| 摘要 |
[Problem] To provide a rolled copper foil for which ease of handling is improved by moderately roughening the surface of the copper foil, and which has excellent flexibility and good surface etching characteristics. [Solution] For this rolled copper foil: in a state in which the rolled copper foil has a 60° gloss (G60RD) at the surface, as measured parallel to the rolling direction, of 100 to 300, and is thermally refined to a recrystallized structure by heating for 30 minutes at 200°C, the (200) plane diffraction intensity, obtained according to X-ray diffraction of the rolled surface, with respect to the (200) plane diffraction intensity (I0) obtained by X-ray diffraction of fine copper powder is 20 <= I/I0 <= 40; on three straight lines that are 175 mum long in the direction parallel to the rolling direction, and are at least 50 mum apart from each other in a direction perpendicular to the rolling direction, at the surface of the copper foil, the ratio (d/t) of the average value (d) of the difference between the minimum height and the maximum height of each straight line in the thickness direction, which corresponds to the maximum depth of an oil pit, and the thickness (t) of the copper foil, is not more than 0.1; and the ratio (G60RD/G60TD) between the 60° gloss (G60RD) at the surface, as measured parallel to the rolling direction, and a 60° gloss (G60TD) at the surface, as measured perpendicular to the rolling direction, is less than 0.8. |
