Negatively-working lithographic printing plate precursor and method
US10960656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2018 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Nov 21, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C2210/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A negative-working infrared radiation-sensitive lithographic printing plate precursor can be imaged and developed on-press to provide a lithographic printing plate. Such precursor has an initiator composition that contains compound A of Structure (I) and one or more compounds collectively as compound B of Structure (II) or Structure (III): wherein R1, R2, R3, R4, R5 and R6 are independently alkyl groups each having 3 to 6 carbon atoms; at least one of R3 and R4 is different from R1 or R2; the difference of total number of carbon atoms in R1 and R2 and the total number of carbon atoms in R3 and R4 is 0, 1, or 2; the difference of total number of carbon atoms in R1 and R2 and the total number of carbon atoms in R5 and R6 is 0, 1, or 2; and X1, X2 and X3 are the same or different anions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.