Aluminum alloy plate for planographic printing plate

An aluminum alloy plate for a planographic printing plate capable of being provided with a satisfactory roughed surface by electrolytic etching. The aluminum alloy plate contains 0.1 to 0.6% of Fe, 0.01 to 0.2% of Si, 5 to 150 ppm of Cu, and balance of Al and unavoidable impurities and has a surface...

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Bibliographic Details
Main Author YAMAGUCHI KEITAROU
Format Patent
LanguageEnglish
Published 28.02.2002
Edition7
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
LINING MACHINES
MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE
METALLURGY
PERFORMING OPERATIONS
PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
PRINTING
PRINTING PLATES OR FOILS
STAMPS
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
TYPEWRITERS
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Summary:An aluminum alloy plate for a planographic printing plate capable of being provided with a satisfactory roughed surface by electrolytic etching. The aluminum alloy plate contains 0.1 to 0.6% of Fe, 0.01 to 0.2% of Si, 5 to 150 ppm of Cu, and balance of Al and unavoidable impurities and has a surface layer portion formed of a metastable phase dispersion layer in which metastable phase AlFe-based intermetallic compound particles are dispersed. The metastable intermetallic compound particles each act as a starting point for pits. The alloy plate is formed with a roughed surface which is reduced in unetching and uniformly formed with pits, by electrolytic etching.
Bibliography:Application Number: US20010901313