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Inorganic fine particle dispersion liquid, method for producing inorganic fine particle dispersion liquid, and inkjet recording medium using the same

An inkjet recording medium, fine particle dispersion technology, applied in the direction of copying/marking method, inorganic chemistry, mixing method, etc., can solve the problems of large particle size, poor dispersion stability, unsatisfactory gloss of inkjet recording medium, etc., to achieve The effect of high gloss and high transparency

Active Publication Date: 2007-10-17
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, a dispersion of very fine particles has disadvantages in that its dispersion stability is poor and fine particles tend to agglomerate
[0010] However, the particle size of the silica dispersion prepared using a dispersing machine such as a ball mill or a sand mill is large, and the transparency of the silica dispersion is low
Therefore, the gloss of the inkjet recording medium prepared using this silica dispersion is unsatisfactory
[0011] In addition, the dispersion stability of fumed silica is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0222] A fine silica dispersion was prepared in the following manner.

[0223] (Preparation of Fine Silica Dispersion A-1)

[0224] 25 parts of fumed silica (the average primary particle diameter is 7nm and the specific surface area measured by BET method is 300m 2 / g) (hereinafter referred to as silicon dioxide) was added to 553 parts of deionized water using a homomixer under stirring at 2000 rpm, and then 0.33 parts of dimethyl diallyl ammonium chloride (SHAROL DC902P, 50% aqueous solution, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.), then 50 parts of silica, and then 0.67 parts of dimethyldiallylammonium chloride (SHAROL DC902P, 50% aqueous solution, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.), then add 25 parts of silicon dioxide, then add and dissolve 0.54 parts of zirconyl acetate (ZIRCOZOL ZA-30, 50% aqueous solution, manufactured by Daiichi KigensoKagaku Kogyo Co. , Ltd.), and the mixture was treated with a homomixer (T.K.HOMODISPER manufactured by Tokus...

Embodiment 2

[0255] (Preparation of Fine Silica Dispersion A-2)

[0256] A fine silica dispersion was prepared in the same manner as the preparation of A-1 in Example 1, except that 531 parts of deionized water was added instead of 553 parts of deionized water, and also that 22 parts of ethanol was added.

[0257] (Preparation of Ink Receiving Layer Coating Liquid A-2)

[0258] Ink-receiving layer coating liquid A-2 was prepared in the same manner as in Example 1 except that fine silica dispersion liquid A-2 was used instead of fine silica dispersion liquid A-1.

[0259] (Preparation of Inkjet Recording Sheet)

[0260] An inkjet recording sheet of Example 2 was prepared in the same manner as in Example 1 except that the ink-receiving layer coating liquid A-2 was used instead of the ink-receiving layer coating liquid A-1. The pH of the surface of the ink receiving layer was 4.0.

Embodiment 3

[0262] An ink-receiving layer coating liquid and an inkjet recording sheet were prepared in the same manner as in Example 1, except that a high-pressure homogenizer (NANOMIZERLA-31, manufactured by Nanomizer) was used when preparing the fine silica dispersion liquid Instead of the ALTIMIZER, the silica slurry was passed through the orifice at a process pressure of 80 MPa.

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Abstract

A method of producing an inorganic fine particle dispersion liquid, the method comprising subjecting a dispersion liquid including a water-soluble organic cationic compound, a water-soluble polyvalent metal compound, and inorganic fine particles to a dispersing process by a head-on collision high-pressure dispersing machine or an orifice-passage high-pressure dispersing machine. Also provided is an inorganic fine particle dispersion liquid and an inkjet recording medium using the same.

Description

technical field [0001] The present invention relates to an inorganic fine particle dispersion having excellent long-term stability, a method for preparing the inorganic fine particle dispersion, and an inkjet recording medium. Specifically, the present invention relates to an inkjet recording medium having high gloss, high image density, and suppressed bleeding of images after a long time. Background technique [0002] Inkjet recording media are generally prepared by applying a coating liquid for an ink-receiving layer on a support, followed by heating. A known method of preparing a coating solution for an ink-receiving layer is to add an aqueous solution of a hydrophilic binder such as polyvinyl alcohol and other additives such as cationic polymers, hardeners and surfactants to inorganic fine particles Such as the method in the dispersion of silica fine particles. [0003] The inorganic fine particles are preferably inorganic pigment fine particles, examples of which incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/141B41M5/00B01F3/12B41J2/01B41M5/50B41M5/52C01B33/14C09C1/28C09C3/00C09D11/00C09D11/326C09D11/38C09D17/00
CPCB41M5/5218C01B33/1417B41M5/00C09D17/00C01B33/141B01F23/50
Inventor 远藤俊明永田幸三
Owner FUJIFILM CORP
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