JPH0717090B2 - Inkjet recording medium - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a recording medium for recording with ink, and particularly, the density of images and characters recorded on the medium is high, and the water resistance of the recorded image is high. The present invention relates to an inkjet recording medium having excellent properties and light resistance.

(B) Prior Art and Its Problems The ink jet recording method is one in which minute droplets of ink are ejected according to various operating principles and adhered to a recording medium such as paper to record images, characters, and the like. ,high speed,
It has features of low noise, easy multi-coloring, great flexibility of recording patterns, and no need for development and fixing. It is rapidly used in various applications as a recording device for various figures including Kanji and color images. Is popular in In addition, images formed by the multicolor inkjet system can also be used for multicolor printing by the platemaking system and for obtaining records that are comparable to printing by the color photographic system, and for applications that require a small number of copies. Since it is cheaper than the photographic technique, it is being widely applied to the field of full-color image recording.

As a recording medium used in this ink jet recording system, efforts have been made in terms of equipment and ink composition so as to use high-quality paper or coated paper used for ordinary printing and writing. However, as the performance of the inkjet recording apparatus has been improved and the applications have been expanded, such as high speed, high definition and full color of the apparatus, more advanced characteristics have been required for the recording medium. That is, as the recording medium, the density of the ink dots is high, the color tone is bright and vivid, the ink does not flow out or bleed even when the ink dots overlap and the ink dots overlap, The lateral spread of is not unnecessarily large, and the periphery is smooth and does not blur. Further, it is required that the resistance of the dye when the recorded image is exposed to ultraviolet rays, oxygen in the air, or water is not lowered, and preferably enhanced.

Several proposals have been made in the past to solve these problems. For example, JP-A-52-53012 discloses an ink jet recording paper obtained by wetting a low-sized base paper with a coating material for surface treatment, and JP-A-53-49113 discloses a urea-formalin resin powder. An inkjet recording paper is disclosed in which the added sheet is impregnated with a water-soluble polymer. These general paper type inkjet recording papers absorb ink quickly, but have drawbacks in that the periphery of dots is easily blurred and the dot density is low.

Further, JP-A-55-5830 discloses an inkjet recording sheet having an ink-absorbent coating layer on the surface of a support,
Further, in JP-A-55-51583, an example in which non-colloidal silica powder is used as a pigment in the coating layer, and in JP-A-55-11829, an example of a smear paper using a two-layer structure having different ink absorption rates is shown. JP-A-59-174381 and JP-A-60-4438.
No. 9, No. 60-132785, No. 60-171143 and the like disclose ink jet recording sheets provided with a transparent ink receiving layer. These coated type inkjet recording media are improved from the general paper type inkjet paper in terms of dot diameter, dot shape, print density and color tone reproducibility, but the inks applied to these recording media There are many water-based inks that use water-soluble dyes,
When water or the like is applied to the image formed on the recording medium, there is a problem that the dye dissolves again and oozes out to significantly reduce the value of the recorded matter, and the high light transmittance of the ink receiving layer, There are drawbacks such as marked deterioration of the dye due to air permeability and the like.

Therefore, among these drawbacks, in order to improve the water resistance,
For example, JP-A-55-53591 shows an example of applying a water-soluble salt of a metal to the recording surface, and JP-A-56-84992 shows an example of a recording medium containing a polycationic polymer electrolyte on the surface. Further, JP-A-55-150396 discloses a method of applying a water-proofing agent that forms a lake with a dye in the ink after ink jet recording, and JP-A-56-58869 discloses coating a water-soluble polymer. After ink jet recording on a recording sheet, a method of making the water-soluble polymer insoluble to make it water resistant is further described in JP-A-56-99693 and 59-96987. JP-A-59-96988 discloses a method of making a dye insoluble by using a salt of the above, and JP-A-59-96988 discloses a method of making a dye by using a water-soluble salt of a metal.

However, these water resistance methods have a weak water resistance effect, or the water resistance agent reacts with the dye to cause some deterioration of the storage stability of the dye, thereby obtaining a balanced quality as a recording medium. It was difficult.

