JP2995135B2 - Inkjet printing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to printing on a cloth using an ink jet printer, and more particularly to a printing method suitable for printing on a cloth.

[0002]

2. Description of the Related Art Conventionally, as a method for ink-jet printing on a cloth, a cloth is temporarily adhered to a non-stretchable flat support coated with a pressure-sensitive adhesive and printed with a printer (JP-A-63-6183). Also, a method is known in which a cloth is attached to a sheet having an adhesive layer in which an adhesive and a migration inhibitor are mixed and ink-jet printing is performed (Japanese Patent Laid-Open No. 2-68272). In these prior arts, contrivance has been made to improve the transportability of a cloth having an unstable shape in a printer and to suppress irregular bleeding of ink during recording. However, these prior arts still have many unsatisfactory points and need to be improved. In other words, the optimal color material structure and type differ depending on the type of cloth, so the type of ink used must be changed.In addition, ink used in conventional office and personal inkjet printers is paper. And OH
Since it is designed to record on a P film, not only is the type of cloth that can be recorded limited, but also the color density after printing is low.

[0003]

The problem to be solved by the present invention is that, in the prior art, the ink used must be changed according to the type of cloth, resulting in poor operability, and particularly for office and personal use. When applied directly to an ink jet printer, the color density after printing becomes low, and the type of cloth that can be printed is limited. In addition, it is difficult to obtain a practical printed matter due to contamination of an undyed portion which occurs in a washing step after printing.

[0004]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have reached the present invention. That is, the present invention is an ink jet printing method comprising the steps of performing ink jet printing on a cloth treated with a cationic substance, and then washing and drying the cloth with water in which an amphoteric surfactant is dissolved.

Hereinafter, the present invention will be described in detail.

[0006] The basic constitutional requirements of the present invention are as follows. First, in order to be able to print on all kinds of cloths with the ink used in a commercially available ink jet printer,
The treatment of the cloth with a cationic substance, the second is to put a base material on the back of the cloth to improve the transportability of the cloth in the printer, and the third is that the recording is performed on the cloth. In order to prevent unprinted portions from being contaminated in the washing step after the washing, an amphoteric surfactant is previously contained in the washing water.

The types of the cloth treated with the cationic substance constituting the present invention include cotton, silk, nylon, rayon, acetate, polyester, and blended cloths thereof. There are three processing methods.

[0008] A reactive quaternary amine compound is reactively added to the fiber.

[0009] The cationic inorganic fine particles and a binder are applied (in combination with a crosslinking agent).

[0010] An anion-dyeable polymer substance is applied (in combination with an adhesive).

Specific examples of the reactive quaternary amine compound include the following compounds.

[0012]

Embedded image

[0013]

Embedded image

[0014]

Embedded image

[0015]

Embedded image

[0016]

Embedded image

[0017]

Embedded image

[0018]

Embedded image

[0019]

Embedded image

[0020]

Embedded image

[0021]

Embedded image

[0022]

Embedded image

[0023]

Embedded image

[0024]

Embedded image (In the above formula, X represents a halogen such as Cl or Br.) Examples of the cationic inorganic fine particles include alumina sol (particle size: 5 μm to 200 μm). Specific examples thereof include alumina sol-100 manufactured by Nissan Chemical Industries, Ltd. , Alumina sol-200, alumina sol-520 and the like.

Examples of the anionic dyeable polymer substance include gum arabic, casein, glue, soybean protein, urea resin, melamine resin, polyacrylamide, polyamide,
Examples include polyurethane, polyethyleneimine, and quaternary amino group-containing polymers.

As the crosslinking agent, a bifunctional epoxy compound,
Bisacrylamide, dimethylol ethylene urea, dimethylol propylene urea, dimethylol dihydroxy ethylene urea, methylated dimethylol dimethoxy ethylene urea and the like can be mentioned.

As a method of cationically treating a cloth with these compounds, a solution of these compounds is applied or impregnated on the cloth, then cured by heating, washed with water and dried. Also, the amount of these treatment agents applied to the cloth depends on the treatment method,
Although it depends on the type of the treatment agent, it is generally 0.1 to 30% by weight based on the cloth.

