The Furukawa Electric Co., Ltd.

Murata Manufacturing Co., Ltd.

Yuko Okuno

Takeo Uno

Sunao Fukutake

Yoshimasa Nishi

Takahiro Tsuruta

Masaru Higuchi

Yoshikazu Okuno

Yoshinori Nagasu

Provided is a surface-treated copper foil excellent in laser processability. The surface-treated copper foil includes a roughened surface formed by subjecting a surface to a roughening treatment, in which when measured using a three-dimensional roughness meter, the roughened surface has a surface skewness Ssk within a range of from &#x2212;0.300 to less than 0 and an arithmetic mean summit curvature Ssc within a range of from 0.0220 nmto less than 0.0300 nm.

Surface-treated copper foil, and copper-clad laminate and circuit board using same

A surface-treated copper foil of the present disclosure includes a copper foil substrate, at least one surface of which has a surface treatment coat including at least a roughening-treated surface on which roughening particles are formed. Observation of a cross-section of the surface-treated copper foil with a scanning electron microscope shows that on a surface of the surface treatment coat, a standard deviation of the particle height of the roughening particles is 0.16 &#x3bc;m or more and 0.30 &#x3bc;m or less, and an average value of the ratio of the particle height to the particle width (particle height/particle width) of the roughening particles is 2.30 or more and 4.00 or less.

Surface-treated copper foil, and copper-clad laminate and printed wiring board using same

A peelable superconductive conductor comprising a superconductive conductor including a substrate and a superconducting layer which is formed on one principal surface of the substrate. The peelable superconductive conductor can further comprise a peelable carrier body, which is formed on a principal surface of the superconductive conductor on an opposite side of the surface on which the superconducting layer is formed.

Peelable superconductive conductor, production method of peelable superconductive conductor, and repair method for superconducting wire

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Tokyo, Japan

Yuko Okuno