INK COMPOSITION, METHOD OF INK-JET RECORDING, AND PRINT

Title:

INK COMPOSITION, METHOD OF INK-JET RECORDING, AND PRINT

Document Type and Number:

WIPO Patent Application WO/2005/030885

Kind Code:

A1

Abstract:

An ink composition which contains a metal phthalocyanine type cyan dye and can give an image having improved indoor storage stability (gas resistance). The ink composition comprises water, a metal phthalocyanine type cyan dye, and a sulfo-containing aromatic compound and/or a salt thereof which each is represented by the following general formula (1) and/or (2). Also provided are: a method of ink-jet recording comprising ejecting droplets of an ink composition and adhering the droplets to a recording medium to conduct recording, wherein the ink composition to be used is the ink composition described above; and a print characterized by being obtained by recording with that ink composition. (Chemical formula 1) (In the formula, M¹ represents a counter ion as a component of the salt; X is an integer of 1 to 3; and R¹ and R² may be the same or different and each represents hydrogen, C_1-6 alkyl, or C_1-6 alkoxy.) (Chemical formula 2) (In the formula, M² represents a counter ion as a component of the salt; Y is an integer of 1 to 4; and R³ and R⁴ may be the same or different and each represents hydrogen, C_1-6 alkyl, or C_1-6 alkoxy.)

Inventors:

OKI YASUHIRO (JP)
KITAMURA KAZUHIKO (JP)
HAYASHI HIROKO (JP)

Application Number:

PCT/JP2004/014189

Publication Date:

April 07, 2005

Filing Date:

September 28, 2004

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)
OKI YASUHIRO (JP)
KITAMURA KAZUHIKO (JP)
HAYASHI HIROKO (JP)

International Classes:

B41J2/01; B41M5/00; C09D11/00; C09D11/326; C09D11/328; C09D11/38; (IPC1-7): C09D11/00

Foreign References:

JP2002362004A	2002-12-18
JP2002332434A	2002-11-22
JPH0354268A	1991-03-08

Other References: