Ink for the ink jet process

US4106027A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Klaus Hoffmann · Bad Tölz, DE
• Rudolf Meyer · Leverkusen, DE
• Hans Ohlschlager · Bensberg, DE

Key dates

• Filing date: Sep 22, 1976
• Grant date: Aug 8, 1978
• Expiry date: Sep 22, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/36
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Non-aqueous inks having an electric conductivity of at least 10.sup.-4 Ohm.sup.-1 cm.sup.-1, a viscosity of at most 5 cP at 20.degree. C. and in which the liquid medium consists completely or predominantly of one or more solvents having each an evaporation index of less than 11 are most useful for the ink-jet recording process in which a jet of ink is ejected from a nozzle by application of pressure and after its breaking up into droplets is modulated according to the information to be recorded. Such inks are particularly useful for writing on non-absorbent surfaces.