Aluminium sheet with rough surface
US6524768B1 · kind B1 · utility
2Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1999 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Sep 3, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Aluminium sheet suitable for use as a lithographic plate support has a surface that is uniformly rough by virtue of: a rippled topography having an aspect ratio of at least 1.3 on a sale of 5-200 &mgr;m; and a superimposed pitted structure on a scale of 1-20 &mgr;m. A method of making the aluminium sheet involves pack rolling two aluminium ribbons to generate facing surfaces having the transverse rippled structure; followed by a small amount of a conventional roughening or graining treatment to develop the pitted structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.