Method for preparing an aluminum foil for use as a support in lithographic printing plates
US5731124A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Jun 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/07
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a method for preparing an aluminium foil comprising the steps of roughening an aluminium foil and subsequently anodizing said aluminium foil characterized in that after said anodization said aluminium foil is cleaned using an aqueous bicarbonate containing solution. The present invention further provides a mono-sheet silver salt diffusion transfer material having as a support the alumium foil obtainable from the above defined method. The step of cleaning in the bicarbonate containing solution improves the adhesion of an image receiving layer containing physical development nuclei to the aluminum foil as revealed from the increased amount of silver precipitated in the image receiving layer when the aluminum foil provided with an image receiving layer is used in a diffusion transfer reversal (DTR) process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.