Ink-ribbons comprising IR-absorbing compounds

US5607762A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernhard Albert · Monsheim, DE
• Juergen Kipper · Karlsruhe, DE
• Friedrich Closs · Bischofswerda, DE
• Helmut Bellaire · Ludwigshafen, DE

Key dates

• Filing date: Sep 14, 1995
• Grant date: Mar 4, 1997
• Expiry date: Sep 14, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31504
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Ink ribbons containing one or more compounds from the group comprising phthalocyanines, the naphthalocyanines, the nickel dithiolene complexes, the methine dyes and the azulene quaternary-acid dyes, all of which have their absorption maximum in the region from 700 to 1,200 nm.