituting the fiber material such as cloth, but the surface of the fiber. It is a convex portion that damages the texture of the fabric because it is easy to fall off from the fiber material such as cloth due to physical stress such as rubbing and that it is on the fiber surface. , Has a problem that it has a stiff texture. The method is a wet transfer method in which a dye layer of a heat transferable dye is provided on a transfer paper, and this layer is transferred onto a fiber material such as cloth pretreated with water vapor, chemicals or heat to fix the dye and remove the pretreatment chemicals. However, there are problems such as the necessity of pretreatment, removal of pretreatment chemicals, and complicated dye fixation. The method is a dry transfer method in which a sublimable dye layer is provided on a transfer paper, and this layer is transferred onto a fiber material such as a sublimable dye easily dyeable (accepting) cloth such as polyester fiber cloth by heat or pressure, The constituent fiber species of textiles such as cloth will be limited to fiber materials that are receptive (easy dyeing) to sublimable dyes, but pretreatment of cloth, removal of pretreatment chemicals, complex fixation of dyes, etc. It is a system that has no problems, is significant for diversifying fashion, reducing costs, and shortening manufacturing time.

[0006]

However, this dry transfer method is one in which an image such as a photograph, a picture or a character is printed on a transfer paper by an ink jet method with an ink containing a sublimable dye,
Sublimation dye is a method in which sublimation transfer by heat and pressure is used as the essence on a fiber material such as polyester fiber-containing cloth that is an easily dyeable fiber, but an image without blurring when printing an image etc. on transfer paper In order to obtain the image, etc. on the transfer paper by heat and pressure on the polyester cloth etc., it is necessary that the sublimable dye on the transfer paper is efficiently transferred (the residual ratio of the dye is low). In the case of printing / transferring, at least red, blue, yellow, and black sublimation dyes of different sublimation dyes are required, and the sublimation dyes of those different inks must not have far different dye residual rates. , The sublimable dyes and the ink receiving layer (dry transfer paper for inkjet printing) have a problem in that the affinity must be selected in a well-balanced manner.

[0007] In the conventional dry transfer paper, there is almost nothing satisfying that there is no image bleeding, that the dye residual ratio is low, and that the dye residual ratio of different inks is well balanced and at the same level. In the transfer paper having a low dye remaining rate, image bleeding frequently occurred, and in the transfer paper having a small image bleeding, the dye remaining rate was high. Further, even in the case of the transfer paper having less image bleeding and having a low residual ratio of dye, it is often the case that high temperature and high pressure are required or that the fabric is required to be heated and pressed for a long time. Furthermore, in the printing (printing) of color images using the three primary colors of red, blue, and yellow and at least four colors of black, and the transfer to a fabric, even if a certain hue has a high transfer efficiency (even if the residual dye ratio is low). , That must have good transfer efficiency in all hues and have the same level of transfer efficiency, and even if one of these elements is missing, a clear original image cannot be reproduced on the cloth. Is. When different inks with different sublimation properties (different dye residual ratio) are used to print on transfer paper with an inkjet printer and transfer to fabric, transfer with the same level of dye residual ratio and low dye residual ratio is executed. As a matter of course, it is possible to heat the fabric at a high temperature for a long time, but in most cases, the fabric of polyester or the like cannot withstand the high temperature for a long time and the texture of the fabric is impaired. Also, in order to carry out transfer with the same level of dye residual ratio and low dye residual ratio without impairing the texture of the fabric, it is naturally possible to select all the sublimable dyes having a low sublimation point. However, such a dye having a low sublimation point has a defect in heat resistance, resulting in a poor quality of the obtained printing fabric.

[0008]

According to the present invention, a color printing layer of a sublimable dye is provided on a transfer paper, and the layer is heated and pressed onto a fiber material such as a polyester fiber cloth which is easily receptive to a sublimable dye. In the dry transfer method in which the transfer is performed with the sublimation dye ink on the transfer paper, there is no bleeding with the inkjet printer, and the transfer efficiency is high to some extent in all the colors from the transfer paper to the cloth, and The transfer efficiency of all hues has the same level of transfer efficiency, and an image on which transfer imprinting is performed on a cloth can reproduce the original image. That is, the present invention is a dry transfer paper for inkjet printing in which a receiving layer for an inkjet printer ink containing a sublimable dye is provided on one surface of a flexible support such as paper, and the sublimation point is 180 ° C. on the receiving layer.
From inkjet printer ink containing red (red, magenta) sublimable dye at 1440 dpi
, The printed surface is pressed onto a polyester cloth, and the dye residual ratio on the printed surface of the transfer paper for inkjet printing after the heat transfer treatment at 190 ° C. for 30 seconds is
It is a dry transfer paper for ink-jet printing characterized by being in the range of 3% by weight to 25% by weight, and the variation in the dye residual ratio after the heat transfer treatment in the length direction is 2.0 or less and at least the length. Is 1m or more and has a width of at least 6
The above-mentioned dry transfer paper for inkjet printing having a size of 0 cm or more, the total thickness of the transfer paper for inkjet printing is 60 μm to 120 μm, and the basis weight is 60 g /
claim from m ² is 120 g / ^{m 2} 1 and claim 2
It is the dry transfer paper for inkjet printing described.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The dry transfer paper for ink-jet printing of the present invention will be described in detail below. The flexible support such as paper used in the practice of the present invention is not particularly limited as long as it is flexible such as paper having printability (running property, transportability, etc.) in an inkjet printer. Examples include paper having wood pulp as a main component, porous resin films made of a thermoplastic resin containing inorganic fine particles, and further non-woven fabrics and cloths. Paper having wood pulp as a main component is preferable. These papers,
A porous resin film made of a thermoplastic resin containing inorganic fine particles, further a non-woven fabric, a flexible support in the present invention such as cloth, bears most of the physical performance of the dry transfer paper for inkjet printing, The breaking elongation is preferably 10% or less, preferably 8% or less, and the thickness thereof is preferably 50 μm or more and 120 μm or less, and the basis weight is preferably 50 g / m ² or more and 120 g / m ² or less.