Further, in order to improve the bleeding and absorption of the ink on the surface of the cloth treated with the cationic substance, a water-soluble salt, a water-soluble resin, a water-repellent compound and the like can be further applied and impregnated. .

As the substrate used in the present invention, paper, synthetic resin film, metal foil plate, and a laminate thereof are used. In the present invention, the thickness is 30 to 300 μm.
Paper or synthetic resin film is most suitable. Known adhesives can be used as the adhesive applied to one surface of these substrates. For example, an adhesive resin such as a homopolymer resin such as polyvinyl alcohol, polyvinyl ether, polyacrylate, or polyisobutylene, or an adhesive resin such as a copolymer resin, or an adhesive group such as natural rubber, styrene-butadiene rubber, and butadiene-acrylonitrile rubber. Various adhesives obtained by adding a tackifier made of a polyterpene-based resin and modified products thereof, natural rosins and modified products thereof, and various aliphatic or aromatic resins to the agent. Also, in order to improve the spinnability of these adhesives, inorganic pigments such as talc and calcium carbonate are added,
A fluorine-containing compound can be used to enhance the releasability. Next, the method of applying the pressure-sensitive adhesive to the base material can be performed using a usual coating apparatus, and any of all-surface application, linear application, and dot application can be used. To attach the cloth to the substrate coated with the adhesive, the cloth is attached to the surface of the substrate coated with the adhesive, and the cloth is passed, for example, between two rolls or pressed with a press machine. By applying an even pressure to the entire surface of the substrate.

In the present invention, 0.1 to 10 g / l of an amphoteric surfactant is added to the washing water in order to prevent so-called white spot contamination in which unprinted portions on the cloth are stained and to suppress image bleeding. It is necessary. Examples of the amphoteric surfactant include an amino acid type, a betaine type, a sulfate ester type, a sulfonate type, and a phosphate ester type, and an amino acid type and a betaine type amphoteric surfactant are preferable. Examples thereof include sodium lauryl aminopropionate, polyoctyl polyaminoethyl glycine, lauryl aminopropyl glycine, lauryl dimethyl betaine, N-lauryl-N-hydroxyethyl-N-carboxymethyl imidazolinium betaine, cocopropyl fatty acid amidopropyl betaine, lauryl Dihydroxyethyl betaine, stearyl dimethyl betaine and the like.

The amphoteric surfactant has an effect of rapidly aggregating undyed dyes when washing the printed matter of the present invention with water to prevent white-field contamination and sharpening the edge of an image. Further, by making the pH of the washing solution acidic as a treatment condition, the masking of the cationized treatment surface of the cloth is also performed at the same time, so that it is superior to other treatment agents.

Next, a method of performing ink-jet printing using the cloth of the present invention will be described. Usable inks include inks of any of reactive dyes, acid dyes and direct dyes. That is, the ink used in a normal inkjet printer can be used as it is. For printing, ordinary recording may be performed by attaching a cloth to a commercially available inkjet printer.

The cloth used in the present invention has a size of, for example, A4 size, and can be printed like ordinary paper or OHP, or can be rolled and printed continuously.

A preferred method and apparatus for performing printing using the cloth of the present invention include, for example, applying thermal energy to ink in a chamber of a head in response to a signal, and generating ink droplets by the thermal energy. And a method for causing the same to occur.

FIGS. 1, 2 and 3 show examples of the structure of a head which is a main part of the apparatus.

The head 13 includes a glass, ceramic or plastic plate having a groove 14 through which ink passes, and a heating head 15 (a glass head is shown in the figure, but is not limited to this). )
And obtained by bonding. The heating head 15 has a protective film 16 made of silicon oxide or the like, and an aluminum electrode 17-.
1, 17-2, heating resistance layer 1 formed of nichrome or the like
8, a heat storage layer 19, and a substrate 20 having good heat dissipation such as alumina.

The ink 21 has a discharge orifice (fine hole) 2
2, and the meniscus 23 is formed by the pressure P.

Here, when an electric signal is applied to the electrodes 17-1 and 17-2, the area of the heating head 15 indicated by n rapidly generates heat, and bubbles are generated in the ink 21 in contact with the area. The meniscus 23 projects by pressure, the ink 21 is ejected, becomes an ink droplet 24 from the orifice 22, and flies toward the print medium 25.

