Coating formulation for printing plate precursor, printing plate precursor, printing press, fabrication process of printing plate, and regeneration process of printing plate
US7070903B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 25, 2002 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Apr 25, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are a printing plate precursor, a fabrication process of the printing plate precursor, a fabrication process of a printing plate, a regeneration process of the printing plate, a printing press, and a coating formulation for the printing plate precursor. According to the present invention, a printing plate can be fabricated directly from digital data, and sufficient image quality can be obtained without a developing step, i.e., a developer. To permit repeated use of the precursor, the precursor has a surface, which contains a photocatalyst and is capable of showing hydrophilicity when exposed to activating light having energy higher than band gap energy of the photocatalyst. A coating formulation—which comprises fine particles of a thermoplastic resin having both a property that the particles unite to the surface when heated and a property that the particles decompose under action of the photocatalyst when exposed to activating light having energy higher than band gap energy of the photocatalyst—is applied as a hydrophobizing agent onto the surface. At least a part of the surface of the precursor is heated such that the fine particles applied on the part of the surface are…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.