The elongation of the flexible support in the present invention is 10
When the amount exceeds 100%, it is not preferable because when printing with an inkjet printer, uneven running or abnormal growth occurs during running or passing through the printer, and the original image often causes distortion or missing ink, When the thickness of the flexible support in the present invention is less than 50 μm, there are many practical problems such as damage during printing in an inkjet printer, damage and wrinkles during transfer to a cloth, etc. If it exceeds the above range, the heating efficiency from the back surface of the support during transfer is often insufficient, which is considered insufficient heat transfer, and excessive heating and time are required for the fabric. In many cases, the texture of the cloth is impaired even if the transfer of the image from the transfer paper to the cloth is not hindered. In addition, when the basis weight of the flexible support in the present invention is less than 50 g / m ² , there are many problems in practical use due to damage during printing in an inkjet printer, frequent damage and wrinkles during transfer to a fabric, and the like. When the image is transferred from the transfer paper to the cloth, the dye is transferred to the cloth at the same time when the dye is transferred to the back side of the support, resulting in poor transfer efficiency and contaminating the equipment of the transfer press. On the other hand, if it exceeds 120 g / m ² , the transfer efficiency at the time of transfer is often insufficient, and excessive heating and time are required for the cloth, and there is no problem in transferring the image from the transfer paper to the cloth. In many cases, the texture of the fabric is often impaired.

As the receiving layer of the ink jet printer ink containing the sublimable dye in the present invention, various known ink receiving layer constitutions can be used. For example, mainly a filler and a non-peeling material (at the time of transfer) (Peeling from a flexible support such as paper or transfer to a cloth does not occur)
An ink receiving layer containing is preferably used. Examples of the filler include light calcium carbonate, heavy calcium carbonate, magnesium carbonate, magnesium hydroxide, kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, Aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, synthetic amorphous silica, colloidal silica, alumina, colloidal alumina, alumina hydrate (pseudo-boehmite, etc.), aluminum hydroxide, lithopone, zeolite, hydrohaloysite, magnesium hydroxide And the like, and styrene plastic pigments, acrylic plastic pigments, polyethylene, microcapsules, organic fillers such as urea resins and melamine resins, and the like. Of these, colloidal silica, kaolin, talc, amorphous silica, calcium carbonate, sodium carbonate, calcium sulfate, clay, porous alumina and boehmite are preferable.

The above-mentioned non-releasing material is used as a receiving layer on a flexible support such as paper, in which a sublimable dye of a print image formed on the receiving layer at the time of transfer is mainly sublimated and transferred to a cloth or the like. And at least the non-peelable material for forming the receiving layer,
It has the property that transfer from transfer paper to cloth does not occur due to heat or pressure. These non-releasing materials are obtained by printing an inkjet printer ink containing a red (magenta) sublimable dye having a sublimation point of 180 ° C. to 200 ° C. on the receiving layer of the present invention at 1440 dpi, and printing the printed surface on a polyester cloth. It is not particularly limited as long as it satisfies the essential requirement that the dye residual ratio on the printing surface of the transfer paper for inkjet printing after heat transfer treatment at 190 ° C. for 30 seconds satisfies the essential requirement of 3% by weight to 25% by weight, For example, starch derivatives such as starch, oxidized starch, cationized starch, etherified starch, phosphoric acid esterified starch, carboxymethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, cellulose derivatives such as cellulose sulfate, polyvinyl alcohol of various saponification degrees or silanol thereof. Modified product, Carboxy Le products, various derivatives and cationic compound, casein, gelatin, modified gelatin, natural polymers such as soybean protein, polyvinyl pyrrolidone, sodium polyacrylate, styrene -
Conjugated diene copolymer latex such as sodium salt of maleic anhydride copolymer, sodium polystyrene sulfonate, styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer, polymer or copolymer of acrylic acid ester and methacrylic acid ester. Acrylic polymer latex such as polymer, vinyl-based polymer latex such as ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, or a functional group-containing unit such as carboxy group of these various polymers Examples include water-soluble synthetic polymers such as thermosetting synthetic resins such as functional group-modified polymer latex, polyurethane resin-based latex, melamine resin, urea resin, etc., which are used alone or as a mixture of two or more thereof. it can.

The blending amount of the non-peelable material with respect to the filler is 50 to 1 with respect to 100 parts by weight of the total solid content of the filler.
It is 000 parts by weight, preferably 100 to 500 parts by weight. If it is less than 50 parts by weight, the coating strength of the ink receiving layer will be insufficient, and if it exceeds 1000 parts by weight, the ink receiving property (absorption) will be lowered. Furthermore, in the ink receiving layer, as an additive other than the filler, a dye fixing agent, a dispersant, a thickener, a fluidity improver, a defoaming agent, a foam suppressor, a release agent, a sizing agent, a penetrating agent, Coloring dyes, coloring pigments, optical brighteners, UV absorbers,
An antioxidant, a water repellent, an antiseptic, an antifungal agent, a wet strength enhancer, a dry strength enhancer and the like can be appropriately added. The ink receiving layer may be applied to a flexible support such as paper by a known method such as coating, impregnation and spraying, but coating is a preferable method. If the coating amount is small, not only will the problem of receptivity of the sublimable dye ink occur, but image density, color, and
The sharpness is low, the ink diffuses in the surface direction of the ink receiving layer and causes bleeding, and deterioration of the image sharpness occurs due to deterioration of the dot shape.