On the other hand, in order to improve the light fastness of a recorded image, for example, JP-A-54-68303, JP-A-54-85804, and JP-A-56-18151 disclose examples in which an ultraviolet absorber is added to an ink liquid. ing. However, these ultraviolet absorbers have a problem that the jetting stability of the ink is deteriorated and the solubility is low, so that they cannot be added in a large amount and the effect is small when added in a small amount. As another solution, it is possible to add a benzophenone-based or benzotriazole-based ultraviolet absorber to the ink jet recording sheet.
Proposed in 7-74193 and 57-87988,
These have problems that they have poor solubility in water and are difficult to use in large amounts, they are ineffective when used in small amounts, and when they are used by emulsification, they are affected by emulsifiers. As another solution, it has been proposed in JP-A-61-43563 and JP-A-61-47290 to incorporate a metal salt such as a weak acid salt of an alkali metal. However, there are problems such as a decrease in the activity, and a small amount is less effective.

In addition, the print quality is well balanced from the problem that each effect is hindered by the combined use with a water-proofing agent, etc., the ink absorbency, the image colorability are excellent, and the water resistance and the light resistance are also excellent. It was very difficult to obtain a recording medium.

(C) Problems to be Solved by the Invention The present invention is an inkjet recording medium in which a recording image is formed by ejecting an aqueous inkjet ink onto a recording medium to improve the water resistance and light resistance of the aqueous ink recorded image. However, it is to provide a recording medium having excellent image storability.

(D) Means for Solving the Problem That is, a recorded image is formed using an aqueous ink containing at least one water-soluble dye selected from direct dyes, acid dyes, basic dyes, reactive dyes and food dyes. An ink jet recording medium, wherein the recording medium contains a poly (dialkanolallylamine) derivative represented by the following general formula (I).

(In the formula, A is represented by the general formula (II) and / or (III).
A tertiary and / or quaternary dialkanol amino group, n
Is an integer from 10 to 1000) (R in the formula₁, R₂Is a hydroxyalkyl group R having 2 to 3 carbon atoms₃
Is hydrogen or an alkyl group having 1 to 2 carbon atoms, X Is a halogen
CH₃SO_Four , Or C₂H_FiveSO_Four Anion).

As an example of the method for producing the poly (dialkanolallylamine) derivative used in the present invention (hereinafter referred to as PAA derivative), an alkylene oxide is added to an aqueous polyallylamine solution having a predetermined molecular weight at 40 to 60 ° C. According to 60 ~
Examples thereof include a method of reacting a predetermined amount of an alkyl halide or a dialkyl sulfuric acid at 80 ° C. to obtain a target product of a tertiary ammonium, a partial quaternary ammonium salt, and a total quaternary ammonium salt.

As a method for producing a recording medium containing the PAA derivative of the present invention, when the pulp fiber is disintegrated and made into a slurry with a paper machine, a size press liquid containing the PAA derivative is immersed in a size press device provided in the middle or How to apply,
Furthermore, a PAA derivative is contained in the coating liquid, and this coating liquid is coated and dried using a normal coating device such as a roll coater, a reverse roll coater, an air knife coater, a blade coater, or a spray coater to contain the PAA derivative. There are a method of providing an ink receiving layer, a method of applying a dissolved PAA derivative on an ink receiving layer made of an ink absorbing pigment and an adhesive provided on a support, and the like. In this case, commonly used fillers, pigments, adhesives and other additives can be used in combination.

Examples of the filler or pigment that can be used in the present invention include light calcium carbonate, heavy calcium carbonate, kaolin, talc,
Calcium sulfate, barium sulfate, titanium oxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, synthetic amorphous silica, aluminum hydroxide, alumina, lithopone, etc. White inorganic pigments and organic pigments such as styrene plastic pigments, acrylic plastic pigments, microcapsules and urea resin pigments. Of these, synthetic amorphous silica is preferably used in the present invention.

The synthetic silica referred to in the present invention includes dry-process silica obtained by thermal decomposition of silicon tetrachloride, so-called white carbon such as metathesis precipitation products such as sodium silicate acid, carbon dioxide, and ammonium salt, and sodium silicate acid. Silica sol obtained through thermal decomposition or ion-exchange resin layer or colloidal silica obtained by heating and aging this silica sol, gelation of silica sol, primary particles of several millimicrons to several tens of millimicrons by changing the production conditions. Silica gel that became siloxane-bonded three-dimensional secondary particles, silica sol, sodium silicate, sodium aluminate, etc. as the starting material for the dish
A synthetic silicon compound mainly composed of silicon dioxide, such as a so-called synthetic molecular sieve produced by heating at ℃ to 120 ℃.

