Matsushita Electric Industrial Co., Ltd.

Hiroshi Yoda

Norimoto Nouchi

Masaya Sakaguchi

Yoshiaki Mizoh

Masayuki Hino

Mitsuhisa Fujiki

Tetsuya Okana

Suekazu Kugioka

A method of manufacturing the front surface shape of plural magnetic heads precisely in batch in a desired dimension After fixing plural magnetic heads,and preliminarily processing curved surfaces along the sliding direction S on a rotary member,, the curved surfaces Ts along the thickness direction T orthogonal to the sliding direction S of the magnetic heads,are formed in batch by finish polishing process by means of abrasive tape or the like.

Rotary head device, magnetic head unit and manufacturing method thereof

A head cleaning device for use in a magnetic recording and reproducing apparatus comprises a cleaning roller in which a lubricant with an excellent lubricating action under low humidity conditions impregnates the soft material. This lubricant compensates for the drop in the natural lubricating action resulting from a moisture deficiency, and therefore prevents the production of seized deposits. Furthermore, the head cleaning device comprises a first cleaning portion impregnated with polymer resin and abrasive particles, and a second cleaning portion comprising only a soft material, the second cleaning portion can remove by wiping any abrasive particles or deposits left on the magnetic head surface immediately after the abrasive cleaning action of the first cleaning member.

Head cleaning device

A head cleaning device for use in a magnetic recording and reproducing apparatus comprises a cleaning roller in which a lubricant with an excellent lubricating action under low humidity conditions impregnates the soft material. This lubricant compensates for the drop in the natural lubricating action resulting from a moisture deficiency, and therefore prevents the production of seized deposits. Furthermore, the head cleaning device comprises a first cleaning portion impregnated with polymer resin and abrasive particles, and a second cleaning portion comprising only a soft material, the second cleaning portion can remove by wiping any abrasive particles or deposits left on the magnetic head surface immediately after the abrasive action of the first cleaning member.

In order to prevent the staining of magnetic heads of a magnetic recorder in a low humidity environment, a refrigeration device which refrigerates a magnetic tape is positioned so as to engage the magnetic tape prior to the tape engaging the magnetic heads. The refrigeration device comprises either a refrigeration post or a refrigerated semi-closed space and functions to transfer water to the magnetic tape.

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Hirakata, Japan

Hiroshi Yoda