| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolled copper foil in which discoloration after annealing due to recrystallization temperature can be prevented and which has excellent strength and workability when being formed in the foil and also has small surface roughness. SOLUTION: The rolled copper foil is characterized in that: it has a composition consisting of≥99.9 mass% Cu and the balance inevitable impurities; its thickness (t) is≤10μm; with respect to maximum height of surface Ry, a value of Ry/t is≤0.2; and it has a structure consisting only of recrystallized structure of 5 to <15μm mean particle diameter alone. COPYRIGHT: (C)2009,JPO&INPIT
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