JP2002370441A - Intermediate transfer type ink jet recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a high grade image with neither bleeding nor feathering on a transfer medium, to transfer a high quality inked image obtained under a low pressure on the transfer medium, and also to obtain the inked image excellent in water resistance and in wear resistance on the recording medium. SOLUTION: In an intermediate transfer type ink jet recording method, prior to a first ink, a second ink is recorded onto an intermediate transfer medium by an ink jet recording method and next, the first ink is given so as to form an aggregate of components aggregating through the ionic action between the first ink coloring material on the intermediate transfer medium and the second ink in order to transfer the image to the recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an intermediate transfer type ink jet recording method.

[0002]

2. Description of the Related Art A conventional ink jet recording system in which a recording image is written by discharging ink droplets onto a recording medium is excellent in that the mechanism is simple and no noise is generated. For example, there is a problem in print quality that a printing state is different due to a difference in paper quality of a transfer paper, and there is a problem that a wet recorded image is disturbed when the transfer paper is discharged.

To solve such a problem, Japanese Patent Laid-Open No.
No. 849 discloses a method in which ink droplets are once ejected onto a transfer medium, and most of the water in the ink droplets is evaporated to transfer the concentrated ink onto a recording medium such as paper. However, the above method has a problem that the transfer pressure is increased. In other words, even when the amount of heat of the heater is set to an appropriate value and the concentration state is specified, when scanning with a single nozzle head or a multi-nozzle head, the time from ink discharge to transfer differs depending on the location, and the difference in the concentration state is different. Will occur. Here, the relationship between the concentrated state of the ink image and the transfer pressure is such that the transfer pressure tends to increase as the ink image is concentrated, so it is necessary to set the pressure value according to the maximum concentrated state of the ink image. And required excessive pressure. Furthermore, the concentrated state of the ink image varies depending on the print pattern of the ink image, in other words, the amount of ink per unit area, and an excessive transfer pressure is required.

In order to solve such a problem, Japanese Patent Laid-Open No.
In the embodiment in JP-A-58664, an intermediate transfer medium is provided with an anionic ion-exchange resin membrane, and an ammonium salt type dye is used as an ink. Decreases,
This is to improve the releasability of the ink from the intermediate transfer medium, that is, the transferability to paper. However, the use of the dye has caused the image to have no water resistance and to have different ink bleeding before being transferred to paper.

In one embodiment of Japanese Patent Application Laid-Open No. 6-240195, there is provided a reactive ink system containing a base ink component having a color material and a crosslinkable component, and a cross-linking agent. The purpose of this is to transfer the applied ink layer from the intermediate transfer medium to a receiving device. In this method, since the crosslinking agent is applied to the entire surface, there is a problem that, for example, the texture of plain paper is applied and the recording cost is increased.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to solve such a problem. It is an object of the present invention to form a high-quality image without bleeding and feathering on a transfer medium, and to form the image under a low pressure. Is to transfer a high-quality ink image obtained on a transfer medium onto a recording medium, and to obtain an ink image having excellent water resistance and abrasion resistance on the recording medium.

[0007]

The above object is achieved by the present invention described below. That is, the present invention, in the intermediate transfer type inkjet recording method, as the first ink,
At least a coloring material, an ink containing a water-soluble organic solvent and water, as a second ink, substantially does not contain a coloring material,
Using an ink containing at least a component that is aggregated by an ionic effect with the first ink, water and a water-soluble organic solvent, prior to the first ink, the second ink is formed on an intermediate transfer medium by an inkjet recording method. Recording, then applying the first ink, forming on the intermediate transfer medium an image of the color material of the first ink and the aggregate of the component that aggregates due to the ionic action of the second ink, and forms the image on the recording medium In the intermediate transfer type inkjet recording method for transferring an image, an intermediate transfer type inkjet recording method is provided, wherein the applied amount of the second ink is smaller than the applied amount of the first ink.

Further, the present invention provides the above-mentioned recording method, wherein the second ink further contains a water-insoluble resin having a minimum film-forming temperature of 30 ° C. or less, and the first ink further comprises a minimum film-forming temperature. The present invention provides the above-mentioned recording method containing a water-insoluble resin of 30 ° C. or lower, and the above-mentioned recording method of heating an intermediate transfer medium on which an image is formed.

