Ink composition for ink jet recording

Abstract

Abstract PURPOSE: The titled ink composition, having improved dye solubility without clogging a nozzle even after a long period of down-time, and comprising a specific component which is a nonvolatile and wetting liquid as a water absorbing agent, p- toluenesulfonic acid and a specific water-soluble direct dye. CONSTITUTION: A composition comprising (A) one or more water-soluble direct dyes selected from Direct Black 2 (C.I. No.22590), Direct Black 4 (C.I. No. 30245), Direct Black 19 (C.I. No.35255), Direct Black 38 (C.I. No.305235) and Direct Black 154, (B) an aliphatic polyhydric alcohol (alkyl ether derivative), e.g. polyethylene glycol-200, and (C) p-toluenesulfonic acid. The amounts of (A), (B) and (C) are 1W7wt%, 5W30wt% and 0.2W7wt% respectively. EFFECT: Improved jet stability. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Tadashi Fujii

Bibliographic Details