发明名称 |
Base material for an aluminum offset printing plate |
摘要 |
The invention is directed toward a base material for aluminium offset printing plates having improved heat stability comprising an aluminum alloy consisting of from about 0.2 to about 0.6% by weight of iron, less than about 0.25% by weight silicon and copper combined, from about 0.1 to about 0.3% by weight manganese and the remainder being aluminum and trace production impurities, said base material further characterized as containing secondary precipitates in the form of phases of the Al Mn Si: Al Fe: Al Mn type which bear a ratio to one another of from about 1:1:2 to about 1:1:3, the mean particle size being from about 0.25 to about 0.010 micron with a maximum particle size of less than about 0.3 micron and further containing a precipitation structure with a degree of dispersion of less than about 50 phases per cubic micron and a process for producing such material. The sheet material according to this invention may be uniformly roughened in either HCl or HNO3 electrolyte baths under very similar process parameters.
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申请公布号 |
US4945004(A) |
申请公布日期 |
1990.07.31 |
申请号 |
US19880186152 |
申请日期 |
1988.04.26 |
申请人 |
HOECHST AG;VEREINIGTE-ALUMINUM WERKE AG. |
发明人 |
SPRINTSCHNIK, GERHARD;NIEDERSTAETTER, WALTER;REISS, KURT;ASTEN, WOLFGANG V.;SCHARF, GUNTHER;GRZEMBA, BARBARA |
分类号 |
C23G1/14;B41N1/08;B41N3/00;C22C21/00;C22F1/00;C22F1/04;C23F1/00;C23F1/20;C25D11/02;C25D11/04;C25F3/04 |
主分类号 |
C23G1/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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