[0009]

Next, the present invention will be described in more detail with reference to preferred embodiments. The main embodiments of the recording method of the present invention are as follows: (1) The first ink to be applied based on image information
In the case where the second ink is applied to all the pixels to which the first ink is applied using the second ink for one pixel, the ejection amount of the first ink is compared with the ejection amount of the first ink. The ejection amount of the second ink is reduced. (2) In the case where the discharge amount of the second ink is the same as the discharge amount of the first ink, one pixel to which the first ink is applied and one pixel An embodiment in which ink is applied by thinning out is given. However, isolated dots do not fall into this category.

By reducing the amount of the second ink applied prior to the first ink in this manner, the image on the intermediate transfer medium and, consequently, the image transferred on the recording medium is of high quality. Become something. If the applied amount of the second ink is larger than the applied amount of the first ink, for example, a uniform image cannot be obtained in a solid image, and the amount of ink on the intermediate transfer medium increases. There are also adverse effects such as flow and color mixing. Although the embodiments as described above are mentioned, if the applied amount of the second ink is smaller than the applied amount of the first ink, the present invention is applied to the above embodiments (1) and (2). Not limited.

In the present invention, examples of the combination of components that coagulate by the ionic action of the first ink and the second ink include: (1) a first ink / anionic substance and a component that coagulates the second ink. / Cationic substance (2) First ink / Cationic substance Aggregate component of second ink / Anionic substance. Aggregates are formed on the intermediate transfer medium by this ionic action, whereby bleeding between colors (bleeding) on the intermediate transfer medium and dripping of ink at a high duty can be prevented. And the image transferred to a recording medium is excellent in water resistance and high in quality.

In the first ink or the second ink of the present invention, a water-insoluble resin having a minimum film formation temperature (MFT) of 30 ° C. or less can be arbitrarily mixed. MFT
By further blending a water-insoluble resin having a temperature of 30 ° C. or lower, it is possible to further impart the scratch resistance of the recorded image.

It is also possible to additionally heat the intermediate transfer medium. By heating the aggregate of the first ink and the second ink on the intermediate transfer medium, it is possible to transfer the water to a recording medium in a state where water is volatilized to some extent, and to improve the fixing property of the ink image. Can be further improved.

The coloring material used in the first ink of the present invention includes a direct dye, an acid dye, a basic dye, a reactive dye, an edible dye, a disperse dye, an oil dye, carbon black or an inorganic or organic pigment. Such as dispersions or microencapsulation, surface treatment type pigments having an ionic functional group introduced by performing a surface treatment, and the like,
For example, conventionally known ones can be used without limitation. For example, as the water-soluble dye having an anionic group, for example, a water-soluble acid dye, a direct dye, or a reactive dye having an anionic group described in COLOR INDEX can be used. In addition, even those not described in the color index can be used without particular limitation as long as they have an anionic group such as a sulfone group and a carboxyl group. Here, the water-soluble dyes include those having pH dependency in solubility. In addition, cationic dyes and pigments can be used.

Specifically, among the anionic dyes, acidic dyes include, for example, C.I. I. Acid Black 1,
2, 7, 16, 17, 24, 26, 28, 31, 41,
48, 52, 58, 60, 63, 94, 107, 10
9, 112, 118, 119, 121, 122, 13
1, 155, 156; C.I. I. Acid Yellow 1,
3, 4, 7, 11, 12, 13, 14, 17, 18, 1
9,23,25,29,34,36,38,40,4
1, 42, 44, 49, 53, 55, 59, 61, 7
1, 72, 76, 78, 79, 99, 111, 114,
116, 122, 135, 142, 161, 172;
C. I. Acid Orange 7, 8, 10, 19, 20,
24, 28, 33, 41, 45, 51, 56, 64;
C. I. Acid Red 1, 4, 6, 8, 13, 14,
15, 18, 19, 21, 26, 27, 30, 32, 3,
4, 35, 37, 40, 42, 51, 52, 54, 5
7, 80, 82, 83, 85, 87, 88, 89, 9
2, 94, 97, 106, 108, 110, 111, 1
14, 115, 119, 129, 131, 133, 13
4, 135, 143, 144, 152, 154, 15
5,172,176,180,184,186,18
7, 249, 254, 256, 289, 317, 31
8; I. Acid violet 7, 11, 15, 3
4, 35, 41, 43, 49, 51, 75; I. Acid Blue 1, 7, 9, 15, 22, 23, 25, 2
7, 29, 40, 41, 43, 45, 49, 51, 5
3, 55, 56, 59, 62, 78, 80, 81, 8
3, 90, 92, 93, 102, 104, 111, 11
3, 117, 120, 124, 126, 138, 14
5, 167, 171, 175, 183, 229, 23
4, 236, 249; I. Acid Green 3,
9, 12, 16, 19, 20, 25, 27, 41, 4
4; I. Acid Brown 4, 14, etc., but are not limited thereto.

