Method of producing a planographic printing plate
US8993216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2013 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Feb 21, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41N1/003
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a planographic printing plate is provided, which includes: subjecting a planographic printing plate precursor to image-wise exposure, wherein the precursor includes plural recording layers at least one of which contains (A) an infrared absorbing agent on a support, the upper recording layer contains (B) a water-insoluble and alkali-soluble polymer compound having a repeating unit containing a fluoroalkyl group or a siloxane structure; and developing the precursor using an alkali developer containing (C)an ammonium salt compound of Formulae (C-1) to (C-3), wherein R1 represents a methyl group or an ethyl group, R2 and R3 represent a hydrocarbon group having 3 to 20 carbon atoms, R4 represents a hydrocarbon group, A represents an atomic group which forms a nitrogen-containing aliphatic ring with N+, B represents an atomic group which forms a nitrogen-containing aromatic ring with N+, and X−represents a counter anion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.