Title:
MAGNETIC RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/037612
Kind Code:
A1
Abstract:
The main purpose of the present technology is to improve the reliability of magnetic recording tape by controlling the distribution of a binder in an underlayer. The present technology provides a magnetic recording medium that comprises a magnetic layer, an underlayer, and a base layer in the stated order, the underlayer containing a chlorine-containing binder, and the thickness of a portion of the underlayer where the chlorine count number is at or above a threshold value being 130 nm or less. [Threshold value] = [average chlorine count number in underlayer] + 6 × [standard deviation obtained at calculation of average chlorine count number] The present technology also provides a magnetic recording medium that comprises a magnetic layer, an underlayer, and a base layer in the stated order, the underlayer containing a chlorine-containing binder, and the thickness of a portion of the underlayer where the chlorine count number is at or above the threshold value being 12% or less with respect to the thickness of the underlayer.
Inventors:
YAMAGA MINORU (JP)
Application Number:
PCT/JP2022/010704
Publication Date:
March 16, 2023
Filing Date:
March 10, 2022
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
G11B5/70; G11B5/706; G11B5/738; G11B5/84
Foreign References:
| JP2007265547A | 2007-10-11 | |||
| JP2001273623A | 2001-10-05 | |||
| JP2000155935A | 2000-06-06 | |||
| JP2000090431A | 2000-03-31 |
Attorney, Agent or Firm:
WATANABE Kaoru (JP)
Download PDF:
Previous Patent: DRIVE DEVICE, DRIVE METHOD, AND LIGHT-EMITTING DEVICE
Next Patent: DISPLACEMENT DETECTION DEVICE AND METHOD
Next Patent: DISPLACEMENT DETECTION DEVICE AND METHOD