Examples of the direct dye include C.I. I. Direct Black 2, 4, 9, 11, 14, 17, 19,
22, 27, 32, 36, 38, 41, 48, 49, 5
1, 56, 62, 71, 74, 75, 77, 78, 8
0, 105, 106, 107, 108, 112, 11
3, 117, 132, 146, 154, 168, 17
1, 194; C.I. I. Direct Yellow 1, 2, 4,
8, 11, 12, 24, 26, 27, 28, 33, 3,
4, 39, 41, 42, 44, 48, 50, 51, 5
8, 72, 85, 86, 87, 88, 98, 100, 1
10, 127, 135, 141, 142, 144;
I. Direct Orange 6, 8, 10, 26, 29, 4
1, 49, 51, 102; C.I. I. Direct Red 1, 2, 4, 8, 9, 11, 13, 15, 17, 20,
23, 24, 28, 31, 33, 37, 39, 44, 4
6, 47, 48, 51, 59, 62, 63, 73, 7
5, 77, 80, 81, 83, 84, 85, 87, 8
9, 90, 94, 95, 99, 101, 108, 11
0, 145, 189, 197, 220, 224, 22
5, 226, 227, 230, 250, 254, 25
6, 257; I. Direct Violet 1, 7,
9, 12, 35, 48, 51, 90, 94; I. Direct Blue 1, 2, 6, 8, 15, 22, 25, 3
4, 69, 70, 71, 72, 75, 76, 78, 8
0, 81, 82, 83, 86, 90, 98, 106, 1
08, 110, 120, 123, 158, 163, 16
5, 192, 193, 194, 195, 196, 19
9, 200, 201, 202, 203, 207, 21
8, 236, 237, 239, 246, 258, 28
7; I. Direct Green 1, 6, 8, 28, 3
3, 37, 63, 64; I. Direct Brown 1, 2, 6, 25, 27, 44, 58, 95, 100,
101, 106, 112, 173, 194, 195, 2
09, 210, 211, etc., but are not limited to these.

As the reactive dye, for example, C.I. I. Reactive blacks 1, 3, 5, 6, 8, 12, 14;
C. I. Reactive Yellow 1, 2, 3, 13, 1
4, 15, 17; I. Reactive Orange 2,
5, 7, 16, 20, 24; C.I. I. Reactive Red 6, 7, 11, 12, 15, 17, 21, 23, 2
4, 35, 36, 42, 63, 66, 84, 184;
C. I. Reactive violet 2, 4, 5, 8,
9; I. Reactive Blue 2, 5, 7, 12, 1
3, 14, 15, 17, 18, 19, 20, 21, 2
5, 27, 28, 37, 38, 40, 41; I. Reactive Green 5, 7; C.I. I. Reactive Brown 1, 7, 16 and the like, but are not limited thereto.

Examples of food colors include C.I. I. Food black 1, 2; I. Food yellow 2, 4,
5; I. Food Red 2, 3, 7, 9, 14, 5
2,87,92,94,102,104,105,10
6; I. Food violet 2; I. Food blue 1, 2; I. Food Green 2, 3 and the like, but are not limited thereto.

Examples of the cationic dye include C.I. I. Basic Yellow 1, 11, 13, 19, 21, 25, 3
3, 36, C.I. I. Basic Red 1, 2, 9, 1
2, 13, 38, 39, 92, C.I. I. Basic Blue 1, 3, 5, 9, 19, 24, 25, 26, 28, 4
5, 54 and 65 and the like. The content of the coloring material in the ink is determined by the characteristics required for the ink and the like, but a general concentration of about 0.1 to 20% by weight can be used.

As the water-soluble organic solvent component of the ink, for example, water or a mixture of water and a water-soluble organic solvent is suitably used. Specific examples of the water-soluble organic solvent include, for example, dimethylformamide, dimethylacetamide Amides such as acetone; ketones such as acetone; 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-hexanetriol, thiodiglycol,
Alkylene glycols such as hexylene glycol and diethylene glycol; lower alkyl ethers of polyhydric alcohols such as ethylene glycol methyl ether, diethylene glycol monomethyl ether, and triethylene glycol monomethyl ether; ethanol, isopropyl alcohol, n-butyl alcohol, isobutyl alcohol Monohydric alcohols; glycerin; N-methyl-2-pyrrolidone; 1,3-dimethyl-2-imidazolidinone; triethanolamine; sulfolane; dimethylsulfoxide; Is done. The content of the water-soluble organic solvent in the ink is not particularly limited, but is, for example, 1 to 50% by weight, and more preferably 2 to 30% by weight.

