Production of plate-like, sheet-like or tape-like materials and of sensitized lithographic printing plates

US5073475A · kind A · utility

Assignee

• BASF SE

Inventors

• Harald Lauke · Mannheim, DE
• Gregor Schuermann · Reutlingen, DE
• Hartmut Sandig · Bischofswerda, DE
• Thomas Loerzer · Bischofswerda, DE

Key dates

• Filing date: Aug 23, 1990
• Grant date: Dec 17, 1991
• Expiry date: Aug 23, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41N3/038
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A sensitized lithographic printing plate comprising an aluminum substrate which has been mechanically, chemically and/or electrochemically pretreated and anodically oxidized in a conventional manner and a photosensitive copying layer which is applied to this substrate is produced by a process in which the substrate is aftertreated with an aqueous solution of a mixture of a fluoride and a hydrolysis product or condensate of a silane before application of the photosensitive copying layer. There lithographic printing plates are particularly suitable for offset printing.