Magnetic recording medium, tape cartridge, and data processing method

2:

• The magnetic recording medium according to claim 1, having a squareness ratio of 65% or more in a perpendicular direction thereof.

3:

• The magnetic recording medium according to claim 1, wherein a magnetic layer side surface of the magnetic recording medium has arithmetic average roughness Ra of 2.5 nm or less.

4:

• The magnetic recording medium according to claim 1, wherein the magnetic layer has an average thickness tm of 80 nm or less.

5:

• The magnetic recording medium according to claim 1, wherein the base layer includes a polyester as a main component.

6:

• The magnetic recording medium according to claim 1, wherein a ratio of a total thickness of the magnetic layer, the underlayer, and the back layer to a thickness of the base layer is 0.38 or less.

7:

• The tape-shaped magnetic recording medium according to claim 1, wherein an amount of dimensional change of the magnetic recording medium in a width direction thereof between a state in which a tension of 0.5 N is applied to the magnetic recording medium in a longitudinal direction thereof and a state in which a tension of 1.0 N is applied to the magnetic recording medium in the longitudinal direction is 4.0 μm or more and 5.0 μm or less.

8:

• The magnetic recording medium according to claim 1, wherein the magnetic layer includes magnetic powder, and the magnetic powder contains hexagonal ferrite, F iron oxide, or Co iron oxide.

9:

• The magnetic recording medium according to claim 8, wherein the hexagonal ferrite contains at least one of Ba or Sr, and the ε iron oxide contains at least one of Al or Ga.

(canceled)

11:

• The magnetic recording medium according to claim 1, having a friction coefficient ratio (μC(1000)/μC(5)) of 1.0 to 2.0, wherein μC(5) represents a coefficient of dynamic friction at fifth reciprocation in a case where the magnetic recording medium in a state where a tension of 0.6 N is applied to the magnetic recording medium in a longitudinal direction thereof is reciprocatedly slid five times on a magnetic head, and μC(1000) represents a coefficient of dynamic friction at 1000th reciprocation in a case where the magnetic recording medium is reciprocated 1000 times on the magnetic head.

12:

• The magnetic recording medium according to claim 1, wherein the pores have an average diameter of 6 nm or more and 10 nm or less.

13:

• The magnetic recording medium according to claim 1, wherein the pores have an average diameter of 7 nm or more and 9 nm or less.

14:

• The magnetic recording medium according to claim 1, wherein the base layer has an average thickness of 4.2 μm or less.

15:

• The magnetic recording medium according to claim 1, wherein the back layer has an average thickness of 0.5 μm or less.

16:

• The magnetic recording medium according to claim 1, wherein the magnetic layer includes magnetic powder, and the magnetic powder has an average aspect ratio of 1.0 or more and 3.5 or less.

18:

• The tape cartridge according to claim 17, wherein the adjustment information includes dimensional information in a width direction at a plurality of positions in the longitudinal direction of the magnetic recording medium.

20:

• The data processing method according to claim 19, wherein in the data processing step, the tension applied to the magnetic recording medium in the longitudinal direction is adjusted on a basis of the dimensional information and initial dimensional information acquired in advance before the dimensional information acquiring step is performed.

21:

• The data processing method according to claim 20, wherein in the data processing step, the tension applied to the magnetic recording medium in the longitudinal direction is adjusted such that the dimensional information corresponds to the initial dimensional information.

22:

• The data processing method according to claim 19, further comprising
• an information acquiring step of acquiring at least one of environmental information around the magnetic recording medium or traveling condition information, wherein
• in the data processing step, the tension applied to the magnetic recording medium in the longitudinal direction is adjusted on a basis of the dimensional information and at least one of the environmental information or the traveling condition information.