Suitable physical properties of the ink include, for example,
Around 25 ° C., pH 3-12, surface tension 10-60
dyne / cm, more preferably 10 to 40 dyne /
cm and a viscosity of 1 to 30 cps.

In the second ink of the present invention, the component that coagulates with the first ink includes two kinds of a cationic substance and an anionic substance. Examples of the cationic substance include a cationic metal salt, a cationic metal oxide, a cationic inorganic polymer compound, a cationic organic compound, and the like. One of these may be used alone, or one of them may be used. Two or more kinds can be used in combination.

Examples of the cationic metal salt include polyvalent metal salts such as aluminum chloride, barium chloride, nickel chloride, magnesium chloride, and aluminum hydroxide. Examples of the cationic inorganic oxide include alumina. Examples of the cationic inorganic polymer include smectite, polyaluminum chloride, and polyaluminum hydroxide.
Examples of the cationic organic compound include an organic amine salt, an organic polymer amine salt, a cationic organic polymer compound, an organic oligomer, and a cationic organic metal compound.

Specific examples of the organic amine salt include compounds of primary, secondary or tertiary amine salt type such as hydrochloride salts such as laurylamine, cocoamine, stearylamine and rosinamine, and acetate salts; lauryltrimethylammonium Chloride, lauryldimethylbenzylammonium chloride, benzyltributylammonium chloride,
Quaternary ammonium salt-type compounds such as benzalkonium chloride; pyridinyl salt-type compounds such as cetylpyridinium chloride and cetylpyridinium bromide; imidazoline-type cationic compounds such as 2-heptadecenyl-hydroxyethylimidazoline; dihydroxyethylstearylamine and the like Examples thereof include an ethylene oxide adduct of a higher alkylamine.

Specific examples of the organic high-molecular amine salt include hydrochlorides such as polyallylamine, polyvinylamine and polyamine sulfone, acetates, oxalates and the like. Specific examples of the cationic organic polymer compound and the organic oligomer include, for example, a homopolymer or a copolymer having an alcoholamine ester such as acrylic acid or methacrylic acid or an alcohol ammonium salt type ester as a constituent monomer. Can be.

Specific examples of the cationic organometallic substance include:
For example, mixed valence ferrosenylene compounds such as bisferrosenylene, polyferrosenylene, and polyvinylferrosenylene, and phosphonium compounds such as tetramethylphosphonium iodide are exemplified.

Examples of the anionic substance include inorganic acids or salts thereof, anionic organic compounds, anionic metal oxides, and anionic inorganic high molecular compounds. Examples of the inorganic acids and salts thereof include sulfuric acid, phosphoric acid, and salts thereof. Examples of the anionic organic compound include organic-basic acids such as stearic acid and dodecylbenzenesulfonic acid and salts thereof, succinic acid, and naphthalenedisulfonic acid. Dibasic acids such as acids and salts thereof, polyacrylic acid, alginic acid,
Polybasic acids such as formalin condensates of naphthalenesulfonic acid and salts thereof. Examples of the anionic inorganic high molecular compound include polyphosphoric acid and the like.

The MFT that can be added to the ink of the present invention is 30.
The water-insoluble component at a temperature of not more than 0 ° C is not particularly limited as long as the MFT of acrylic, urethane, polyester, vinyl or the like is 30 ° C or less. The water-insoluble component may be emulsified when added to water to form a resin emulsion, or may be separated into two layers. The former can be used as it is, and the latter uses a surfactant, an aqueous resin, or the like, or performs microencapsulation, etc., in order to stably disperse it in an aqueous system, and performs colloidal stable in an aqueous system. Desirably in the form of a dispersion.