FIG. 3 is an external view of a multi-head in which many heads shown in FIG. 1 are arranged. The multi-head is manufactured by closely contacting a glass plate 27 having a multi-groove 26 and a heating head 28 similar to that described with reference to FIG.

FIG. 1 shows a head 1 along an ink flow path.
3 is a sectional view, and FIG. 2 is a cross-sectional view taken along a line AB in FIG.

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

In FIG. 4, reference numeral 61 denotes a blade as a wiping member, one end of which is held by a blade holding member to become a fixed end, and forms a cantilever. The blade 61 is disposed at a position adjacent to a print area by the head, and in this example, is held in a form protruding into the movement path of the head. Reference numeral 62 denotes a cap, which is provided at a home position adjacent to the blade 61 and has a configuration in which the cap moves in a direction perpendicular to the moving direction of the head to abut on the discharge port surface to perform capping. Further 63
Is an absorber provided adjacent to the blade 61 and, like the blade 61, is held in a form protruding into the movement path of the head. The blade 61, the cap 62, and the absorber 63 constitute a discharge recovery unit 64, and the blade 6
1 and the absorber 63 remove water, dust and the like from the ink ejection port surface.

Reference numeral 65 denotes a head having discharge energy generating means for performing printing by discharging ink onto a print medium facing a discharge port surface having discharge ports, and 66 represents a head 65.
On which the head 65 is moved. The carriage 66 is slidably engaged with the guide shaft 67, and a part of the carriage 66 is connected to a belt 69 driven by a motor 68 (not shown). Thus, the carriage 66 can move along the guide shaft 67, and the head 65 can move the print area and the area adjacent thereto.

Reference numeral 51 denotes a cloth feeding unit for inserting a print medium, and reference numeral 52 denotes a cloth feed roller driven by a motor (not shown). With these configurations, the cloth is supplied to a position facing the discharge port surface of the head, and is discharged to a discharge section provided with discharge rollers 53 as printing proceeds.

In the above configuration, when the head 65 returns to the home position at the end of printing or the like, the cap 62 of the head recovery unit 64 is retracted from the moving path of the head 65, but the blade 61 protrudes into the moving path. As a result, the ejection port surface of the head 65 is wiped. When capping is performed with the cap 62 in contact with the ejection surface of the head 65, the cap 62 moves so as to protrude into the moving path of the head.

When the head 65 moves from the home position to the print start position, the cap 62 and the blade 61 are at the same position as the position at the time of wiping described above. As a result, the ejection port surface of the head 65 is also wiped during this movement.

The above-mentioned movement of the head to the home position is performed not only at the end of printing or at the time of ejection recovery, but also at a predetermined interval to the home position adjacent to the printing area while the head moves through the printing area for printing. The wiping is performed along with the movement.

FIG. 5 is a diagram showing an example of an ink cartridge containing ink supplied to the head via an ink supply member, for example, a tube. Here, reference numeral 40 denotes an ink storage portion that stores the supply ink, for example, an ink bag, and a rubber stopper 42 is provided at the tip thereof. By inserting a needle (not shown) into the stopper 42, the ink in the ink bag 40 can be supplied to the head. 44
Is an absorber for receiving waste ink. As the ink supply unit, a unit whose liquid contact surface with the ink is formed of polyolefin, particularly polyethylene, is preferable for the present invention. The ink jet printing apparatus used in the present invention is not limited to the one in which the head and the ink cartridge are separated as described above, but may be suitably used in an integrated one as shown in FIG.

In FIG. 6, reference numeral 70 denotes a print unit, which contains an ink containing section containing ink, for example, an ink absorber, and the ink in the ink absorber has a plurality of orifices. Head part 7
It is configured to be ejected from 1 as ink droplets. It is preferable to use polyurethane as the material of the ink absorber. Reference numeral 72 denotes an atmosphere communication port for communicating the inside of the print unit with the atmosphere. This print unit 7
Numeral 0 is used in place of the head shown in FIG. 4, and is detachable from the carriage 66.

The printed fabric is heated, if necessary, then washed with water, and the fabric is peeled off from the substrate and dried. Alternatively, after drying, the printed material is obtained by peeling the fabric from the substrate. The heating and coloring treatment after printing is a preferred treatment step because the coloring efficiency can be improved. As the treatment method, heating with an iron or the like or treatment with a steam iron is preferred.

