Negative-working thermal lithographic printing plate precursor comprising a smooth aluminum support
US6983694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2003 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Apr 23, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41N1/083
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A negative-working lithographic printing plate precursor is disclosed which comprises a grained and anodized aluminum support having a hydrophilic surface and a heat-sensitive coating provided on the hydrophilic surface, the coating comprising hydrophobic thermoplastic polymer particles which are capable of forming a hydrophobic phase in the coating by heat-induced coalescence of the polymer particles. The support is characterized by a surface roughness, expressed as arithmetical mean center-line roughness Ra, which is less than 0.45 μm. The smooth surface enables to prepare a lithographic printing plate from the mentioned precursor, which is characterized by a high run length during printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.