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公开(公告)号：US20160189739A1
公开(公告)日：2016-06-30
申请号：US14757555
申请日：2015-12-24
Applicant: FUJIFILM CORPORATION
Inventor： Norihito Kasada , Masahito Oyanagi , Toshio Tada , Kazuyuki Kitada
CPC classification number: G11B5/71 , G11B5/7305 , G11B5/78 , G11B5/8404 , G11B5/842
Abstract: Provided is a magnetic tape, which comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder and binder; wherein a total thickness of the magnetic tape is less than or equal to 4.80 μm; at least the magnetic layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide; and a C—H derived carbon, C, concentration calculated from a C—H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the magnetic layer side of the magnetic tape is greater than or equal to 45 atom %.
Abstract translation: 提供了一种磁带，其在非磁性载体上包括非磁性粉末和粘合剂的非磁性层，并且在非磁性层上包括含铁磁粉末和粘合剂的磁性层; 其中所述磁带的总厚度小于或等于4.80μm; 至少磁性层包含一种或多种选自脂肪酸和脂肪酸酰胺的组分; 和C-H衍生碳C，由C-H峰面积比计算出的C-H峰面积比在通过X射线光电子能谱获得的C1s光谱中以10度的光电子取出角在磁性层侧的表面上进行 的磁带大于或等于45原子％。
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公开(公告)号：US09711174B2
公开(公告)日：2017-07-18
申请号：US14757555
申请日：2015-12-24
Applicant: FUJIFILM CORPORATION
Inventor： Norihito Kasada , Masahito Oyanagi , Toshio Tada , Kazuyuki Kitada
CPC classification number: G11B5/71 , G11B5/7305 , G11B5/78 , G11B5/8404 , G11B5/842
Abstract: Provided is a magnetic tape, which comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder and binder; wherein a total thickness of the magnetic tape is less than or equal to 4.80 μm; at least the magnetic layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide; and a C—H derived carbon, C, concentration calculated from a C—H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the magnetic layer side of the magnetic tape is greater than or equal to 45 atom %.
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公开(公告)号：US09721605B2
公开(公告)日：2017-08-01
申请号：US14978834
申请日：2015-12-22
Applicant: FUJIFILM Corporation
Inventor： Masahito Oyanagi , Norihito Kasada , Toshio Tada , Kazuyuki Kitada
CPC classification number: G11B5/71 , G11B5/70 , G11B5/7305 , G11B5/78 , G11B5/8404 , G11B5/842
Abstract: Provided is a magnetic tape, which comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder and binder; wherein at least the magnetic layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide; a quantity of components selected from the group consisting of a fatty acid and a fatty acid amide per unit area of the magnetic tape among components that are extracted from a surface on the magnetic layer side of the magnetic tape is less than or equal to 15.0 mg/m2, and a concentration of carbon, C, that is obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on the surface on the magnetic layer side of the magnetic tape is greater than or equal to 50 atom %.
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