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Ink set, recording method and recording device

A recording method and ink set technology, applied in the field of ink sets, can solve the problems of white ink and color ink mixed color clarity, etc.

Active Publication Date: 2019-09-24
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of superimposed recording of white ink and color ink, there is a problem that the white ink and the color ink are mixed, resulting in poor clarity

Method used

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  • Ink set, recording method and recording device
  • Ink set, recording method and recording device
  • Ink set, recording method and recording device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0224] Hereinafter, the present invention will be described more specifically using examples and comparative examples. The present invention is not limited in any way by the following examples.

[0225] [Materials for ink composition]

[0226] The main materials of the ink compositions and treatment liquids used in the following Examples and Comparative Examples are as follows.

[0227] [Pigment dispersion]

[0228] See Production Examples 1 to 3 below.

[0229] [Organic solvents]

[0230] Dipropylene glycol dimethyl ether

[0231] Propylene Glycol

[0232] 2-pyrrolidone

[0233] [coagulant]

[0234] Calcium acetate monohydrate

[0235] calcium chloride dihydrate

[0236] Acetic acid

[0237] CationMaster PD-7 (manufactured by Yokkaichi Gosei Co., Ltd., cationic resin: amine-epichlorohydrin condensation type polymer)

[0238] [resin]

[0239] Resin Emulsion 1 (See Production Example 4 below.)

[0240] Resin Emulsion 2 (See Production Example 5 below.)

[0241] [w...

manufacture example 1

[0247] [Manufacturing Example 1: Preparation of Cyan Pigment Dispersion Liquid]

[0248] St-Ac acid copolymer (a copolymer obtained by copolymerization at a mass ratio of methacrylic acid / butyl acrylate / styrene / hydroxyethyl acrylate = 25 / 50 / 15 / 10. Weight average molecular weight 7000, acid value 150 mgKOH / g) 40 parts by mass were thrown into the liquid obtained by mixing 7 parts by mass of potassium hydroxide, 23 parts by mass of water, and 30 parts by mass of triethylene glycol mono-n-butyl ether, and heated while stirring at 80° C. Thus, an aqueous resin solution was prepared.

[0249] 20 parts by mass of a pigment, 10 parts by mass of an aqueous resin solution, 10 parts by mass of diethylene glycol, and 60 parts by mass of ion-exchanged water were mixed and dispersed using a zirconia bead mill to obtain pigment dispersions of various colors. In addition, the pigments used are as follows.

[0250] Black Pigment Dispersion: Carbon Black

[0251] Cyan pigment dispersion: C....

manufacture example 2

[0252] [Manufacturing Example 2: Preparation of Black Pigment Dispersion Liquid]

[0253] Mix 15 parts by mass of carbon black, 1.5 parts by mass of Solsperse 2700 (manufactured by Lubrizol Co., Ltd.), 1.8 parts by mass of triethanolamine, 0.1 parts by mass of an antifoaming agent (manufactured by Air Products "Surfynol 104E"), and 81.6 parts by mass of ion-exchanged water. Zirconium beads were dispersed to obtain a black pigment dispersion.

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Abstract

The purpose of the present invention is to provide an ink set, a recording method, and a recording device with which it is possible to obtain a recorded matter having excellent sharpness. An ink set contains a white ink composition containing a white coloring material and a resin and a non-white ink composition containing a non-white coloring material and a resin. The white ink composition and the non-white ink composition are used with a treatment liquid containing a coagulant for coagulating the component of the non-white ink composition, and, when a 5% by mass calcium acetate monohydrate aqueous solution and each of the ink compositions are mixed, a ratio of the viscosity increase after the mixing to the viscosity increase before the mixing is lower in the white ink composition than in the non-white ink composition.

Description

technical field [0001] The present invention relates to an ink set and a recording method using the ink set. Background technique [0002] The inkjet recording method is capable of recording high-definition images with a relatively simple device, and has achieved rapid development in various aspects. Among them, various studies have been conducted on image quality, ejection stability, and the like. For example, in Patent Document 1, in order to provide an ink set that can prevent bleeding between these inks and is not easily clogged when a plurality of inks are superimposedly recorded on a non-absorbent recording medium or a low-absorbency recording medium, a A treatment liquid containing an aggregating agent, a first ink containing a coloring material, and a second ink containing a coloring material for recording on a non-absorptive recording medium or a low-absorbing recording medium, and on the recording medium An ink set in which the treatment liquid, the first ink, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/40B41J2/14B41M5/00
CPCC09D11/40B41M5/0023B41J2/14C09D11/322C09D11/38C09D11/54B41J2/2114B41J2/2117B41J11/0015
Inventor 松崎明子
Owner SEIKO EPSON CORP
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