When the coating amount is large, the drying load in the drying step after coating is increased, and not only the productivity is lowered due to the reduction of the coating speed, but also the coating composition constituting the ink receiving layer is formed by the high-load drying. The non-peeling material inside moves to the surface of the ink receiving layer together with the solvent that evaporates, and reduces the amount of voids on the surface, so that the absorbability is reduced and bleeding or scumming occurs during inkjet printing, It is not preferable because the curling property deteriorates. From this viewpoint and on the receiving layer of the present invention, an inkjet printer ink containing a red (magenta) sublimable dye having a sublimation point of 180 ° C. to 200 ° C. is printed at 1440 dpi, and the printed surface is press-bonded to a polyester cloth, In order to satisfy the essential requirement that the dye residual ratio on the printing surface of the transfer paper for inkjet printing after the heat transfer treatment at 190 ° C. for 30 seconds is 3% by weight to 25% by weight, the coating amount of the ink receiving layer is 0. preferably .5~30g / m ^2, and more preferred is 1 to 15 g / m ^2. The ink receiving layer can be applied by dividing the above application amount into several times.

The method of applying the ink receiving layer is carried out by various machines such as various blade coaters, roll coaters, air knife coaters, bar coaters, rod blade coaters, curtain coaters, short dwell coaters and size presses on machine or off machine. Can be used. Further, after application, the ink receiving layer can be formed by performing flattening and gloss imparting finish using a calendar device such as a machine calender, a TG calender, a super calender and a soft calender. When applying the ink receiving layer, the ink receiving layer may be directly provided on a support such as paper, or may be previously subjected to corona treatment, frame treatment,
It may be applied after a known surface activation treatment such as plasma treatment.

The dry transfer paper for ink-jet printing of the present invention is one in which a receiving layer for an ink-jet printer ink containing a sublimable dye is provided on at least one surface of a support, and the total thickness thereof is 60 μm to 120 μm. It is preferable that the fabric weight is 60 g / m ² to 120 g / m ² , and if the thickness is less than 60 μm, breakage at the time of printing with an ink jet printer, damage and wrinkles during transfer to a fabric, etc. frequently occur and it is practical. There are many problems above, and when it exceeds 120 μm, the transfer efficiency at the time of transfer is often insufficient, and excessive heating and time are required for the cloth, so that the image is transferred from the transfer paper to the cloth. Even if there is no problem, the texture of the fabric is often impaired. The basis weight of the transfer paper in the present invention is 60 g /
If it is less than m ² , there are many problems in practical use due to damage at the time of printing with an inkjet printer, damage and wrinkles at the time of transfer to a cloth, and many problems in practical use. At the same time as the transfer of the dye, the transfer of the dye to the back side of the support takes place, resulting in a poor transfer efficiency and contaminating the equipment of the transfer press. On the other hand, if it exceeds 120 g / m ² , the transfer efficiency at the time of transfer is often insufficient, and excessive heating and time are required for the cloth, and there is no problem in transferring the image from the transfer paper to the cloth. Tomo
The texture of the fabric is often impaired.

The present invention is provided on one surface of a flexible support such as paper,
A dry transfer paper for inkjet printing provided with a receiving layer for an inkjet printer ink containing a sublimable dye, the release layer on the other side of the flexible support such as paper, a tack preventive layer, and the ink receiving layer The same ink receiving layer and gloss layer may be provided to form the backing layer. The formation of the glossy layer can also contribute to clarifying the print surface of the dry transfer paper for inkjet printing of the present invention. The colloidal particles preferably applied to the gloss layer have an average particle size of 30.
Those having a porous structure composed of amorphous silica or alumina of 0 nm or less are preferable. The colloidal particles are supplied in a suspended and dispersed form, and have a porous structure having a primary particle size of several nm or less, preferably 1 nm or less, and a structure of secondary particles or more in which amorphous silica or alumina forms a network. is there. When the gloss layer is formed by using the pigment in combination with other pigments, the colloid particles may be used in an amount of 5 parts by weight, preferably 10 parts by weight or more, based on 100 parts by weight of all the pigments in the gloss layer. Good.

The backing layer in the present invention is a layer formed by coating a liquid containing at least one resin mainly formed on the surface opposite to the ink receiving layer, and the backing layer is heat diffusible or heat sublimable. It is a coating layer that is applied to transfer the dye and prevent strike-through and contains an aqueous resin or a non-aqueous resin and, if necessary, a pigment. Examples of the aqueous resin include starch,
Starch derivatives such as oxidized starch, cationized starch, etherified starch, and phosphoric acid esterified starch, cellulose derivatives such as carboxymethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, and cellulose sulfate, polyvinyl alcohol of various saponification degrees or silanol modified products thereof, carboxyl Derivatives, cationized compounds and other derivatives, casein, gelatin, modified gelatin, soybean protein and other natural polymers, polyvinylpyrrolidone, sodium polyacrylate, styrene-maleic anhydride sodium salt, polystyrene polystyrene sulfonate, etc. Synthetic polymers are used.