As the adhesive used in the present invention, for example, cellulose derivatives such as oxidized starch, etherified starch, carboxymethyl cellulose, hydroxyethyl cellulose, casein, gelatin, soybean protein, polyvinyl alcohol and its derivatives, maleic anhydride resin, ordinary Styrene
Butadiene copolymer, conjugated diene polymer latex such as methyl methacrylate-butadiene copolymer, acrylic polymer latex such as polymer or copolymer of acrylic acid ester and methacrylic acid ester, ethylene vinyl acetate copolymer, etc. Vinyl polymer latex, or functional group-modified polymer latex with a monomer containing a functional group such as carboxyl group of these various polymers, melamine resin,
Urea resin, water-based adhesive such as thermosetting synthetic resin, and synthetic resin adhesive such as polymethylmethacrylate, polyurethane resin, unsaturated polyester resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, alkyd resin, Used alone or in combination. These adhesives are used in an amount of 2 to 100 parts by weight, preferably 5 to 30 parts by weight, based on 100 parts by weight of the pigment, but the ratio thereof is not particularly limited as long as the amount is sufficient for binding the pigment. It is not something that will be done. However, it is not preferable to use 100 parts by weight or more of the adhesive because the film formation of the adhesive reduces the void structure or makes the void extremely small.

Other additives include pigment dispersants, thickeners, fluidity modifiers, defoamers, foam suppressors, mold release agents, foaming agents, penetrants, colored dyes, colored pigments, optical brighteners, and ultraviolet absorbers. Agents, antioxidants, preservatives, anti-bacterial agents, water-proofing agents and the like can also be appropriately added.

As the support, a sheet material such as paper or a thermoplastic resin film is used. In the case of paper, it is a paper without sizing agent or appropriately sized and may or may not contain a filler.

In the case of a thermoplastic film, polyester, polystyrene, polyvinyl chloride, polymethylmethacrylate,
A transparent film of cellulose acetate, polyethylene, polycarbonate or the like, or a white opaque film filled with a white pigment or finely foamed is used. As the white pigment to be filled, for example, titanium oxide, calcium sulfate,
Many things such as calcium carbonate, silica, clay, talc, zinc oxide are used.

Further, so-called laminated paper or the like in which these resin films are attached to the surface of paper or processed with a molten resin can be used. An undercoat layer or corona discharge machining may be applied to improve the adhesion between the resin surface and the ink receiving layer.

The sheet just coated on the support can be used as a recording sheet according to the present invention as it is, but it is also possible to give the surface smoothness through a roll nip under heating and / or pressure with, for example, a super calender or a gloss calender. It is possible. In this case, excessive processing by super calendering may reduce the ink absorbability due to the voids between the particles formed with care, and thus the processing level may be limited. The aqueous ink referred to in the present invention is a recording liquid composed of the following colorant, liquid medium, and other additives.

The colorant is a water-soluble dye such as a direct dye, an acid dye, a basic dye, a reactive dye or a food dye.

