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1. (WO2015115569) INKJET RECORDING INK

Pub. No.:    WO/2015/115569    International Application No.:    PCT/JP2015/052580
Publication Date: Fri Aug 07 01:59:59 CEST 2015 International Filing Date: Fri Jan 30 00:59:59 CET 2015
IPC: C09D 11/30
B41J 2/01
B41M 5/00
C09B 29/30
C09B 33/18
C09B 33/30
C09B 62/04
C09B 67/44
Applicants: FUJIFILM CORPORATION
富士フイルム株式会社
Inventors: SHINOHARA, Ryuji
篠原 竜児
SAITO, Yuko
齋藤 祐弘
Title: INKJET RECORDING INK
Abstract:
 The present invention provides an inkjet recording ink comprising a dye represented by formula (1) below having a weight-average molecular weight of 850 or less, a water-soluble organic solvent represented by general formula (2) or (3) having an SP value of 9.4 or higher and less than 9.75, and water, the content of a surfactant being less than 0.1 mass%. R1, R2: H, halogen atom, OH, COOH, C1-C6 alkyl group, C1-C6 alkoxy group, NO2, azophenyl group; -L1-Ra and the like, L1: O, CH2, C6H4, N=N, SO2 or a combination thereof;Ra:phenyl group, naphthyl group; R3: H, azophenyl group, azonaphtalene group; -L2-Rb and the like, L2: C(=O), C6H4, N=N, NH, SO2 or a combination thereof; Rb: phenyl group, naphthyl group, pyrimidyl group, or the like; M: H, Na, NH4, alkyl ammonium or the like; R: C2-C6 unsubstituted alkyl group; n = 1 to 3.