Further, a conjugated diene copolymer latex such as a styrene-butadiene copolymer or a methyl methacrylate-butadiene copolymer, or an acrylic polymer latex such as a polymer or copolymer of acrylic acid ester and methacrylic acid ester. , Vinyl-based polymer latex such as ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, or functional group-modified polymer latex with a functional group-containing monomer such as carboxy group of these various polymers, Thermosetting synthetic resins such as polyurethane resin-based latex, melamine resin and urea resin can be used.

Examples of the non-aqueous resin include the following substances. High density polyethylene, low density polyethylene, medium density polyethylene, linear low density polyethylene, and other polyethylene, isotactic, syndiotactic, atactic, mixtures thereof, random copolymers with ethylene, block copolymers, etc. Polypropylene, other poly-3-methylpentene-1, polyethylene glycol terephthalate, polyvinyl chloride, polyvinylidene chloride, polyisobutylene, ethylene vinyl acetate copolymer and the like can be used alone or in combination. The backing layer composed of a composition containing a non-aqueous resin as a main component can be provided using a laminator such as a general melt extrusion die, a T die, and a multi-layer simultaneous extrusion die, or a hot melt coater. The coating amount of the backing layer varies depending on the substance to be applied, and therefore it is preferable to define the thickness by 2 to 15 μm.

When a pigment is added to the backing layer, the pigment is not particularly limited, and examples thereof include light calcium carbonate, heavy calcium carbonate, magnesium carbonate, magnesium hydroxide, kaolin, talc, calcium sulfate and barium sulfate. , Titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, diatomaceous earth,
Inorganic pigments such as calcium silicate, magnesium silicate, synthetic amorphous silica, colloidal silica, alumina, colloidal alumina, pseudo-boehmite, aluminum hydroxide, lithopone, zeolite, hydrohalloysite, magnesium hydroxide, styrene plastic pigment, acrylic plastic Pigments, polyethylene, microcapsules, organic resins such as urea resins and melamine resins, and the like. Among them, light calcium carbonate, heavy calcium carbonate, kaolin and the like which are usually used for coated papers for printing are preferably used. The compounding amount of the pigment with respect to the resin of the backing layer is 0 to 8 with respect to 100 parts by weight of the total solid content.
It is 0 part by weight, preferably 3 to 50 parts by weight, and if it exceeds 80 parts by weight, it may be difficult to control the air permeability, which is not preferable.

In the backing layer, as an additive, a dye fixing agent (various cationic resins), a pigment dispersant, a thickener, a fluidity improving agent, a defoaming agent, a defoaming agent, a releasing agent, a sizing agent. , Penetrant,
Coloring dyes, coloring pigments, fluorescent whitening agents, ultraviolet absorbers, antioxidants, preservatives, antifungal agents, wet strength enhancers, dry strength enhancers and the like can also be appropriately added. If the coating amount of the backing layer is too small, it becomes difficult to control the air permeability, and
If the coating amount is too large, the drying load in the drying step after coating is increased, which not only lowers the productivity due to the lowering of the coating speed but also deteriorates the curling property, which is not preferable. From such a viewpoint, the coating amount of the backing layer is ^{2 to 20} g / m ^2.
Is preferred. The method of applying the backing layer is to use various equipment such as blade coater, roll coater, air knife coater, bar coater, rod blade coater, short dwell coater, curtain coater, size press on machine or off machine. You can Further, after coating, it may be finished using a calendar such as a machine calendar, a TG calendar, a super calendar or a soft calendar. The backing layer may be provided after the ink receiving layer is provided, or may be provided on the surface opposite to the surface where the ink receiving layer is provided before the ink receiving layer is provided. However, when the ink receiving layer is provided by a glossy casting method, the backing layer is provided after the casting method ink receiving layer is provided because the cast surface will not be finished properly if the support does not have air permeability during casting. Is preferred.

The form of the dry transfer paper for ink-jet printing of the present invention may be A-4, B-5 or the like.
Commercial production (image adjustment, inkjet printing, sublimation transfer)
Above all, it is preferable that the width is at least 60 cm and the length is 1 m or more. With this configuration, even if individual images or the same image are continuously printed in commercial production, they can be efficiently printed on the transfer paper by an inkjet printer, and by sublimation transfer to the fabric thereafter. Printing can be carried out efficiently. As described above, when the dry transfer paper for inkjet printing of the present invention has a width of 60 cm or more and a length of 1 m or more, the dye residual ratio in the length direction in commercial production is as follows. It is preferable that the standard deviation is 2.0% or less. If the standard deviation of the residual dye ratio exceeds 2.0%, for example, images of the same specific size are continuously printed, and then this printing is performed. When a long piece of transfer paper is cut and the individual images are transferred to clothing or the like to obtain the printed garment, the images on the printed garments, which are individual products, may vary, which may affect the quality of the printed garment. It becomes a serious defect.

The dry transfer paper for ink-jet printing according to the present invention is formed by printing an inkjet printer ink containing a red (magenta) sublimation dye having a sublimation point of 180 ° C. to 200 ° C. on a receiving layer on the transfer paper at 1440 dpi. I crimped the surface that I made to polyester cloth,
It is an essential requirement that the dye residual ratio on the printed surface of the transfer paper for inkjet printing after the heat transfer treatment at 190 ° C. for 30 seconds is in the range of 3% by weight to 25% by weight, but more preferably the residual dye ratio is more preferable. Is a dry transfer paper for inkjet printing in the range of 5% by weight to 20% by weight. The dye residual ratio was measured as follows. << Measurement of Dye Residual Rate >> The value of the dye residual rate (%) is represented by an average value of at least 5 points. Inkjet printer, sublimation point 180
A 7% by weight aqueous dispersion of red (magenta) sublimable dye (eg, Disperse Red 60, Disperse Red 324, and Kayaset Red B) having an average particle diameter of 0.3 μm from ℃ to 200 ℃ (others) 10% by weight of glycerin, 5.0% by weight of sodium lignin sulfonate, etc.) ink-jet printer ink is loaded, and a dot density of 1440 dpi (scanning direction) x 720 dpi (vertical running in the scanning direction) is 4 cm on the transfer paper to be measured. Print on an area of × 4 cm, and obtain a transfer paper containing at least two area prints (each area print is printed at an interval of 3 cm), and print one area print of this transfer paper. Polyester fiber (single fiber 2 denier) 28 denier yarn 100% contact with 180 μm thick fabric Then, a heat plate at a temperature of 190 ° C. is pressed at a pressure of 300 g / cm ² for 30 seconds to perform sublimation transfer of the area print on the transfer paper, and the transfer paper after the processing is used as a cutout measurement sample (T ₁ ). The other one-area print was left untreated and was cut out to obtain an untreated measurement sample (T ₀ ).

Each of the collected samples was dipped in 4 g of acetone, treated at 20 ° C. for 24 hours, and the concentration of the dye dissolved in acetone was measured by using a spectrophotometer. The amount of sublimable dye was measured.
From the sublimable dye amount of T _{0 and} the sublimable dye amount of T ₁ , a dye residual rate (%) of (sublimable dye amount of T ₁ / sublimable dye amount of T ₀ ) × 100 was obtained. In the present invention, the transfer paper is obtained by printing an inkjet printer ink containing a red (magenta) sublimation dye having a sublimation point of 180 ° C. to 200 ° C. on a receiving layer on the transfer paper at 1440 dpi, and printing the printed surface on a polyester cloth. Crimped, 190 ° C for 3
It is an essential requirement that the dye residual ratio on the printing surface of the transfer paper for inkjet printing after the heat transfer treatment for 0 seconds is in the range of 3% by weight to 25% by weight. Preferably 5% to 20% by weight
Is the range.

The inventors of the present invention printed the ink jet printer ink containing the red (magenta) sublimable dye having a sublimation point of 180 ° C. to 200 ° C. at 1440 dpi and press-printing the printed surface onto a polyester cloth.
"Dry transfer paper for inkjet printing" in which the dye residual ratio on the printing surface of the transfer paper for inkjet printing after the heat transfer treatment at 190 ° C for 30 seconds is in the range of 3% by weight to 25% by weight, is printed by an inkjet printer. The original image adjusted smoothly by computer can be printed on the transfer paper with good reproducibility, and the original image can be printed on the cloth of easily sublimable dye dyeable fiber such as polyester with good reproducibility. It was found that the transfer can be performed under heating conditions that do not impair the texture of the cloth.

At least red (magenta, RE used in color printing in inkjet printers)
D), blue (cyan, BLUE), yellow (yellow, YELLOW),
The sublimable dyes used in the four color inks of black (BLACK) and the additional inks of light red, light blue, orange, green, etc. are sublimable and can be released from the transfer paper. Dye residual ratio, sublimable dyes such as polyester fibers are limited due to dyeability on a fiber material such as fabric that is easily receptive, and those sublimable dyes have different properties as described above. It is extremely difficult to print an image on a cloth with good reproducibility through transfer paper when selecting and combining dyes and transfer paper. The inventors of the present invention have made various studies as to the use of various combinations of inkjet transfer printing inks that can be used in such a state, and as a result, "inkjet printer ink containing a red (magenta) sublimation dye having a sublimation point of 180 ° C. to 200 ° C." 1440d
pi, the printed surface is pressure-bonded to a polyester cloth, and the dye residual rate on the printed surface of the transfer paper for inkjet printing after the heat transfer treatment at 190 ° C. for 30 seconds is in the range of 3% by weight to 25% by weight. In the case of "dry transfer paper for inkjet printing" in combination with various economically acceptable sublimation dyes, the original image is transferred to the fabric with good reproducibility as a clear image without image blurring and without losing the texture of the fabric. They have found that it is a dry transfer paper for inkjet printing that can be printed.

Although the details of the reason are not clear, the above-mentioned transfer paper having a residual dye amount of less than 3% by weight has a too high transfer efficiency at the time of transfer under the same conditions, and the sublimable dye ink and the ink receiving layer. It has almost no affinity with and the desorption and sublimation properties of the dye from the transfer paper are good, but this causes bleeding of the image on the transfer paper, and a clear original image is transferred and printed on the cloth. Will not be possible.

On the contrary, the above-mentioned transfer paper having a dye residual ratio of more than 25% by weight has too low transfer efficiency at the time of transfer under the same conditions, and has too much affinity between the sublimable dye ink and the ink receiving layer. In many cases, image bleeding on the transfer paper occurs, the desorption sublimation of the dye from the transfer paper is inferior, and even if an image without bleeding is printed on the transfer paper, each print image has a different hue. Each sublimable ink that is in charge of sublimation has a low sublimability from the transfer paper, and also causes a large difference in sublimability. Similarly, sublimation does not transfer to the fabric with sublimability, and it is no longer within the range of image reproducibility by computer adjustment. It is thought that there is a problem in that the printed image on the transfer paper is printed with good reproducibility on the cloth, and it becomes almost impossible to adjust, and it is extremely economical in terms of effective use of the dye. Be at a disadvantage.