For example, CI Direct Black 2,4,9,11,14,17,19,22,27, 32,36,38,41,48,49,51,56, 62,71,74,75 , 77,78,80,105, 106,107,108,112,113,117, 132,146,154,194 CIDirect Yellow 1,2,4,8,11,12,24,26,27,28, 33,34,39,41,42,44,48,50, 51 , 58,72,85,86,87,88,98, 100,110 CIDirect Orange 6,8,10,26,29,39,41,49,51, 102 CIDirect Red 1,2,4,8,9 , 11,13,17,20,23, 24,28,31,33,37,39,44,46, 47,48,51,59,62,63,73,75, 77,80,81,83 , 84,85,90,94, 99,101,108,110,145,189, 197,220,224,225,226,227, 230 CIDirect Violet 1,7,9,12,35,48,51,90,94 CIDirect Blue 1,2,6,8,15,22,25 , 34,69, 70,71,72,75,76,78,80,81, 82,83,86,90,98,106,108, 110,120,123,158,163,165, 192,193,194,195,196,199, 200,201,202,203,207,218, 236,237,239,246,258 CIDirect Green 1,6,8,28,33 , 37,63,64 CIDirect Brown 1A, 2,6,25,27,44,58,95,100, 101,106,112,173,194,195, 209,210,211 CI Acid Black 1,2,7,16,17,24,26,28 as an acid dye , 31, 41,48,52,58,60,63,94,107, 109,112,118,119,121,122, 131,155,156 CIAcid Yellow 1,3,4,7,11,12,13,14, 17,18, 19,23,25,29,34,36,38,40, 41,42,44,49,53,55,59,61, 71,72,76,78,99,111,114, 116,122,135,161,172 CIAcid Orange 7,8,10,33,56,64 CIAcid Red 1,4,6,8,13,14,15,18,19,21, 26,27,30,32,34,35,37,40, 42,51,52,54,57,80,82,83, 85,87,88,89,92,94,97,106, 108,110,115,119,129,131, 133,134,135,154,155,172, 176,180,184,186,187,249, 254,256,317,318 CIAcid Violet 7,11,15,34,35, 41,43,49,75 CIAcid Blue 1,7,9,22,23,25,27,29,40, 41,43,45,49,51,53,55,56, 59,62,78, 80,81,83,90,92, 93,102,104,111,113,117, 120,124,126,145,167,171, 175,183,229,234,236 CIAcid Green 3,12,19,27,41,9,16,20,25 CIAcid Brown 4,14 CIBasic Black 2 as basic dye , 8 CIBasic Yellow 1,2,11,12,14,21,32,36 CIBasic Orange 2,15,21,22 CIBasic Red 1,2,9,12,13,37 CIBasic Violet 1,3 , 7,10,14 CIBasic Blue 1,3,5,7,9,24,25,26,28,29 CIBasic Green 1,4 CIBasic Brown 1,12 CI Reactive Black 1,2 as a reactive dye 3,5,6,8,12,14 CIReactive Yellow 1,2,3,13,14,15,17 CIReactive Orange 2,5,7,16,20,24 CIReacti ve Red 6,7,11,12,15,17,21,23, 24,35,36,42,63,66 CIReactive Violet 2,4,5,8,9 CIReactive Blue 2,5,7, 12,13,14,15,17,18, 19,20,21,25,27,28,37,38, 40,41 CIReactive Green 5,7 CIReactive Brown 1,7,16 Further as food dye CIFood Black 2 CIFood Yellow 3,4,5 CIFood Red 2,3,7,9,14,52,87,92,94, 102,104,105,106 CIFood Violet 2 CIFood Blue 1,2 CIFood Green 2, 3 and so on.

The liquid medium of the water-based ink includes water and various water-soluble organic solvents such as methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, and t-butyl alcohol.
ert-butyl alcohol, isobutyl alcohol and other C1-4 alkyl alcohols; dimethylformamide, dimethylacetamide and other amides; acetone,
Ketones or ketone alcohols such as diacetone alcohol; ethers such as tetrahydrofuran and dioxane; polyalkylene glycols such as polyethylene glycol and polypropylene glycol; ethylene glycol, propylene glycol, butylene glycol, triethylene glycol, 1,2,6- Alkylene glycols having 2 to 6 alkylene groups such as hexanetriol, thiodigol, hexylene glycol and diethylene glycol; polyhydric alcohols such as glycerin, ethylene glycol methyl ether, diethylene glycol methyl (or ethyl) ether and triethylene glycol monomethyl ether Lower alkyl ethers and the like can be mentioned.

Among these many water-soluble organic solvents, polyhydric alcohols such as diethylene glycol and lower alkyl ethers of polyhydric alcohols such as triethylene glycol monomethyl ether and triethylene glycol monoethyl ether are preferable.

Other additives include, for example, PH regulators, sequestering agents,
Examples thereof include antifungal agents, viscosity modifiers, surface tension modifiers, wetting agents, surfactants, and rust preventives.

The inkjet suitability was measured by the following method.

The color density is Cyan (C), Magenta (M), with Sharp Inkjet Color Image Printer (IO-720).
For the images obtained by solid printing with each of the yellow (Y) and black (Bk) inks, the density measured using a Macbeth densitometer RD514 was used.

Light resistance is based on Canon inkjet printer (A-12
Xenon fade meter (Suga Test Instruments Co., Ltd.) for the image part obtained by solid printing with Bk ink using 10)
Manufactured by FAL-25X-HCL type) at 40 ° C, 60%, illuminance 41w / m ² 4
The sensory chromaticity (L ^* a ^*) before and after irradiation with xenon light or exposure to sunlight for 0 hours or exposure to direct sunlight for 24 hours
b ^* ) is measured using a color difference meter (CR-100, manufactured by Minolta Camera), and the difference in sensory chromaticity before and after irradiation (ΔL ^* Δa ^* Δb
^The dye ΔE was obtained from ^* ). This value was shown as the amount of discoloration.

