Patent · US Active

Negative-working lithographic printing plate precursors

US9029063B2 · kind B2 · utility

1Cited by

11References

20Claims

0Family size

Assignee

EASTMAN KODAK COMPANY · US

Inventors

Domenico Balbinot · Osterode, DE
Harald Baumann · Tuttlingen, DE
Udo Dwars · Herzberg, DE
Mathias Jarek · Northeim, DE
Christopher D. Simpson · Osterode, DE

Key dates

Filing date	Sep 22, 2011
Grant date	May 12, 2015
Priority date	—
Expiry date	Apr 19, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41C2210/266
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A lithographic printing plate precursor comprises an imagable layer comprising a free radically polymerizable component, an initiator composition capable of generating free radicals upon exposure to imaging infrared radiation, an infrared radiation absorbing dye comprising an infrared radiation absorbing cation and a counter anion, and a polymeric binder. The salt formed between the infrared radiation absorbing cation and a tetraphenyl borate has solubility in 2-methoxy propanol at 20° C. that is greater than or equal to 3.5 g/l. The use of these infrared radiation absorbing dyes in the imagable layers provides a reduced tendency of these dyes to crystallize in the presence of tetraaryl borate counter anions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.