The ink used in the present invention is an ink for dry transfer printing by an ink jet printer in which a sublimable dye whose dye molecules are sublimated by heat is dispersed in a liquid. These sublimable dyes may be those which can be sublimated, vaporized, diffused and transferred by heat of about 150 ° C to 210 ° C, and are sublimable dyes having a sublimation point of 160 ° C to 280 ° C and insoluble in water. Alternatively, it is insoluble. The sublimable dye is not particularly limited as long as it has the above-mentioned properties, and for example, C.I. I. Disperse Yellow-5, 42, 5
4, 64, 79, 82, 83, 93, 99, 100, 1
19, 122, 124, 126, 160, 184: 1,
186, 198, 199, 204, 211, 224, 2
37; C.I. I. Disperse Orange 13, 29, 3
1: 1, 33, 49, 54, 55, 66, 73, 11
8, 119163; C.I. I. Disperse Red 54,
60, 72, 73, 86, 88, 91, 92, 93, 1
11, 126, 127, 134, 135, 143, 14
5,152,153,154,159,164,16
7: 1, 177, 179, 181, 204, 206, 2
07, 221, 239, 240, 258, 277, 27
8, 283, 288, 311, 323, 324, 34
3, 348, 356, 362; C.I. I. Disperse Violet 26, 33, 77; C.I. I. Dispable Bull-56, 60, 73, 79, 79: 1, 87, 87:
1, 113, 128, 143, 148, 154, 15
8, 165, 165: 1, 165: 2, 176, 18
3, 185, 197, 198, 201, 214, 22
4, 225, 257, 266, 267, 287, 35
4, 358, 365, 368; C.I. I. Examples include Disperse Green 6: 1, 9 and the like.

These dyes may be used not only as one component but also as a mixture of two or more kinds, and these dyes are dispersed and contained in water to prepare an ink. The content of these dyes (total content when two or more types are used in combination) is
1 to 15% by weight based on the total weight of the ink, preferably 2 to
It is in the range of 10% by weight, more preferably 3 to 9% by weight. When the content of the disperse dye is less than 1% by weight, the coloring density is insufficient, and when the content of the disperse dye exceeds 15% by weight, the storage stability of the ink is deteriorated and the viscosity increases due to the evaporation of the ink near the nozzle tip. Causes ejection failure due to precipitation. When these sublimable dyes (disperse dyes) are used by being dispersed in water, the average diameter of the dye particles is 1 μm or less, preferably 0.5 μm or less. Examples of agents used to disperse dyes in water include so-called dispersants, surfactants and resins. As the dispersant or the surfactant, any of anionic type and nonionic type can be used, and as the anionic type, fatty acid salt, alkyl sulfate ester salt, alkylbenzene sulfonate, alkylnaphthalene sulfonate, dialkylsulfosuccinate, Examples include alkyl phosphate ester salts, naphthalene sulfonic acid formalin condensates, polyoxyethylene alkyl sulfate ester salts, and substituted derivatives thereof.

The nonionic compounds include polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkylamine, Examples thereof include glycerin fatty acid ester, oxyethyleneoxypropylene block polymer, acetylene glycol or ethylene oxide adduct thereof, and substituted derivatives thereof. Of these, formalin condensates of naphthalene sulfonic acid and derivatives thereof (especially alkylated products), acetylene glycol or ethylene oxide adducts thereof are particularly preferable.

The ink used in the present invention preferably contains water as a main component in the range of 50 to 90% by weight based on the total weight of the ink. When water is used in combination with a water-soluble organic solvent, they can be used alone or as a mixture, but preferred water-soluble organic solvents are monohydric alcohols, ketones, glycerin, ethylene glycol, diethylene glycol, triethylene glycol and tetra. They are ethylene glycol, thiodiglycol, propylene glycol, dipropylene glycol, tripropylene glycol and their derivatives (among others, their alkyl ethers). The main components of the sublimable dye-containing inkjet ink that can be used in the present invention are as described above, but other various antifoaming agents, viscosity adjusting agents, surface tension adjusting agents, pH adjusting agents, etc. may be added as necessary. You can This ink can be produced by a conventionally known dispersing method, mixing method, or the like using the sublimable dye, a compound that disperses the sublimable dye, a solvent, water, and other additives. As the physical properties of the ink, the viscosity is 2 to 30 cP, preferably 2 to 15
cP, more preferably 3 to 10 cP, surface tension is 20 to
A range of 50 dyn / cm is preferred.

The material constituting the cloth used in the present invention is not particularly limited as long as it is a cloth containing sublimable dye easily dyeable fibers, but among them, those containing polyester, acetate and triacetate are preferable. Among them, those containing polyester are particularly preferable. The polyester fiber-containing cloth can be used in any form of woven fabric, knitted fabric, non-woven fabric, and textile products such as sewn products. The cloth is preferably made of 100% fibers that can be sublimated and transferred with a sublimable dye, but the blending ratio is 30%.
Above 50%, preferably 50% or more, a mixed fiber or a mixed woven fabric or a mixture of a fiber sublimable and transferable by a sublimable dye and another material such as rayon, cotton, polyurethane, acrylic, nylon, wool or silk. Textiles or mixed-spun knitted fabrics or mixed-spun nonwoven fabrics can also be used as the fabric in the present invention.
In addition, the thickness of the yarns forming these fabrics is 10
The thickness of the monofilament constituting the yarn is not particularly limited, but is preferably 3 denier or less, but is not limited.

The above-mentioned cloth comprises 0.01 to 20% by weight of a water-soluble metal salt, a water-soluble polymer, and a dry weight of the cloth.
It may contain at least one substance selected from the group consisting of urea, thiourea and a surfactant. The total amount of these substances applied to the fabric is preferably 0.5 to 15% by weight, more preferably 1 to 12% by weight.
It is a degree. Examples of water-soluble polymers include starch substances such as corn and wheat, cellulosic substances such as carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, sodium alginate, arabic gum, locustite bean gum, tragacanth gum, guar gum, and polysaccharides such as tamarind seeds. A protein substance such as gelatin and casein; a tannin-based substance; a natural water-soluble polymer such as a lignin-based substance.

