公开(公告)号：US20220084550A1

公开(公告)日：2022-03-17

申请号：US17421409

申请日：2019-12-02

申请人： SONY GROUP CORPORATION

发明人： TOMOE OZAKI ,  JUNICHI TACHIBANA ,  TOMOE SATO ,  RYOICHI HIRATSUKA ,  HIROTO ATAGI ,  KAZUYA HASHIMOTO ,  YOICHI KANEMAKI ,  YUUKO KAMOSHITA ,  HIKARU TERUI

IPC分类号： G11B5/851 ,  G11B5/706 ,  G11B5/85 ,  G11B5/735 ,  G11B5/714 ,  G11B5/78 ,  G11B5/008

摘要： An object is to suppress or prevent a dimensional change of a magnetic recording tape.
The present technology provides a magnetic recording tape having a layer structure including a magnetic layer, a base layer, and a back layer in this order, in which a reinforcing layer containing a metal or a metal oxide is disposed on either a surface of the base layer on the magnetic layer side or a surface of the base layer on the back layer side, and a black area in an image obtained by binarizing an optical microscope image of a rectangular region of 64 μm×48 μm of the reinforcing layer is 300 μm2 or less. Furthermore, the present technology also provides a magnetic recording tape having a layer structure including a magnetic layer, a base layer, and a back layer in this order, in which a reinforcing layer containing a metal or a metal oxide is disposed on either a surface of the base layer on the magnetic layer side or a surface of the base layer on the back layer side, and the number of black regions in an image obtained by binarizing an optical microscope image of a rectangular region of 64 μm×48 μm of the reinforcing layer is 70 or less.