Patent · US Active

Negative-working lithographic printing plate precursors with IR dyes

US9132621B2 · kind B2 · utility

0Cited by

10References

15Claims

0Family size

Assignee

EASTMAN KODAK COMPANY · US

Inventors

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

Key dates

Filing date	Oct 18, 2013
Grant date	Sep 15, 2015
Priority date	—
Expiry date	Oct 18, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41C2210/22
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A lithographic printing plate precursor comprises an imageable 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 that is defined by Structure (I) shown in the disclosure, which dyes comprise one or more ethylenically unsaturated polymerizable groups in an organic group that is attached to the methine chain. These infrared radiation absorbing dyes exhibit a reduced tendency to crystallize in the imageable layers in the presence of tetraaryl borate counter anions and therefore provide improved shelf life.

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