Ozone resistance is based on Canon inkjet printer (A
-1210), the image part obtained by solid printing with Bk ink was exposed to an ozone generator (manufactured by Mitsubishi Electric, OS-1) for 5 minutes in an air flow with an ozone concentration of 3 g / m ³ to remove ozone. The color difference ΔE before and after the exposure was determined in the same manner as the light resistance, and this value was shown as the amount of discoloration. As for the amount of discoloration and fading, the smaller the numerical value is, the less the discoloration and fading is, and the better the colorfastness is.

The water resistance is the same as that of Canon ink jet printer, but the image part obtained by solid printing with each ink of C, M, Y and Bk is immersed in running water at 30 ° C for 3 minutes, and the density before and after immersion is Macbeth Densit It was measured with a meter RD514, and the percentage obtained by dividing the concentration after immersion by the concentration before immersion was taken as the water resistance value.
The higher the value, the better the water resistance.

The ink absorption speed is determined by using a Sharp or Canon inkjet printer to feed the paper immediately after solid printing of red printing (magenta + yellow) (after about 1 second), and then contacting it with a paper press roll or finger, etc. It was judged by whether or not it appeared.

(E) Action The poly (dialkanolallylamine) derivative according to the present invention acts as a water resistance agent for the water-soluble dye due to its cationic property. Further, the derivative also works well on the light resistance of a printed image and the storage stability (particularly the light resistance and ozone resistance of black printing).

Although a quaternary ammonium salt has been widely proposed as a waterproofing agent for a water-soluble dye in an inkjet recording medium, and a dialkanolamino-modified product is also proposed.
The water resistance was good, but the light resistance was poor, or vice versa.

The effect of the present invention is that the molecular weight is moderate,
Its cationicity can be freely changed by a combination of tertiary and quaternary, and the aggregation of pigments such as silica can be appropriately designed, and an excellent effect can be exhibited in fixing the water-soluble dye. Further, with respect to light resistance, the fading property is suppressed by a combined effect such as adsorption to silica and a dye and reduction of terminal groups with amino alcohols.

Therefore, the present invention, by the complex combined action as described above,
It has been achieved, and is not an application of a conventionally known one, but a completely new concept.

(F) Examples Examples of the present invention will be described below, but the invention is not limited to these examples. The parts and% shown in the examples mean parts by weight and% by weight. The PAA derivatives used in Examples and Comparative Examples are shown in Table 1.

Example 1 A pulp slurry consisting of 80 parts of LBKP having a water content of 370 ml CSF and 20 parts of NBKP having a water content of 400 ml was mixed with 20 parts of talc and cationic starch (Cato).
F, made by Oji National Co., Ltd.) 0.5 part was added to make paper with a basis weight of 65 g / m ² using a Fourdrinier paper machine. At the time of paper making, polyvinyl alcohol (PVA117, made by Kuraray Co., Ltd.) 2%, white carbon (Nipsil LP, manufactured by Nihon Silica Co., Ltd.), a size press liquid containing 4% of a PAA derivative of compound 3 in Table 1 6
The recording paper of Example 1 was made to adhere by 0 g / m ² and dried and finished through a machine calendar. The results of measuring the ink jet suitability of this recording paper are shown in Table 2.

Comparative Example 1 A recording paper of Comparative Example 1 was obtained in the same manner as in Example 1 except that the PAA derivative was removed from the size press liquid used in Example 1. The results of measuring the ink jet suitability of this recording paper are shown in Table 2.

Examples 2-5 80 parts LBKP with a water degree of 370 ml CSF, 20 parts NBKP with a water degree of 400 ml CSF, 13 parts heavy calcium carbonate, 1 part cationic starch, 0.08 part of an alkyl ketene dimer sizing agent (Harcon W, manufactured by Dick Hercules) and a polyalkylene. from a slurry consisting of 0.4 parts of polyamine epichlorohydrin resin, and papermaking raw paper having a basis weight of 68 g / m ² by a Fourdrinier paper machine, a size coat base paper 2 g / m ² deposited so oxidized starch in solids with a press device during papermaking Manufactured. The Steckigt sizing degree of this base paper was 21 seconds.