Examples of water-soluble synthetic polymers include polyvinyl alcohol compounds, polyethylene oxide compounds, acrylic acid water-soluble polymers, maleic anhydride water-soluble polymers, and the like. Among these, polysaccharide polymers and cellulose polymers are preferable. Examples of the water-soluble metal salts include compounds having a pH of 4 to 10 that form typical ionic crystals, such as halides of alkali metals and alkaline earth metals. Typical examples of such compounds include, for example, alkali metal salts such as NaCl, Na ₂ SO ₄ , KCl and CH ₃ CO.
ONa and the like can be mentioned, and CaCl ₂ , MgCl _{2 and the} like can be mentioned as the alkaline earth metal salt. Above all, N
Salts of a, K and Ca are preferred. As a surfactant,
Anionic, cationic, amphoteric and nonionic salts are used. Typically, higher alcohol sulfate ester salts, naphthalene derivative sulfonates are anionic, quaternary ammonium salts are cationic, and imidazoline derivatives are amphoteric. Examples of the nonionic type include polyoxyethylene alkyl ether, polyoxyethylene propylene block polymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and ethylene oxide adduct of acetylene alcohol.

[0037]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples.
Further, “parts” and “%” shown in the examples represent parts by weight and% by weight, unless otherwise specified.

* Example 1 <Preparation of flexible support> Wood pulp and light calcium carbonate
Three pigments, um / ground calcium carbonate / talc, al
Kirketene dimer, cationic acrylamide, starch
After preparing powder and sulfuric acid, make paper with a Fourdrinier paper machine to remove starch.
Dry adhesion amount 3g / m ²Impregnated and dried to a thickness of 75μ
m, basis weight 73 g / m²Flexibility with elongation at break of 5% or less
I got a piece of paper, a holding body. <Formation of ink receiving layer> Ink receiving layer
The composition of the layer is kaolin, talc, colloidal sili
Mosquito, calcium carbonate, sodium carbonate, calcium sulfate
Fillers for clay, clay, casein, modified acrylic emulsion
Polyvinyl alcohol, CMC (carboxy cell
Loose), at least one kind of non-peelable material
And non-peelable material 1 type, and further using water,
The composition was adjusted to a concentration of 12% to obtain several compositions. Then each
The composition was dried with an air knife coater to give a coating amount of 5 g.
/ M²Coated so that it becomes a super calendar
Transfer paper 1 after treatment to form an ink receiving layer by coating
-Transfer of 6 types up to transfer paper 6 with a width of 90 cm and a length of 50 m
Got the paper. The breaking elongation of each of the obtained transfer papers is 5% or less.
The bottom and basis weight are both 78 g / m²And the thickness is
It was also 79 μm.

The residual rate of the dye of each of the obtained transfer papers after the transfer treatment was measured as follows. In a piezo type inkjet printer, the average particle size of red (magenta) sublimable dye Dispers Red 324 having a sublimation point of 190 ° C.
3 μm 7% by weight aqueous dispersion (other glycerin 10
Wt%, and 5 wt% sodium lignin sulfonate, etc.) inkjet printer ink is loaded, and 1440 dpi (scanning direction) × 720 dpi on the transfer paper to be measured.
Dot density of i (running vertically in the scanning direction) is 4 cm x 4 c
A transfer paper containing at least two area prints (each area print is printed at an interval of 3 cm) is obtained by printing an area print of m. Fiber (single fiber 2 denier) 28 denier yarn 100% used, it is in contact with a 180 μm thick fabric, and a heat plate at a temperature of 190 ° C. is pressed at a pressure of 300 g / cm ² for 30 seconds to print an area print on the transfer paper. Sublimation transfer was carried out, and the transfer paper after the treatment was used as a cutout measurement sample (T ₁ ), while the other one-area print was left untreated as a cutout untreated measurement sample (T ₀ ), and each sample was taken. , Immersed in 4g of acetone, 20 ℃
Then, the concentration of the dye dissolved in acetone was measured using a spectrophotometer, and the amount of the sublimable dye on the transfer paper on the transfer paper was measured from a calibration curve prepared in advance. From the sublimable dye amount of T _{0 and} the sublimable dye amount of T ₁ , a dye residual rate (%) of (sublimable dye amount of T ₁ / sublimable dye amount of T ₀ ) × 100 was obtained. Further, 5 points of the same measurement for each 1 m of each transfer paper were taken, the dye residual ratio (%) was obtained, and the standard deviation of the dye residual ratio was evaluated.

