Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Aqueous ink composition

A technology of ink composition and water-based ink, applied in the direction of ink, printing, copying/marking methods, etc., which can solve the problems of ink composition that cannot obtain the desired printing quality, printing surface removal or peeling, ink unevenness, etc.

Inactive Publication Date: 2012-10-17
SEIKO EPSON CORP
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the water-based inks proposed in the past, it cannot be said that the printing quality and abrasion resistance of the image formed on the recording medium are sufficiently excellent, and an ink composition that further improves these characteristics is required.
Specifically, color mixing between different colors occurs and the phenomenon spreads beyond the desired area (hereinafter referred to as "bleeding"), and unevenness of ink density and lightness occurs in the filled image (hereinafter referred to as "bleeding"). "uneven shade"), the conventional ink composition can not achieve the desired printing quality
In addition, when a printed matter obtained by using a conventional ink composition is rubbed against an object, the printed surface is often peeled off or peeled off from the recording medium, and practical rub resistance is required.
Waxes have also been studied, but pore clogging, storage stability, and ink uniformity have become issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aqueous ink composition
  • Aqueous ink composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0141] Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to these.

[0142] 1. Preparation of Pigment Dispersion

[0143] The water-based ink composition used in this example uses a water-insoluble pigment as a colorant. When adding a pigment to an aqueous ink composition, a resin-dispersed pigment obtained by dispersing the pigment with a resin dispersant in advance is used. Pigment dispersions were prepared as follows.

[0144] 40 parts by mass of polymer dispersant (copolymerized according to the mass ratio of methacrylic acid / butyl acrylate / styrene / hydroxyethyl acrylate=25 / 50 / 15 / 10, with a weight average molecular weight of 12000) was added to hydrogen In a mixed solution of 7 parts by mass of potassium oxide, 23 parts by mass of water, and 30 parts by mass of triethylene glycol mono-n-butyl ether, polymerization was carried out by heating and stirring at 80° C. to prepare a polymer dispersant paint.

[0145] 33.0 kg o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
particle sizeaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

An aqueous ink composition includes at least one kind of water-insoluble colorant and a wax in which the wax is a paraffin wax with a melting point of 60 DEG C. to 110 DEG C. and an average particle size of 30 nm to 250 nm.

Description

technical field [0001] The present invention relates to aqueous ink compositions. Background technique [0002] The printing method using the inkjet recording method is performed by scattering and adhering ink droplets to a recording medium such as paper. Due to the innovative progress of inkjet recording technology in recent years, the printing method using inkjet recording method has begun to be used in the field of high-definition image recording (image printing) that has been using photography and offset printing until now. Therefore, not only the commonly used plain paper and special paper for inkjet recording (matt type, glossy type), but also printing paper, synthetic paper, film and other ink non-absorbing or low-absorbing recording media have begun to demand high Quality print. [0003] In recent years, there has been research on ink combinations that can record not only on the above-mentioned plain paper and special paper for inkjet recording, but also on film-ba...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/12C09D11/10C09D11/08B41J2/01B41M5/00C09D11/00C09D11/322C09D11/326C09D11/328C09D11/38
CPCC09D11/08C09D11/10C09D11/322B41J2/01C09D11/12
Inventor 青木克子向井启
Owner SEIKO EPSON CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com