Aqueous ink for inkjet recording

An inkjet recording and metal technology, applied in the direction of ink, applications, household appliances, etc., can solve the problem of insufficient printing density and achieve the effect of high printing density

Inactive Publication Date: 2009-07-22
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the printing density of the water-based ink disclosed in the above-mentioned patent documents is not sufficient when printing on plain paper.

Method used

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  • Aqueous ink for inkjet recording

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3 and comparative example 1、2

[0079] The following ink components were mixed and stirred at 25°C in an amount of 100 parts by weight as a whole to prepare a dispersion, which was filtered through a 0.8 micron filter to obtain a water-based ink.

[0080] (ink composition)

[0081] · Self-dispersing carbon black aqueous dispersion (manufactured by Orient Chemical Industries Co., Ltd.,

[0082] Product name: BONJET CW-2, solid content 15%,

[0083] Average particle diameter: 150nm) 7 parts by weight as pigment solid content

[0084] ・Silicon dioxide secondary particles (shown in Table 1) are 2 parts by weight as solid content

[0085] 5 parts by weight of glycerin

[0086] 5 parts by weight of 2-pyrrolidone

[0087] 2 parts by weight of isopropanol

[0088] ・Acetylenol EH (manufactured by Kawaken Fine Chemicals Co., Ltd.) 1 part by weight

[0089] · Water remaining

[0090] In addition, in Comparative Example 1, instead of using silica particles, water was added.

[0091] (1) Discharge property and (2...

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Abstract

Disclosed is an aqueous ink for inkjet recording which is excellent in print density when printed on plane paper and the like. Also disclosed is an aqueous dispersion used for such an ink. Specifically disclosed is an aqueous ink for inkjet recording which is composed of an aqueous dispersion for inkjet recording containing a coloring agent and a metal oxide secondary particle wherein a plurality of primary particles are linked. In this aqueous ink for inkjet recording, the metal oxide is composed of at least one substance selected from the group consisting of silica, titanium oxide and cerium oxide.

Description

technical field [0001] The present invention relates to an aqueous ink for inkjet recording, and an aqueous dispersion for inkjet recording used in the aqueous ink. Background technique [0002] The inkjet recording method is a recording method in which ink droplets are directly sprayed from very fine nozzles onto a recording member and adhered to obtain characters and images. This method is very popular because it has many advantages such as easy full-color printing, low cost, the ability to use plain paper as a recording member, and non-contact with the object to be printed. [0003] In Patent Document 1, in order to satisfy storage stability, especially long-term storage stability, and water resistance of printed images at the same time, an aqueous pigment dispersion is disclosed, which contains a pigment, a water-soluble organic solvent, and 50 A copolymer resin composed of 90% by weight of styrene monomer and a monomer component having an acid group contains 0.01% to 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00B41J2/01B41M5/00C09D17/00C09D11/322C09D11/328
CPCC09D11/32B41M5/0023
Inventor 伊藤康志
Owner KAO CORP
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