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Ink composition and ink jetting record method

A recording method and composition technology, which can be applied in the directions of ink, printing, household appliances, etc., can solve the problems of ink preservation, precipitation, ink preservation problem, low transparency, etc.

Inactive Publication Date: 2009-04-01
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, although the pigment ink has improved the light resistance, water resistance and ozone resistance to a certain extent, it is difficult to say that the improvement is very sufficient, and because the transparency of the pigment particles is low, there are problems such as poor color reproducibility, hard pigment particles, and exposure to the carrier. The problem of poor abrasiveness on the surface
At this point, it has not reached the level of silver salt color photos
[0014] In addition, since the pigment ink is difficult to adjust the specific gravity of the particles, etc., there will be problems such as the formation of sediment during the storage of the ink, making the storage of the ink itself an inherent problem.

Method used

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  • Ink composition and ink jetting record method

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preparation example Construction

[0426] In the preparation of the above-mentioned colored fine particles, the above-mentioned high-boiling organic solvent is an essential component for forming stable colored fine particles having an excellent hue.

[0427] In the present invention, the above-mentioned high-boiling organic solvent refers to an organic solvent whose boiling point is higher than 200°C and whose melting point is lower than 800°C. The particle diameter is easily coarsened or agglomerated easily, which has a bad influence on the ejectability of the ink. Therefore, the solubility in water is desirably 4 g or less, more desirably 3 g or less, further desirably 2 g or less, especially Ideally, it is 1 g or less.

[0428] In this specification, [water solubility] refers to the saturated concentration of water in the high-boiling organic solvent at 25°C, and represents the mass (g) of water that can be dissolved in 100 g of the high-boiling organic solvent at 25°C.

[0429] The usage-amount of the high...

Embodiment 1

[0728] [Preparation of sample A-101]

[0729] The ink composition sample A-101 of the present invention containing colored fine particles was prepared according to the following method.

[0730] At 70°C, dissolve 8 g of hydrophobic pigment (M-6) in 7 g of high-boiling organic solvent (S-52), 9 g of hydrophobic polymer (P-17), 1 g of anti-fading agent (AL-1), Decolorizer (AL-2) 0.5g and cosolvent (AS-1) 140ml. While stirring the above solution with a magnetic stirrer, 400 ml of deionized water and 20 ml of sodium polyethylene oxide lauryl ether sulfate (25%) were added to prepare an oil-in-water type coarse particle dispersion.

[0731] Next, the above-mentioned coarse particle dispersion was passed through a micro fluidex (MICROFLUIDEX INC) 5 times under a pressure of 60 Mpa (600 bar) to be micronized. The resulting emulsified dispersion was then depressurized, and ethyl acetate (AS-1) was removed.

[0732] Additives such as diethylene glycol 140g, glycerin 64g, SURFYNOL 46...

Embodiment 2

[0752] [Preparation of samples B-101 to B-106]

[0753] Except for the four ink compositions A-101, A-108, A-109, and A-114 prepared in the above Example 1 and A-114 in Example 1, the hydrophobic pigment was changed to the following Except for the hydrophobic pigments shown in Table 2, the rest of the ink compositions with the same composition as the above A-114—B-101 to B-1066 ink compositions, that is, a total of 10 ink compositions filled with ink jet printing— Images were recorded on paper glossy paper EX (manufactured by Fujifilm Co., Ltd.) using the above-mentioned machine in a cylinder of PM670 (manufactured by EPSON Co., Ltd.), and evaluation was performed when heat fixing (heat treatment and pressure treatment) was performed by a hot roller and when it was not. Ozone-resistant storage and light fastness during heat-fixing.

[0754] [Sample evaluation and results]

[0755] 1) Evaluation of light fastness

[0756] Under the condition of a fluorescent lamp of 16,000 l...

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Abstract

An ink composition comprising at least one hydrophobic pigment, at least one hydrophobic polymer, at least one high-boiling organic solvent with a water solubility of 4 g or less and a boiling point higher than 200°C and a melting point lower than 800°C, and A solution of at least one co-solvent having a boiling point lower than 200°C and a solubility in water of 25 g or less is mixed with a water-soluble medium, emulsified and dispersed, and then the colored particles are obtained by removing the above-mentioned co-solvent, wherein the average particle diameter of the above-mentioned colored particles is 0.01 to 0.5 μm, the coefficient of variation of the particle diameter is not more than 45%, and the specific gravity is 0.9 to 1.2. The present invention also discloses an inkjet recording method in which the above-mentioned colored particles are heated and / or pressurized to melt the above-mentioned colored particles after spraying the above-mentioned ink composition on the above-mentioned imaging material to form an image.

Description

technical field [0001] The present invention relates to an ink composition containing a hydrophobic pigment and an ink jet recording method using the ink composition. More specifically, it relates to an ink composition capable of forming an image excellent in abrasion resistance and color retention by an ink jet recording method, and an ink jet recording method using the ink composition and a developing material. Background technique [0002] A method of forming an image, particularly a full-color image, using a recording method such as an ink jet method, an electrophotographic method, and a sublimation thermal transfer method has rapidly spread. Among the above-mentioned recording methods, silver salt photographs are aimed at, and in particular, how to bring color tone reproducibility, image density, gloss, water resistance, and weather resistance to silver salt photographs is a subject that needs to be developed. [0003] The above-mentioned ink jet recording method is a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/10B41M7/00C09D11/00
CPCB41M7/00C09D11/30C09D11/328C09D11/40
Inventor 高桥修出口泰章石井善雄矢吹嘉治
Owner FUJIFILM CORP