Aluminum alloy support for lithographic printing plate
US4939044A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 18, 1985 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jun 18, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12764
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum alloy support for a lithographic printing plate, comprising a cold rolled plate of aluminum alloy comprising, in % by weight: 98.0% or more Al; Fe in an amount of from 0.15 to 1.2% as an alloying element; and impurities, each of which is present in an amount of from 0.0% but less than or equal to 0.15%, wherein the cold rolled plate has a distribution of Al--Fe and Al--Fe--Si based intermetallic compounds formed from the alloy, having grain sizes of greater than 0 microns but less than or equal to 3 microns, which are positioned directly under an outer surface of the cold rolled plate and wherein the surface of the cold rolled plate is roughened by etching or electrochemical etching and anodically oxidized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.