Patent Number: 6,308,405

Title: Process for preparing an electrode substrate

Abstract: An electrode substrate and a recording medium having a smooth surface with surface unevenness of 1 nm or less and a size of 1 .mu.m.quadrature. or more are disclosed. An electrode substrate and a recording medium having a concave-shaped groove for tracking on the surface, which groove has a depth which can detect of the tunnel current from the bottom thereof by a probe electrode for scanning the surface are also disclosed. Information processing devices equipped with the smooth recording medium, an electroconductive probe arranged approximate to the recording medium and a pulse voltage application circuit for recording are also disclosed.

Inventors: Takamatsu; Osamu (Atsugi, JP), Hatanaka; Katsunori (Yokohama, JP), Takimoto; Kiyoshi (Kawasaki, JP), Kawada; Haruki (Yokohama, JP), Eguchi; Ken (Yokohama, JP), Morikawa; Yuko (Kawasaki, JP), Matsuda; Hiroshi (Isehara, JP), Takeda; Toshihiko (Atsugi, JP), Yanagisawa; Yoshihiro (Atsugi, JP), Kawade; Hisaaki (Yokohama, JP), Kawagishi; Hideyuki (Ayase, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: B05D 1/20 (20060101); G11B 11/00 (20060101); G11B 11/08 (20060101); G11B 9/00 (20060101); H05K 003/36 ()

Expiration Date: 10/30/2018