Ink for ink jet recording

Abstract

Abstract PURPOSE: To provide the titled ink giving stable jet direction even after long- term operation or pause, storable for a long period without precipitation, and non-corrosive to meals, by using a water-soluble dye subjected to he ion exchange treatment with a cation exchange resin, as a component. CONSTITUTION: An aqueous solution of a water-soluble dye, preferably a water- soluble acid dye or direct dye, is passed through a column packed with a cation exchange resin (e.g. a resin based on polystyrenesulfonic acid) to remove the metals such as alkaline earth metals, aluminum, iron, nickel, etc. from the dye. The treated dye is mixed with a wetting agent, a surface tension modifier, etc. to obtain the objective ink. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Tadashi Fujii
• 👤 Tomiko Kawakami
• 👤 Tomoyuki Yamaguchi
• 👤 Seiichi Sakuma

Bibliographic Details