As the ink-jet system for intermediate transfer recording of the present invention performed using the first and second inks as described above, any conventionally known system may be used. As an example, as shown in FIGS. 1 and 2, an inkjet head 2 and a backup roller 4 as a transfer unit are arranged from a rotation direction upstream side around a transfer drum 1 as an intermediate transfer medium.
Are sequentially arranged. A heating unit (not shown) is arranged inside the transfer drum 1 to control the surface temperature of the transfer medium 1. The first and second inks are supplied from the ink tanks 3 and 3 to the head 2, and the first and second inks are sequentially discharged from the head 2 as described above, and the first and second inks are discharged onto the surface of the intermediate transfer medium 2. Droplets of the first and second inks are applied to form an ink image 5 on the surface of the intermediate transfer medium.
The ink image 5 is heated by a heating means incorporated in the transfer medium 1, and a considerable portion of the ink liquid medium is removed by evaporation, and the ink image 5 loses fluidity. According to the rotation of the transfer drum 1 while the ink image 5 is not completely dried,
Sent between the transfer drum 1 and the backup roller 4,
The ink image 5 is transferred to a recording medium 6 such as paper by the pressure of the backup roller 4. The above example is one example, and the present invention is not limited to this example.

The ink jet recording system used in the present invention may be any of the conventionally known systems.
As a preferable method, there is an ink jet recording method in which thermal energy corresponding to a recording signal is applied to ink in a chamber of a recording head and droplets are generated by the energy.

[0031]

Next, the present invention will be described more specifically with reference to examples and comparative examples. In the following description, “parts” or “%” is based on weight unless otherwise specified. First, a method for producing a pigment dispersion that can be used in the present invention will be described. Pigment Dispersion 1 2 parts of poly-N, N'-dimethyl-3,5-methylenepiperidinium salt (molecular weight = 3700), 5 parts of diethylene glycol, and 78 parts of ion-exchanged water are mixed, and heated to 70 ° C. in a water bath. Warm and completely dissolve the resin. This solution has a specific surface area of 180 m ² / g and a DBPA of 122 m ^2.
After 15 parts of 1/100 g of carbon black was added and premixed for 30 minutes, dispersion treatment was performed under the following conditions.

Dispersing machine: Sand grinder (made by Igarashi Kikai) Grinding media: zirconia beads 1 mm diameter Grinding media filling rate: 50% (volume) Grinding time: 3 hours Further, centrifugation (12000 rpm, 20 minutes) is performed, and coarse The particles were removed to obtain Dispersion 1. This is a cationic resin-dispersed carbon black.

Pigment dispersion 2 300 g of acidic carbon black MA-8 (manufactured by Mitsubishi Chemical Corporation)
Was thoroughly mixed with 1,000 ml of water, and 450 g of sodium hypochlorite (effective chlorine concentration: 12%) was added dropwise.
Stirred at ~ 105 ° C for 8 hours to oxidize. The obtained slurry was applied to Toyo Filter Paper No. After filtering with 2, the product was washed well with water to remove by-product salts. Put the obtained wet cake in water 3,000
re-dispersed, purified and concentrated using a reverse osmosis membrane,
A pigment dispersion liquid 2 having a pigment concentration of 10% was obtained. As a result, an anionic self-dispersion type carbon black in which a -COONa group was bonded to the surface of the carbon black was obtained, and the carbon black was dispersed in the pigment dispersion 2 in a favorable state.

Next, combinations of the first ink and the second ink used in Examples and Comparative Examples of the present invention are shown below. The ink was mixed at the following mixing ratio, and then a membrane filter with a pore diameter of 1 μm (manufactured by Fuji Film)
And filtered.

Example 1 <First Ink> Black Ink C.I. I. Food Black 2 3 parts ・ Glycerin 10 parts ・ Diethylene glycol 10 parts ・ Isopropyl alcohol 4 parts ・ Water remainder ・ Surface tension 45 dyne / cm

[0036]

[0037]

[0038]

[0039]

[Example 2] <First ink> Black ink / pigment dispersion liquid 15 parts-glycerin 10 parts-diethylene glycol 10 parts-isopropyl alcohol 4 parts-water remaining part-surface tension 45 dyne / cm-average particle diameter 120 nm

[0041]

[0042]

[0043]

[0044]

[Embodiment 3]

[0046]

[0047]

[0048]

[0049]

Comparative Example 1 <First Ink> Black Ink C.I. I. Food Black 2 3 parts ・ Glycerin 10 parts ・ Diethylene glycol 10 parts ・ Isopropyl alcohol 4 parts ・ Water remainder ・ Surface tension 45 dyne / cm

[0051]

[0052]

[0053]

<Second ink> None

Comparative Example 2 <First Ink> Black Ink C.I. I. Food Black 2 3 parts ・ Glycerin 10 parts ・ Diethylene glycol 10 parts ・ Isopropyl alcohol 4 parts ・ Water remainder ・ Surface tension 45 dyne / cm

[0056]

[0057]

[0058]

[0059]

Next, the recording method of the present invention will be described. [Example 1] The ejection amount per dot of the first ink was 16 ng / 600 dpi, and the ejection amount of the second ink was 8 ng / 600 dpi per dot.
It was a hit. For each dot on which the first ink was recorded based on the image information, the dot of the second ink was all recorded first.

