| abstract |
PROBLEM TO BE SOLVED: To provide a data cartridge capable of improving running durability in a high humidity environment. A data cartridge includes a magnetic recording medium including a holding body, a base layer, and a recording layer. A triangular pyramid diamond indenter with a measurement environment of 23 ° C./50% RH and a load range of 0 to 200 μN and a ridge angle of 142.3 ° is pushed in perpendicularly to the recording surface, and the maximum pushing depth h and the ratio of permanent strain to elastic recovery d ( When the permanent strain / elastic recovery) was obtained, the maximum pushing depth h was 88 nm ≦ h ≦ 140 nm, and the ratio d of the permanent strain to the elastic recovery (permanent strain / elastic recovery) was 0.97 ≦ d. ≦ 1.23. [Selection diagram] Fig. 1 |