As a coating liquid, 100 parts of synthetic silica (Mizukasil P78D, manufactured by Mizusawa Chemical Industry Co., Ltd.), 30 parts of polyvinyl alcohol (PVA117, manufactured by Kuraray Co., Ltd.), and PAA represented by compounds 4 to 7 in Table 1
A liquid with a solid content of 18% consisting of 20 parts of each derivative was prepared, and the coated base paper surface was coated with a wire rod to a dry solid content of 10 g / m ² and dried, and then lightly super-calendered to finish. The recording papers of Examples 2 to 5 were used.
Table 2 shows the results of measuring the inkjet suitability of these recording papers.

Comparative Example 2 A recording paper of Comparative Example 2 was prepared in exactly the same manner as in Examples 2 to 5, except that the PAA derivative was removed from the coating solutions used in Examples 2 to 5. The results of measuring the ink jet suitability of this recording paper are shown in Table 2.

Comparative Example 3 Table 1 was used instead of the PAA derivative of the coating liquid used in Examples 2 to 5.
A recording paper of Comparative Example 3 was prepared in exactly the same manner as in Examples 2 to 5 except that the compound 8 was used. The results of measuring the ink jet suitability of this recording paper are shown in Table 2.

Examples 6 and 7 As a coating liquid, a liquid having a solid content of 20% consisting of 100 parts of synthetic silica (Cyroid 74, manufactured by Fuji Tevison) and 30 parts of polyvinyl alcohol (PVA117) was prepared and used in Examples 2 to 5. A base paper having an ink-receiving layer was prepared by coating and drying the same coated base paper with an air knife coater to a dry solid content of 8 g / m ² .

Separately, synthetic silica (Finesil X37
(B), manufactured by Tokuyama Soda Co., Ltd.) 100 parts, polyvinyl alcohol (PVA117) 50 parts, and a PAA derivative represented by each of the compounds 1 and 2 in Table 1 having a solid content of 10% were prepared, and the above base was prepared. The surface of the paper was coated and dried so that the dry solid content was 5 g / m ^2, and then lightly calendered to finish it, and the recording papers of Examples 6 and 7 were obtained. Table 2 shows the results of measuring the inkjet suitability of these recording papers.

Comparative Example 4 Examples 6 and 7 except that polyalkylene polyamine dicyandiamide ammonium salt condensate (Neofix RP-70, manufactured by Nichika Chemical Co., Ltd.) was used in place of the PAA derivative of Examples 6 and 7.
The recording paper of Comparative Example 4 was obtained in exactly the same manner as. The results of measuring the ink jet suitability of this recording paper are shown in Table 2.

Comparative Example 5 A recording paper of Comparative Example 5 was prepared in exactly the same manner as in Examples 6 and 7 except that the PAA derivative of Examples 6 and 7 was omitted. The results of measuring the ink jet suitability of this recording paper are shown in Table 2.

Comparative Example 6 Comparative Example 6 was performed in the same manner as in Examples 6 and 7 except that polyallylamine hydrochloride (PAA-HCl manufactured by Nitto Boseki Co., Ltd.) was used instead of 20 parts of each PAA derivative used in Examples 6 and 7. Got the recording paper (G) Effect of the Invention In the ink jet recording medium containing the poly (dialkanolallylamine) derivative according to the present invention in the recording medium, not only the water resistance of the recorded image is obtained but also the color property is improved, and further the light resistance of the black printed image is improved. And ozone resistance are significantly improved.

Claims (1)

[Claims] 1. Direct dyes, acid dyes, basic dyes, reactive dyes
At least one water-soluble dye among dyes and food dyes
To form a recorded image using a water-based ink containing
In a jet recording medium, the recording medium has the following general formula:
Poly (dialkanol allylamine) represented by (I)
Inkjet recording characterized by containing a derivative
Medium.(In the formula, A is represented by the general formula (II) and / or (III).
A tertiary and / or quaternary dialkanol amino group, n
Is an integer from 10 to 1000) (R in the formula₁, R₂Is a hydroxyalkyl group R having 2 to 3 carbon atoms₃
Is hydrogen or an alkyl group having 1 to 2 carbon atoms, X Is a halogen
CH₃SO_Four , Or C₂H_FiveSO_Four Anion).