[Embodiments 2 and 3] The ejection amounts of the first ink and the second ink are both set to 16 ng per 600 dpi, and the second ink is applied to the image area where the first ink is recorded based on the image information. The ink was recorded in a pattern in which the ink was thinned out to 50% zigzag.

Comparative Example 1 Printing was performed in the same manner as in Example 1 except that only the first ink was used. [Comparative Example 2] The discharge amount per dot of the first ink was 16 ng / 600 dpi, and the discharge amount of the second ink was 30 ng / 600 dp per dot.
i. For each dot on which the first ink was recorded based on the image information, the dot of the second ink was all recorded first. In Example 4, the intermediate transfer medium was always heated to 60 ° C. in the configuration of Example 3.

The results of this example and comparative example are shown in Table 1 below. Hereinafter, the expression “printed” is defined as an operation including transfer of an image formed on an intermediate transfer medium to a recording medium. The recording medium used was Canon PB paper (plain paper).

"Color bleed" Each color was printed so as to be adjacent to each other, and the degree of ink bleeding between the colors was evaluated. ；: No bleeding. ×: Much bleeding.

[Character Quality] Characters were printed in each color, and the sharpness of the edge was evaluated. ；: The edge is very sharp. ×: Bleeding on the beard occurs along the fiber of the paper, and the edge is very dirty.

[Scratch resistance] A solid image of 1 inch × 1 inch was printed, and the printed surface was touched with a finger to evaluate the degree of stain on the printed surface. A: No contamination at all. ；: Slightly stained, but not so noticeable. Δ: considerable contamination occurs.

"Fixability" Characters were continuously printed on a plurality of sheets, and the ink transfer to the back side of the print was evaluated. A: No set-off. ○: There is a slight set-off, but I do not mind much. Δ: Set-off occurs quite a bit and is bothersome.

A "water-resistant" character was printed, the printed surface was rubbed with tap water, and the outflow of the ink was evaluated. ○: No outflow. ×; considerable flow occurred.

[Image Uniformity] Solids of 1 inch × 1 inch were printed, and the uniformity of the solids was evaluated. ；: Very uniform. X: non-uniform.

"Flow of ink on transfer medium" A: No problem. Δ: Inflow of ink occurs at a high printing duty such as a secondary color. X: very much ink flow out

[0071]

[0072]

According to the present invention as described above, a high-quality image without bleeding or feathering is formed on a transfer medium, and a high-quality ink image obtained on the transfer medium under a low pressure is formed. The ink is transferred onto a recording medium, and an ink image having excellent water resistance and excellent scratch resistance can be obtained on the recording medium.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an intermediate transfer method.

FIG. 2 is a diagram illustrating an intermediate transfer method.

[Explanation of symbols]

 1: intermediate transfer medium 2: ink jet head 3: ink tank 4: backup roller 5: ink image 6: recording medium

Claims (4)

[Claims] In an intermediate transfer type ink jet recording method, an ink containing at least a coloring material, a water-soluble organic solvent and water as a first ink, and substantially no coloring material as a second ink. Using an ink containing at least a component that is aggregated by an ionic action with the first ink, water and a water-soluble organic solvent, prior to the first ink, the second ink is applied to an intermediate transfer medium by an inkjet recording method. Recording, then applying the first ink, forming on the intermediate transfer medium an image of the color material of the first ink and the aggregate of the components aggregated by the ionic action of the second ink, An intermediate transfer type ink jet recording method for transferring the image to the intermediate transfer type, wherein the applied amount of the second ink is smaller than the applied amount of the first ink. Ink jet recording method. 2. The intermediate transfer type ink jet recording method according to claim 1, wherein the second ink further contains a water-insoluble resin having a minimum film forming temperature of 30 ° C. or lower. 3. The intermediate transfer type ink jet recording method according to claim 1, wherein the first ink further contains a water-insoluble resin having a minimum film-forming temperature of 30 ° C. or lower. 4. The intermediate transfer type ink jet recording method according to claim 1, wherein the intermediate transfer medium on which the image is formed is heated.