Abstract: An apparatus has a first electrode group (1) including at least one electrode and arranged on the abdominal surface of a subject (human) with the navel of the subject serving as a reference position, a second electrode group (2) including at least one electrode and arranged on the back surface of the subject, a third electrode group (3) including at least two electrodes and arranged on the surface of the subject at an intermediate position between the first and second electrode groups (1, 2), and a controller (8) to supply a current between an electrode selected from the first electrode group (1) and an electrode selected from the second electrode group (2), measure a voltage generated between two electrodes of the third electrode group (3), and compute an abdominal fat quantity of the subject according to the measured voltage.

Abstract: A magnetic tape comprising a substrate having on one side thereof a magnetic layer serving as a recording surface and on the other side thereof a resin layer serving as a non-recording surface, wherein said magnetic tape has a region on the side of the non-recording surface along the longitudinal direction of the tape in which a regular pattern for servo tracking having different optical properties from the other major region of the side of the non-recording surface is to be formed, and said magnetic tape has a thickness of 7 ?m or less.

Abstract: A magnetic tape (1) characterized by having a backcoating layer (5) which comprises a binder and fine particles having been dispersed in the binder and being capable of irreversibly changing in color on oxidation reaction, and has a sufficient number of microvoids of sufficient size to supply sufficient oxygen to cause the oxidation reaction.

Abstract: Two current electrodes 2 and 3 are arranged on a circumference of a subject 1, a distance between the two current electrodes being sufficiently shorter than a circumferential length of the subject 1. A current source 4 passes a current between the two current electrodes. A measuring electrode 5 is arranged adjacent to one of the two current electrodes 2 and 3. A measuring electrode 11 is arranged substantially opposite to the two current electrodes 2 and 3 across the subject 1. A voltmeter 7 measures a voltage generated between the measuring electrodes 5 and 11. A body fat computing unit 25 computes the quantity of subcutaneous fat 8 of the subject 1 according to the voltage measured with the voltmeter 7.

Abstract: A magnetic tape (1) characterized by having a backcoating layer (5) which comprises a binder and fine particles having been dispersed in the binder and being capable of irreversibly changing in color on oxidation reaction, and has a sufficient number of microvoids of sufficient size to supply sufficient oxygen to cause the oxidation reaction.

Abstract: A magnetic tape comprising a substrate having on one side thereof a magnetic layer serving as a recording surface and on the other side thereof a resin layer serving as a non-recording surface, wherein said magnetic tape has a region on the side of the non-recording surface along the longitudinal direction of the tape in which a regular pattern for servo tracking having different optical properties from the other major region of the side of the non-recording surface is to be formed, and said magnetic tape has a thickness of 7 &mgr;m or less.

Abstract: An apparatus has a first electrode group (1) including at least one electrode and arranged on the abdominal surface of a subject (human) with the navel of the subject serving as a reference position, a second electrode group (2) including at least one electrode and arranged on the back surface of the subject, a third electrode group (3) including at least two electrodes and arranged on the surface of the subject at an intermediate position between the first and second electrode groups (1, 2), and a controller (8) to supply a current between an electrode selected from the first electrode group (1) and an electrode selected from the second electrode group (2), measure a voltage generated between two electrodes of the third electrode group (3), and compute an abdominal fat quantity of the subject according to the measured voltage.

Abstract: A magnetic tape comprising a substrate having on one side thereof a magnetic layer serving as a recording surface and on the other side thereof a resin layer serving as a non-recording surface, wherein said magnetic tape has a region on the side of the non-recording surface along the longitudinal direction of the tape in which a regular pattern for servo tracking having different optical properties from the other major region of the side of the non-recording surface is to be formed, and said magnetic tape has a thickness of 7 &mgr;m or less.

Abstract: A magnetic tape (1) characterized by having a backcoating layer (5) which comprises a binder and fine particles having been dispersed in the binder and being capable of irreversibly changing in color on oxidation reaction, and has a sufficient number of microvoids of sufficient size to supply sufficient oxygen to cause the oxidation reaction.

Abstract: A magnetic tape (1) characterized by having a backcoating layer (5) which comprises a binder and fine particles having been dispersed in the binder and being capable of irreversibly changing in color on oxidation reaction, and has a sufficient number of microvoids of sufficient size to supply sufficient oxygen to cause the oxidation reaction.

Abstract: A magnetic tape comprising a substrate having on one side thereof a magnetic layer serving as a recording surface and on the other side thereof a resin layer serving as a non-recording surface, wherein said magnetic tape has a region on the side of the non-recording surface along the longitudinal direction of the tape in which a regular pattern for servo tracking having different optical properties from the other major region of the side of the non-recording surface is to be formed, and said magnetic tape has a thickness of 7 &mgr;m or less.

Abstract: Magnetic tape (1) comprising a substrate, a magnetic layer provided on one side of the substrate and a backcoating layer (5) provided on the other side of the substrate, wherein the backcoating layer (5) is a layer capable of magnetic recording on which three or more servo tracks (10a, 10b 10c) have magnetically been formed in parallel with the longitudinal direction of the tape, and the backcoating layer (5) has a higher coercive force than the coercive force of the whole of all the layers on the magnetic layer side and a lower saturation flux density than the saturation flux density of the whole of all the layers on the magnetic layer side.

Abstract: Magnetic tape (1) comprising a substrate, a magnetic layer provided on one side of the substrate and a backcoating layer (5) provided on the other side of the substrate, wherein the backcoating layer (5) is a layer capable of magnetic recording on which three or more servo tracks (10a, 10b, 10c) have magnetically been formed in parallel with the longitudinal direction of the tape, and the backcoating layer (5) has a higher coercive force than the coercive force of the whole of all the layers on the magnetic layer side and a lower saturation flux density than the saturation flux density of the whole of all the layers on the magnetic layer side.

Abstract: A magnetic tape having formed on its backcoating layer 5 a recess 10 of prescribed shape capable of yielding an optical contrast to provide optical information with which servo tracking of data tracks on the magnetic layer is effected, the recess having a depth of 0.05 to 1 .mu.m and a width of 0.25 to 30 .mu.m, and the backcoating layer 5 having an arithmetic mean roughness Ra of 4 to 20 nm.