Antonelli, Terry, Stout & Kraus, LLP
Apparatus and thin film magnetic head with magnetic membrane layers of different resistivity
 In order to prevent degradation of the recording performance during radio frequency recording, and to provide a thin film magnetic head and a recording reproducing sectional pattern magnetic head which has a magnetic pole width less than 2 .mu.m and an ultra high density magnetic storage apparatus of 10 Gb/ in.sup.2 grade, a recording head is provided in which a lower part magnetic film serves as a shielding film of a reproducing selection, a non magnetic gap film is formed during formation of the upper part magnetic film and the lower part magnetic film, one part of the lower part magnetic film or the upper part magnetic film has a higher resistivity of more than 80 .mu..OMEGA.cm than other parts, the upper part magnetic film is formed by flame galvanizing, and a gap section of the lower part magnetic film or the upper part magnetic film has a convex shape. 
Hitachi, Ltd.
B G G G G B G
B82Y G11B G11B G11B G11B B82Y G11B
inventional additional additional additional inventional inventional inventional
Moriaki Matahiro Hiroshi Noboru Atsushi Noboru Masaaki Yohji Tomohiro Katsumi Takashi Miki
Fuyama Komuro Fukui Yoshida Nakamura Shimizu Sano Maruyama Okada Hoshino Kawabe Hara