Magnetic tape cartridge, manufacturing method of magnetic tape cartridge, manufacturing device of magnetic tape cartridge, recording and reproducing apparatus, and control method

Patent metadata

Field	Value
Publication number	US-10629228-B2
Application number	US-201916414762-A
Country	US
Kind code	B2
Filing date	May 16, 2019
Priority date	May 28, 2018
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A magnetic tape cartridge includes: a magnetic tape including plural servo bands on which servo patterns are recorded, and a data band that is provided between the servo bands and on which data is recorded; and a recording medium on which servo band interval relevant information is recorded, the servo band interval relevant information including an interval of adjacent servo recording elements of plural servo recording elements in a direction corresponding to a width direction of the magnetic tape, each of the plural servo recording elements records the servo pattern on each of the plural servo bands.

First claim

What is claimed is:

1. A magnetic tape cartridge comprising:
a magnetic tape including a plurality of servo bands on which servo patterns are recorded, and a data band that is provided between the servo bands and on which data is recorded; and
a recording medium on which servo band interval relevant information is recorded, the servo band interval relevant information including an interval of adjacent servo recording elements of a plurality of servo recording elements in a direction corresponding to a width direction of the magnetic tape, wherein each of the plurality of servo recording elements records the servo pattern on each of the plurality of servo bands,
wherein the servo band interval relevant information further includes a tension of the magnetic tape, in a case of recording data on the data band, an interval of servo reproducing elements of a tape drive which reproduce the adjacent servo patterns in a direction corresponding to the width direction, in a case of recording the data on the data band, and an interval between the adjacent servo bands in the width direction detected, in a case of recording the data on the data band.

2. The magnetic tape cartridge according to claim 1 ,
wherein the servo band interval relevant information is recorded on the recording medium on each of a plurality of different positions of the servo pattern along the width direction.

3. The magnetic tape cartridge according to claim 1 ,
wherein the servo band interval relevant information is recorded on the recording medium on each of a plurality of different positions of the servo pattern along the width direction.

4. A manufacturing method of a magnetic tape cartridge including a magnetic tape including a plurality of servo bands on which servo patterns are recorded, and a data band which is provided between the servo bands and on which data is recorded, and a recording medium, the method comprising:
recording servo band interval relevant information on the recording medium, the servo band interval relevant information including an interval of adjacent servo recording elements of a plurality of servo recording elements in a direction corresponding to a width direction of the magnetic tape, each of the plurality of servo recording elements records the servo pattern on each of the plurality of servo bands,
wherein the servo band interval relevant information further includes a tension of the magnetic tape, in a case of recording data on the data band, an interval of servo reproducing elements of a tape drive which reproduce the adjacent servo patterns in a direction corresponding to the width direction, in a case of recording the data on the data band, and an interval between the adjacent servo bands in the width direction detected, in a case of recording the data on the data band.

5. A manufacturing device of a magnetic tape cartridge including a magnetic tape including a plurality of servo bands on which servo patterns are recorded, and a data band that is provided between the servo bands and on which data is recorded, and a recording medium, the device comprising:
a recording unit that records servo band interval relevant information on the recording medium, the servo band interval relevant information including an interval of adjacent servo recording elements of a plurality of servo recording elements in a direction corresponding to a width direction of the magnetic tape, each of the plurality of servo recording elements records the servo pattern on each of the plurality of servo bands,
wherein the servo band interval relevant information further includes a tension of the magnetic tape, in a case of recording data on the data band, an interval of servo reproducing elements of a tape drive which reproduce the adjacent servo patterns in a direction corresponding to the width direction, in a case of recording the data on the data band, and an interval between the adjacent servo bands in the width direction detected, in a case of recording the data on the data band.

6. A recording and reproducing apparatus of a magnetic tape cartridge including a magnetic tape including a plurality of servo bands on which servo patterns are recorded, and a data band that is provided between the servo bands and on which data is recorded, and a recording medium on which servo band interval relevant information is recorded, the servo band interval relevant information including an interval of adjacent servo recording elements of a plurality of servo recording elements in a direction corresponding to a width direction of the magnetic tape, each of the plurality of servo recording elements records the servo pattern on each of the plurality of servo bands, the recording and reproducing apparatus comprising:
a magnetic head that includes a servo reproducing element which reads a servo pattern recorded on a servo band, and a recording and reproducing element that performs recording and reproducing of data with respect to the data band;
a detection unit that detects the interval of the adjacent servo bands in the width direction from a read result of the servo pattern by the servo reproducing element;
a deriving unit that derives a tension of the magnetic tape in accordance with a difference between an interval of the servo recording elements in a direction corresponding to the width direction of the magnetic tape included in the servo band interval relevant information and the interval detected by the detection unit; and
a control unit that controls the tension of the magnetic tape to be the tension derived by the deriving unit, in a case of recording data on the data band by the recording and reproducing element.

7. The recording and reproducing apparatus according to claim 6 ,
wherein the control unit performs a control of recording the servo band interval relevant information on the recording medium by adding the tension derived by the deriving unit, the interval of the adjacent servo reproducing elements in the direction corresponding to the width direction, and the interval detected by the detection unit to the servo band interval relevant information.

8. A recording and reproducing apparatus of a magnetic tape cartridge including a magnetic tape including a plurality of servo bands on which servo patterns are recorded, and a data band that is provided between the servo bands and on which data is recorded, and a recording medium, on which servo band interval relevant information is recorded, the servo band interval relevant information including an interval of adjacent servo bands in a width direction of the magnetic tape detected in a case of recording data on the data band, a tension of the magnetic tape in a case of recording data on the data band, and an interval of the adjacent servo reproducing elements in a direction corresponding to the width direction, the recording and reproducing apparatus comprising:
a magnetic head that includes a servo reproducing element which reads a servo pattern recorded on a servo band, and a recording and reproducing element that performs recording and reproducing of data with respect to the data band;
a detection unit that detects the interval of the adjacent servo bands in the width direction from a read result of the servo pattern by the servo reproducing element;
a deriving unit that derives a tension of the magnetic tape for minimizing a difference between a deviation amount from an ideal value of an interval of the servo bands in the width direction obtained from the interval between the adjacent servo bands in the width direction, the tension, and the interval between the adjacent servo reproducing elements in a direction corresponding to the width direction included in the servo band interval relevant information, and a deviation amount obtained

Assignees

• Fujifilm Corp

Inventors

• Kaneko Tetsuya
• Kagawa Yusuke

Classifications

• G11B5/78

  Tape carriers · CPC title

• G11B5/00813 Primary

  magnetic tapes · CPC title

• G11B5/584 Primary

  for track following on tapes · CPC title