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Ink composition for ink-jet recording, recording method using same, and record

An ink composition and inkjet recording technology, applied in the direction of copying/marking method, ink, application, etc., can solve the problems of poor rub resistance, insufficient fixation of ink and recording medium, etc.

Inactive Publication Date: 2005-03-09
SEIKO EPSON CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, such an inkjet recording ink composition using a self-dispersing pigment has a high OD value, but has the problem of insufficient fixability of the ink to the recording medium (especially fixability of the pigment in the ink) and poor rub resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach A

[0057] The ink composition for inkjet recording of Embodiment A is a composition used as a recording liquid, which is ejected in the form of droplets from a print head of an inkjet printer by a so-called inkjet recording method, and recorded on a recording medium such as paper. And form images such as characters and graphics (hereinafter, the ink composition for inkjet recording of the present embodiment A is simply referred to as "the ink composition of the present embodiment A").

[0058] The ink composition of the present embodiment A contains at least a self-dispersing pigment, resin particles having a glass transition point of 10°C or higher, and resin particles having a glass transition point of 0°C or lower.

[0059] Since the ink composition of the present embodiment A is constituted as above, a sufficient OD value of the image formed by the ink composition is maintained by the self-dispersing pigment, and the respective characteristics of the two types of resin particl...

Embodiment approach B

[0118] The inkjet recording ink composition of Embodiment B is a composition containing at least a self-dispersing pigment, resin particles having an average particle diameter of less than 100 nm, and resin particles having an average particle diameter of 100 to 250 nm (hereinafter, the inkjet recording ink composition of Embodiment B is referred to as: The ink composition for ink recording is simply referred to as "the ink composition of the present embodiment B.").

[0119] Regarding the ink composition of the present embodiment B, especially matters not described in detail are the same as those described in detail in the aforementioned embodiment A. Therefore, to the ink composition of the present embodiment B, the matters detailed in the aforementioned embodiment A can be appropriately applied.

[0120] Since the ink composition of the present embodiment B is obtained by the above constitution, while maintaining a sufficient OD value of the image formed by the ink composit...

Embodiment approach C

[0141] The inkjet recording ink composition of Embodiment C is a combination containing at least a self-dispersing pigment, resin particles having a minimum film forming temperature (MFT) of 20°C or higher, and resin particles having a minimum film forming temperature (MFT) of 10°C or lower (The ink composition for inkjet recording of the present embodiment C is simply referred to as "the ink composition of the present embodiment C" hereinafter.).

[0142] Since the ink composition of the present embodiment C is obtained by the above constitution, the minimum film forming temperature (MFT) (hereinafter abbreviated as MFT) can be exhibited while maintaining a sufficient OD value of the image formed by the ink composition by the self-dispersing pigment. "MFT") differs in the respective characteristics of the two resin particles, thereby achieving a balance between the OD value and fixability of the ink composition, and particularly improving both of the OD value and fixability. ...

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Abstract

It is an object of the present invention to provide an ink jet recording ink composition with good reliability and print quality, a high OD value, and good fixability that affords excellent smear resistance. This object is achieved with the present invention by providing ink jet recording ink composition comprising at least a self-dispersing pigment and two types of resin particles with mutually different properties. The above-mentioned two types of resin particles are two types of resin particles whose glass transition points, average sizes, minimum film-formation temperatures, zeta potentials, and other such properties are mutually different. The present invention also provides a recording method, wherein the above-mentioned ink composition is used to form an image on a recording medium, and provides recorded matter comprising an image formed on a recording medium using the above-mentioned ink composition.

Description

technical field [0001] The present invention relates to an ink composition for inkjet recording having good reliability and print quality, high OD value, good fixability, and excellent rub resistance. [0002] The present invention also relates to an inkjet recording ink composition that has high reliability, fixability, high OD value of recorded images, good print quality, and can impart gloss. Background technique [0003] The inkjet recording method is a printing method in which small droplets of ink are sprayed and attached to a recording medium such as paper to print. Inks are generally prepared by dissolving various water-soluble dyes in water or water and a water-soluble organic solvent. Generally, images formed with inks containing such water-soluble dyes have disadvantages of poor water resistance and light resistance. [0004] In contrast, inks obtained by dispersing pigments in aqueous media have excellent water resistance and light resistance. For example, Jap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41M5/00C09D11/00C09D11/322
CPCC09D11/30C09D11/322
Inventor 金谷美春伊东淳百濑雅之吉村寿洋山崎章弘石田忠
Owner SEIKO EPSON CORP
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