Lithographic printing plate precursor and method of use

US11714354B2 · kind B2 · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Philipp Viehmann · Göttingen, DE
• Saija Werner · Herzberg, DE
• Christopher D. Simpson · Osterode, DE
• Stefanie Hansmann · Osterode, DE

Key dates

• Filing date: Nov 13, 2020
• Grant date: Aug 1, 2023
• Expiry date: Aug 6, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41C2210/22
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

IR-sensitive lithographic printing plate precursors provide a stable print-out image using a unique IR radiation-sensitive composition. This IR radiation-sensitive composition includes: a) free radically polymerizable component; an b) IR radiation absorber; c) an initiator composition; a d) borate compound; and a e) compound capable of forming a colored boronic complex during or after exposure of the infrared radiation-sensitive image-recording layer to infrared radiation. The resulting print-out image exhibits an excellent color contrast between the exposed and non-exposed regions. After IR imaging, these precursors can be developed off-press or on-press.