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Oil-based ink-jet ink

An inkjet and oil-based technology, applied in the direction of ink, printing, copying/marking methods, etc., can solve the problem of ink drop flight bending and scattering caused by clogging

Active Publication Date: 2012-07-11
RISO KAGAKU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Such clogging induces ejection defects such as flight bending and scattering of ink droplets, so it is undesirable

Method used

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  • Oil-based ink-jet ink

Examples

Experimental program
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Effect test

Embodiment

[0036] (preparation of copper phthalocyanine (washing product) and disazo yellow (washing product))

[0037] Copper phthalocyanine (Cyamine Bule KRG: Sanyang pigment) and disazo yellow (seikafast Yellow 2200: Daini Seika) were mixed in ion-exchanged water so as to reach 10% by mass, stirred and dispersed for 1 hour, and filtered the dispersion. This operation was repeated three times and dried to obtain a washed product of copper phthalocyanine (KRG) and disazo yellow.

[0038] (Preparation of copper phthalocyanine derivatives (washing products))

[0039] A copper phthalocyanine derivative (SOLSPERSE 5000: Lubrizol, Japan) was mixed in ion-exchanged water so as to be 10% by mass, stirred and dispersed for 1 hour, and the dispersion was filtered. This operation was repeated three times, and it was dried to obtain a washed copper phthalocyanine derivative (SOLSPERSE 5000).

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PUM

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Abstract

Provided is an oil-based ink-jet ink which can be inhibited from causing deposition of solid matter. The oil-based ink-jet ink comprises a pigment, a dispersant, and an organic solvent and has a calcium content of 8 ppm or less and a magnesium content of 3 ppm or less.

Description

technical field [0001] The present invention relates to oil-based inkjet inks, and more specifically, to oil-based inkjet inks capable of suppressing accumulation of solids. Background technique [0002] The inkjet recording method is a method in which highly fluid inkjet ink is ejected from a fine nozzle in the form of ink particles and an image is recorded on a printed object placed opposite to the nozzle. Since it is low-noise and can print at high speed Recording method, so it has become popular rapidly in recent years. Various so-called oil-based inkjet inks in which pigments are finely dispersed in water-insoluble solvents have been proposed as inks used in such inkjet recording methods. [0003] For example, in Patent Document 1, the present applicant proposes an ink in which a pigment is dispersed in a nonpolar solvent such as an ester solvent, a higher alcohol solvent, or a hydrocarbon solvent. This ink has the advantages of excellent in-machine stability and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00B41J2/01B41M5/00C09D11/322C09D11/324C09D11/326C09D11/38C09D11/40
CPCC09D11/36C09D11/322
Inventor 远藤敏弘荒井正胜山田宪司栗山胜巳田中笃川上一哉志村真一郎今翔太郎松泽克明野村浩二
Owner RISO KAGAKU CORP
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