Patent · US Active

Lithographic printing plate precursor and method of use

US12222645B2 · kind B2 · utility

0Cited by

14References

22Claims

0Family size

Assignee

EASTMAN KODAK COMPANY · US

Inventors

Christopher D. Simpson · Osterode, DE
Stefanie Hansmann · Osterode, DE
Saija Werner · Herzberg, DE
Jianbing Huang · Trumbull, US

Key dates

Filing date	Jun 21, 2022
Grant date	Feb 11, 2025
Priority date	—
Expiry date	Jun 21, 2042

Classification

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

Abstract

IR-sensitive lithographic printing plate precursors provide a stable print-out image using a unique IR-sensitive image-recording layer. The IR radiation-sensitive layer includes: (1) a free radical initiator composition with an electron-donating agent and one or more iodonium cations; (2) a free radically polymerizable composition; and (3) a color-changing compound of Structure (I) having an indene ring in the conjugated chain between the aromatic terminal groups. The IR radiation-sensitive composition and layer also contains one or more borate ions such that the molar ratio of one or more borate ions to the one or more iodonium ions is at least 0.5:1. After IR imaging, these precursors exhibit desirable printout images both fresh and after dark storage. The precursors can be developed on-press.

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