Title :
New method for monolithic gap head
Author :
Konishi, K. ; Arai, N. ; Kishimoto, K. ; Ono, H. ; Akai, H. ; Gotoh, N. ; Noro, Y.
Author_Institution :
Hitachi Ltd., Yokohama, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
A novel monolithic gap (MG) head is proposed and its fabrication process is described for a VCR where the track width and the gap length cannot be determined in a mechanical manner but rather by applying such method as sputtering and photolithography. These methods were applied to a head process with a 50-mm2 wafer, and the practical applicability of the process was confirmed. The performance of the head was also examined under the 8-mm video specifications, and it was confirmed that the output level and the frequency response were as good as those of the conventional bonding-type head
Keywords :
magnetic heads; magnetic recording; photolithography; sputter deposition; video recording; video tape recorders; 8 mm; VCR; fabrication process; frequency response; gap length; monolithic gap head; output level; performance; photolithography; sputtering; track width; video specifications; Coils; Magnetic cores; Magnetic flux; Magnetic heads; Magnetic materials; Milling; Petroleum; Resists; Rough surfaces; Surface roughness;
Journal_Title :
Magnetics, IEEE Transactions on