[0051] The obtained printed matter may be, if necessary,
Cut to the desired size, the cut pieces are sewn,
Steps for obtaining a final processed product such as adhesion and welding are performed, and a processed product such as a tie and a handkerchief can be obtained.

[0052]

Next, the present invention will be described more specifically with reference to examples.

Example 1 An aqueous solution comprising Kayacryl Resin T-180 (manufactured by Nippon Kayaku Co., Ltd .: a water-soluble pressure-sensitive adhesive mainly composed of polyacryl) was applied to a thickness of about 80 μm using a doctor knife coater. 70 g / m ²
Was applied to the surface of paper processed with a fluoro resin.
Next, it was dried with hot air of 80 ° C. and wound up. The cotton lawn treated with the compound shown in the above specific example [Chemical Formula 2] as a reactive quaternary amine compound is combined, adhered through two rubber rolls, and cut out to the size of A4 size. Multicolor printing was performed using a commercially available inkjet color printer (BJC-820J manufactured by Canon). Immediately after the printing, the cloth was peeled off from the paper, and after steam ironing, the cloth was sufficiently washed with a 0.1% aqueous solution of laurylaminopropylglycine (pH = 4.0) and then dried. A color image of sufficient density was printed vividly on the cotton loan. In addition, a sharp image was obtained without staining of a white portion where ink did not adhere.

Example 2 An aqueous solution comprising Kayacryl Resin H-900 (manufactured by Nippon Kayaku Co., Ltd .: a water-soluble pressure-sensitive adhesive mainly based on polyacryl) was applied on a mylar film having a thickness of about 70 μm using a silk screen. It dried with the hot air of ° C. This was mixed with a mixture of a polyamide resin and dimethylol dihydroxyethylene urea, which had been applied and heat-treated, and bonded together to pass between two rubber rolls.
Then, similarly to Example 1, the sheet was cut out to the size of A4 size, and a commercially available inkjet color printer (BJC manufactured by Canon Inc.) was used.
-820J) to perform multi-color printing.
Immediately after printing, remove the fabric from the film and iron it. Then 0.2% of lauryl dimethyl betaine
Washed thoroughly with an aqueous solution (pH = 5.0) and dried.
A sufficient density color image was printed vividly on the polyester georgette. In addition, a sharp image was obtained without staining of a white portion where ink did not adhere.

Example 3 The paper coated with the pressure-sensitive adhesive prepared in the same manner as in Example 1 and the above-mentioned specific example as a reactive quaternary amine compound [Formula 7]
The rayon fabrics cationized with the compound were combined and bonded between two rubber rolls. Then, similarly to Example 1, the sheet was cut out to the size of A4 size, and a commercially available inkjet color printer (BJC-82 manufactured by Canon) was cut out.
0J) to perform multi-color printing. Immediately after printing, the cloth was peeled off from the paper, washed thoroughly with a 0.05% aqueous solution of sodium laurylaminopropionate, and dried. A sufficient density color image was printed vividly on the rayon fabric. In addition, a sharp image was obtained without staining of a white portion where ink did not adhere.

Example 4 A blend of polyester and cotton (65/35) was padded with an aqueous solution containing 4% of alumina sol-200 and 0.5% of polyvinyl alcohol (Nissan Chemical Industries, Ltd.) (drawing ratio: 80%).
After treatment and curing at 130 ° C., the adhesive was adhered to the Mylar film coated with the pressure-sensitive adhesive used in Example 2. Then, similarly to Example 1, it was cut out to the size of A4 size, and a commercially available inkjet color printer (BJC-8 manufactured by Canon Inc.) was used.
20J) to perform multi-color printing. Immediately after printing, the cloth was peeled off from the film, washed thoroughly with a 0.03% aqueous solution of lauryl dihydroxyethyl betaine, and dried. A color image of sufficient density without unevenness was printed vividly on the polyester / cotton blended fabric. In addition, a sharp image was obtained without staining of a white portion where ink did not adhere.

