Head system, recording and reproduction system, and magnetic recording method

A head system for performing azimuth recording on a recording medium by use of a plurality of recording heads, wherein:

• said head system comprises a first recording head A including a plurality of first magnetic gaps A1, A2 having a first azimuth angle, and a second recording head B including a plurality of second magnetic gaps B1, B2 having a second azimuth angle different from said first azimuth angle;
• and
• a positional relationship between said first and second magnetic gaps is so determined that in relation to each magnetization pattern formed on said recording medium by said first magnetic gaps of said first recording head, side edge portions in the formation direction of said patterns are overwritten by said second magnetic gaps of said second recording head, wherein the height of the lower edge portion of the gap A1 is about the same as the height of a central portion of the gap B2 and the height of a lower edge portion of the gap A2 is about the same as the height of a central portion of the gap B1, and wherein
• said first and second recording heads are thin-film heads, and a single head chip constituting each said recording head is provided with a plurality of magnetic gaps and wherein
• said first and second recording heads are mounted on a rotary drum, and each of said magnetization patterns formed on said recording medium is an inclined track, wherein said overwriting is conducted with such a positional relationship that a side edge portion of said magnetization pattern in the formation direction of said magnetization pattern formed by each said first magnetic gap of said first recording head coincides substantially with the center of each magnetization pattern formed by said second recording head, wherein, as for the height relationship between the gaps A1 and A2, a slight clearance is provided between the upper edge of A1 and the lower edge of A2, or the upper edge of A1 and the lower edge of A2 overlap on each other, so that when there is a slight clearance between the upper edge of A1 and the lower edge of A2, the magnetization patterns formed on the tape by the magnetic gaps overlap on each other.

A recording and reproduction system for performing azimuth recording on a tape form recording medium by a plurality of recording heads, said system comprising a head system having a plurality of said recording heads, and a tape feeding means for feeding said tape form recording medium, wherein

• said head system comprises a first recording head A including a plurality of magnetic gaps A1, A2 having a first azimuth angle, and a second recording head B including a plurality of magnetic gaps B1, B2 having a second azimuth angle different from said first azimuth angle, and
• a positional relationship between said magnetic gaps is so determined that in relation to each magnetization pattern formed on said tape form recording medium by said magnetic gaps of said first recording head, side edge portions in the formation direction of said patterns are overwritten by said magnetic gaps of said second recording head, wherein the height of the lower edge portion of the gap A1 is about the same as the height of a central portion of the gap B2 and the height of a lower edge portion of the gap A2 is about the same as the height of a central portion of the gap B1, and, wherein
• said first and second recording heads are thin-film heads, and a single head chip constituting each said recording head is provided with a plurality of magnetic gaps and wherein said first and second recording heads are mounted on a rotary drum, and each of said magnetization patterns formed on said recording medium is an inclined track, wherein
• said overwriting is conducted with such a positional relationship that a side edge portion of said magnetization pattern in the formation direction of said magnetization pattern formed by each said magnetic gap of said first recording head coincides substantially with the center of each magnetization pattern formed by said second recording head, and wherein, as for the height relationship between the gaps A1 and A2, the upper edge of A1 is at the same height as the lower edge of A2, so that when the upper edge of A1 is at the same height as the lower edge of A2 side edges of magnetization patters formed on the tape by the magnetic gaps coincide with each other at the boundary therebetween.

A recording and reproduction system for performing azimuth recording on a tape form recording medium by a plurality of recording heads, said system comprising a head system having a plurality of said recording heads, and a tape feeding means for feeding said tape form recording medium, wherein

• said head system comprises a first recording head A including a plurality of magnetic gaps A1, A2 having a first azimuth angle, and a second recording head B including a plurality of magnetic gaps B1, B2 having a second azimuth angle different from said first azimuth angle, and
• a positional relationship between said magnetic gaps is so determined that in relation to each magnetization pattern formed on said tape form recording medium by said magnetic gaps of said first recording head, side edge portions in the formation direction of said patterns are overwritten by said magnetic gaps of said second recording head, wherein the height of the lower edge portion of the gap A1 is about the same as the height of a central portion of the gap B2 and the height of a lower edge portion of the gap A2 is about the same as the height of a central portion of the gap B1, and, wherein
• said first and second recording heads are thin-film heads, and a single head chip constituting each said recording head is provided with a plurality of magnetic gaps and wherein said first and second recording heads are mounted on a rotary drum, and each of said magnetization patterns formed on said recording medium is an inclined track, wherein
• said overwriting is conducted with such a positional relationship that a side edge portion of said magnetization pattern in the formation direction of said magnetization pattern formed by each said magnetic gap of said first recording head coincides substantially with the center of each magnetization pattern formed by said second recording head, wherein, as for the height relationship between the gaps A1 and A2, a slight clearance is provided between the upper edge of A1 and the lower edge of A2, or the upper edge of A1 and the lower edge of A2 overlap on each other, so that when there is a slight clearance between the upper edge of A1 and the lower edge of A2, the magnetization patterns formed on the tape by the magnetic gaps overlap on each other.

A magnetic recording method for performing azimuth recording on a recording medium by use of a plurality of recording heads, comprising the steps of:

• forming first magnetization patterns on said recording medium by a first recording head A comprising a plurality of magnetic gaps A1, A2 having a first azimuth angle;
• and
• forming second magnetization patterns on said recording medium by overwriting side edge portions in the formation direction of said first magnetization patterns by a second recording head B comprising a plurality of magnetic gaps B1, B2 having a second azimuth angle different from said first azimuth angle, wherein said first and second recording heads are mounted on a rotary drum, and each of said magnetization patterns formed on said recording medium is an inclined track, and
• said overwriting is conducted with such a positional relationship that a side edge portion in the formation direction of said first magnetization pattern coincides substantially with the center in the width direction of said second magnetization pattern, and wherein the height of the lower edge portion of the gap A1 is about the same as the height of a central portion of the gap B2 and the height of a lower edge portion of the gap A2 is about the same as the height of a central portion of the gap B1, wherein, as for the height relationship between the gaps A1 and A2, the upper edge of A1 is at the same height as the lower edge of A2, so that when the upper edge of A1 is at the same height as the lower edge of A2 side edges of magnetization patters formed on the tape by the magnetic gaps coincide with each other at the boundary therebetween.

A magnetic recording method for performing azimuth recording on a recording medium by use of a plurality of recording heads, comprising the steps of:

• forming first magnetization patterns on said recording medium by a first recording head A comprising a plurality of magnetic gaps A1, A2 having a first azimuth angle;
• and
• forming second magnetization patterns on said recording medium by overwriting side edge portions in the formation direction of said first magnetization patterns by a second recording head B comprising a plurality of magnetic gaps B1, B2 having a second azimuth angle different from said first azimuth angle, wherein said first and second recording heads are mounted on a rotary drum, and each of said magnetization patterns formed on said recording medium is an inclined track, and
• said overwriting is conducted with such a positional relationship that a side edge portion in the formation direction of said first magnetization pattern coincides substantially with the center in the width direction of said second magnetization pattern, and wherein the height of the lower edge portion of the gap A1 is about the same as the height of a central portion of the gap B2 and the height of a lower edge portion of the gap A2 is about the same as the height of a central portion of the gap B1, wherein, as for the height relationship between the gaps A1 and A2, a slight clearance is provided between the upper edge of A1 and the lower edge of A2, or the upper edge of A1 and the lower edge of A2 overlap on each other, so that when there is a slight clearance between the upper edge of A1 and the lower edge of A2, the magnetization patterns formed on the tape by the magnetic gaps overlap on each other.