The results are as follows: transfer paper 1: average dye residual ratio 3.
1%; standard deviation 1.2 transfer paper 2: average dye residual rate 10.8%; standard deviation 1.6 transfer paper 3: average dye residual rate 15.8%; standard deviation 1.8 transfer paper 4: residual dye Rate average 17.8%; standard deviation 1.9 Transfer paper 5: dye residual rate average 20.1%; standard deviation 2.0 Transfer paper 6: dye residual rate average 25.8%; standard deviation 2.2

Using transfer papers 1 to 6, as red ink, red (magenta) sublimable dye Disperse Red 324 having a sublimation point of 190 ° C. has an average particle diameter of 0.3 μm.
m which is a 7% by weight aqueous dispersion of m (including 10% by weight of glycerin, 5% by weight of sodium lignin sulfonate, etc.) as an yellow ink, and an average particle of sublimation dye Dispers Yellow 54 having a sublimation point of 260 ° C. Diameter 0.3
It is a 4.5% by weight aqueous dispersion of μm (other glycerin 1
0% by weight, sodium lignin sulfonate 4.5% by weight, etc.) ink, blue ink, sublimation point 220
Average particle size of the sublimable dye Disperse Blue at 0 ° C.
A 3 μm 5.5% by weight aqueous dispersion (including 7% by weight of glycerin, 6.5% by weight of sodium lignin sulfonate, etc.) as an ink, and black inks of the above red, blue, yellow and green, and orange. Average particle size of dye mixed with sublimable dye 0.3
μm 8.5% by weight aqueous dispersion (other glycerin 1
1% by weight, 5% by weight of sodium lignin sulfonate, etc.) Ink, and the red and blue inks have about half the dye concentration, and the same light red and light blue inks are then loaded into the piezo ink jet printer. Then, a photograph of a famous garden landscape with a bright red umbrella placed in the moss garden is taken as an original image with a scanner, and color adjustment is performed by a computer (adjusted so that the original image is reproduced when it is transferred and printed on the cloth), A print signal was issued to the inkjet printer and printed on each transfer paper in the size of A-3. Polyester fiber (single fiber 2 denier) 2
It is brought into contact with a fabric having a thickness of 180 μm using 100% of 8 denier yarn, and a heat plate at a temperature of 190 ° C. is pressed at a pressure of 300 g / cm ² for 45 seconds for sublimation transfer of the print on the transfer paper, and each printing polyester fabric 1 ~ 6 was obtained.

Each of the obtained printing polyester fabrics 1 to 6 was visually judged. The printing polyester fabric using the transfer paper 1 showed a slight blurring of the image, but the landscape photograph was almost reproduced and printed. Was there. Further, the printed polyester cloth using the transfer paper 6 has a slight blurring of the image,
In the color of the landscape photograph, the redness was poor and the green color was too pale. The printing polyester cloths using the other transfer papers 2 to 5 had no blurring of the image and the original image which was a clear landscape photograph was reproduced and printed.

* Example 2 Using the transfer paper 3 in Example 1 and using an ink other than the red ink used in Example 1, the dye residual ratio was measured according to the dye residual ratio measurement of the red sublimable dye. It was measured. As a result, the blue ink is 7.1%, the yellow ink is 4.5%,
The black ink was 14.5%, the light red ink was 3.9%, and the light blue ink was 3.7%. A landscape photograph of the fishing port was taken as an original image on each transfer paper in Example 1 by a scanner, color adjustment was performed by a computer (adjustment was performed so that the original image was reproduced when transfer printing was performed on the cloth), and then an inkjet printer was used. A print signal was emitted, and 10 sheets were continuously printed on each transfer paper in a size of 2 m in length and 60 cm in width. For each transfer paper, no trouble was found during printing. Each of the obtained long print transfer papers was overlaid with the polyester long cloth used in Example 1, loaded into a roller type transfer machine, roller temperature 195 ° C., contact pressure 0.5 kg / c.
Continuous transfer was carried out at m ² for a roller contact time of 45 seconds to obtain a long transfer printing polyester cloth. The long-length transfer printing polyester cloth using the transfer paper 1 and the transfer paper 6 showed substantially the same tendency as the evaluation in Example 1 and had some defects, but other transfer papers 2 to 5 were used. The long-length transfer-printed polyester cloth from No. 1 was printed with a clear landscape photograph reproduced without image bleeding.

[0044]

EFFECTS OF THE INVENTION Using the dry transfer paper for inkjet printing of the present invention, a fine image such as a photograph is printed on the transfer paper using an inkjet printer, and the printed surface of the printed transfer paper is a polyester cloth. Sublimation dyes such as the ones mentioned above come into contact with a fabric containing easily dyeable fibers, and are heated at a temperature that does not impair the texture of the fabric, and the printed image is transferred to the fabric to be sublimated. It is possible to print on textile products such as cloth with good performance and vividly, without using water or chemicals.
It can be produced in a short time and is extremely effective in commercial production by inkjet dry transfer printing.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B41J 3/04 101Z F term (reference) 2C056 EA05 EC29 FB03 FC06 FD03 FD13 2H086 BA21 BA26 BA41 BA56 BA60 4H057 AA01 AA02 BA12 DA17 FA17 FA42 GA06 HA01 JB02

Claims (3)

[Claims] 1. A dry transfer paper for ink-jet printing, comprising a receptive layer for an ink-jet printer ink containing a sublimable dye on one surface of a flexible support such as paper, the sublimation point being 180 ° C. on the receptive layer. To 200 ° C. red (in the present invention, also referred to as red and magenta) sublimation dye, an inkjet printer ink is printed at 1440 dpi, and the printing surface is pressure-bonded to a polyester cloth.
The dry transfer paper for inkjet printing, wherein the dye residual ratio on the printing surface of the transfer paper for inkjet printing after the heat transfer treatment at 0 ° C. for 30 seconds is in the range of 3% by weight to 25% by weight. 2. The standard deviation in the lengthwise direction of the dye residual ratio after the heat transfer treatment is 2.0% or less, and the length is at least 1 m.
The dry transfer paper for inkjet printing according to claim 1, having a width of at least 60 cm. 3. The dry transfer paper for inkjet printing according to claim 1, wherein the total thickness of the transfer paper for inkjet printing is 60 μm to 120 μm, and the basis weight is 60 g / m ² to 120 g / m ² .