Title :
Combined thin-film heads for digital compact cassettes
Author :
Komoda, K. ; Kira, T. ; Minakata, R. ; Nakai, K. ; Nakamura, T. ; Deguchi, H.
Author_Institution :
Sharp Corp., Nara, Japan
fDate :
11/1/1993 12:00:00 AM
Abstract :
A combined thin-film head has been developed for digital-compact-cassette (DCC) recording. In this head, the inductive recording head is placed behind the yoke-type magnetoresistive (MR) playback head. This design greatly simplifies fabrication by reducing the number of layers. Therefore, its structural stability and productivity are superior to those of other head designs. Its recording current is similar to that of a conventional thin-film recording head. The maximum output-level current is 120-160 mA0-p, and the average output at 48 kHz exceeds 100 μVp-p. The overwrite characteristics of 48 kHz on 9.6 kHz are about -19 dB. The influence of the recording field on the playback characteristics of the yoke-type MR head is negligible. This head has the characteristics required for DCC recording and playback
Keywords :
digital audio tape; magnetic heads; magnetic recording; magnetic thin film devices; magnetoresistive devices; 100 muV; 120 to 160 mA; 48 kHz; 9.6 kHz; DCC recording; MR head; Mn1-xZnxFe2O4; MnZn ferrite; NiFe film; digital compact cassette recording; head designs; inductive recording head; output-level current; overwrite characteristics; playback characteristics; recording current; structural stability; thin-film head; yoke type magnetoresistive playback head; CD recording; Coils; Conductive films; Ferrite films; Magnetic heads; Magnetic recording; Magnetic separation; Magnetoresistance; Substrates; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