Example 5 A paper coated in the same manner as in Example 1 and coated with a pressure-sensitive adhesive was used as a reactive quaternary amine compound. The adhesive was passed between two rubber rolls together with the weight. Then, similarly to Example 1, it was cut out to the size of A4 size, and a commercially available inkjet color printer (BJC-820 manufactured by Canon Inc.) was used.
Multicolor printing was performed using J). Immediately after printing, the cloth was peeled off from the paper, and a 0.02% aqueous solution of coconut fatty acid amidopropyl betaine (pH = 4.
Washed well in 5) and dried. A color image of sufficient density was printed vividly on the silk feathers. In addition, a sharp image was obtained without staining of a white portion where ink did not adhere.

Comparative Example 1 A commercially available ink jet color printer (Canon BJC-82) was prepared in the same manner as in Example 1 except that laurylaminopropylglycine was not used.
0J) to perform multi-color printing. Immediately after printing, the sheet was ironed with steam and washed thoroughly with water, and the cloth was dried. Although a color image of sufficient density was obtained on the cotton loan, the white portion where no ink adhered was conspicuous and the sharpness of the image edge was poor.

Comparative Example 2 A recording material was prepared in the same manner as in Example 5, except that untreated silk feathers were used in place of the cationized silk feathers in Example 5. Next, as in Example 5, the sheet was cut out to the size of A4 size, and multicolor printing was performed using a commercially available inkjet color printer (BJC-820J manufactured by Canon). After completion of printing, the sheet was dried by heating at 80 ° C. for 30 minutes, thoroughly washed with water, and then the cloth was peeled off from the substrate and dried. The color image on the silk feathers was insufficient in density and was impractical.

[0060]

As described above, according to the present invention,
There is no need to change the ink used according to the type of cloth, and printing with good operability can be performed.

Further, according to the present invention, a clear printed matter having a high color density can be obtained even when directly applied to a commercially available ink jet printer for office or personal use.

Further, according to the present invention, printing on textiles can be performed by simple steps.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view illustrating a head section of an inkjet printing apparatus.

FIG. 2 is a cross-sectional view illustrating a head section taken along line AB in FIG.

FIG. 3 is an external perspective view for explaining a head obtained by multiplying the head shown in FIG. 1;

FIG. 4 is a perspective view illustrating an example of an inkjet printing apparatus.

FIG. 5 is a longitudinal sectional view illustrating an ink cartridge.

FIG. 6 is a perspective view illustrating a print unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 13 Head 14 Groove 15 Heating head 16 Protective film 17-1, 17-2 Aluminum electrode 18 Heating resistance layer 19 Heat storage layer 20 Substrate 21 Ink 22 Orifice 23 Meniscus 24 Ink droplet 25 Print medium 26 Multi-groove 27 Glass plate 28 Heating head Reference Signs List 40 Ink bag 42 Plug 44 Ink absorber 45 Ink cartridge 51 Supply section 52 Cloth feed roller 53 Discharge roller 61 Blade 62 Cap 63 Absorber 64 Discharge recovery section 65 Head 66 Carriage 67 Guide shaft 68 Motor 69 Belt 70 Print unit 71 Head Part 72 Atmosphere communication port

Continuation of the front page (72) Inventor Sentence Takade 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Tomoya Yamamoto 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Mariko Suzuki 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (56) References JP-A-5-222684 (JP, A) JP-A-5-148775 (JP, A JP-A-61-132688 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) D06P 5/00 111 B41M 5/00

Claims (7)

(57) [Claims] 1. Ink jet recording is performed on a cloth treated with a cationic substance, and then, if necessary, after a color forming treatment,
An ink jet printing method comprising a step of washing with water in which an amphoteric surfactant is dissolved and drying. 2. The cotton, wherein the cloth is treated with a cationic substance.
2. The ink jet printing method according to claim 1, wherein the ink jet printing method is silk, hemp, rayon, acetate, nylon, polyester fiber cloth, or a blended cloth thereof. 3. The ink-jet printing method according to claim 1, wherein the cloth treated with the cationic substance is stretched on the substrate via an adhesive. 4. A printed material printed by the ink jet printing method according to claim 1. 5. A processed product obtained by further processing the printed matter according to claim 4. 6. The processed product is obtained by cutting the printed material into a desired size and performing a process for obtaining a final processed product on the cut pieces. Processed goods. 7. The processed product according to claim 6, wherein the step of obtaining the final processed product is sewing.