Magnetic recording cartridge
US10803904B1 · kind B1 · utility
27Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2019 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Jul 3, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/727
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording cartridge includes a magnetic recording medium of which an average thickness tT is tT≤5.6 μm, a dimensional change amount Δw in a width direction with respect to a tension change in a longitudinal direction is 660 ppm/N≤Δw, and a squareness ratio in a vertical direction is 65% or more, in which the magnetic recording medium is accommodated in a state of being wound around a reel and (a servo track width on an inner side of winding of the magnetic recording medium)−(a servo track width on an outer side of winding of the magnetic recording medium)>0 is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.