Title:
二軸配向ポリエステルフィルムおよび磁気記録媒体
Document Type and Number:
Japanese Patent JP6866703
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To stably provide a biaxially oriented polyester film that is smooth and excellent in travelling property and winding property, and gives a high-density magnetic recording medium excellent in electromagnetic conversion characteristics when stored as a magnetic recording medium for a long period of time.SOLUTION: The biaxially oriented polyester film shows, in one of outermost surfaces (A surface) of the biaxially oriented polyester film, a maximum power spectral density (PSD-Xa) of 1,000 to 50,000 nmin a width direction in a region where a wavelength is less than 10 μm, and in the opposite outermost surface (B surface), a maximum power spectral density (PSD-Xb) of 150,000 to 500,000 nmin the width direction in a region where a wavelength is less than 10 μm.SELECTED DRAWING: None
Inventors:
Nakamori Yukari
Takuji Higashioji
Takuji Higashioji
Application Number:
JP2017048199A
Publication Date:
April 28, 2021
Filing Date:
March 14, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
C08J5/18; G11B5/73
Domestic Patent References:
| JP2007294087A | ||||
| JP2017002303A | ||||
| JP2001341265A | ||||
| JP2004103137A | ||||
| JP2016192248A | ||||
| JP2002251713A |
Foreign References:
| WO2007114395A1 | ||||
| CN104766613A |
Other References:
パワースペクトル密度(PSD) [ONLINE],米国,ブルカー株式会社,2021年 2月25日,[2021年2月25日検索],インターネット,,URL,https//nanophys.kth.se/facilities/nfl/afm/icon/bruker-help/Content/SoftwareGuide/Offine/AnalysisFunct/PowerSpectralDens.htm