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Patent Searching and Data


Title:
MAGNETIC RECORDING TAPE AND METHOD FOR MANUFACTURING SAME, AND MAGNETIC RECORDING TAPE CARTRIDGE
Document Type and Number:
WIPO Patent Application WO/2019/159465
Kind Code:
A1
Abstract:
The purpose of the present technology is to provide a magnetic recording tape or the like, in which the tape can stably run at high speed while keeping the distance between a magnetic head and the tape small. The present technology provides a magnetic recording tape which is a tape provided with a multi-layered structure including at least a magnetic layer, wherein: the total thickness of the tape is 5.6 μm or less; a plurality of recessed sections are disposed on the surface of the magnetic layer; a value obtained by dividing the depth D1 of the recessed sections by the thickness D2 of the magnetic layer is 15% or more; the magnetic layer is vertically aligned, and the degree of vertical alignment is 65% or higher without demagnetizing field correction; a plurality of recessed sections having a depth greater than or equal to 20% of the thickness of the magnetic layer are formed in the magnetic layer; and the number of the recessed sections is 55 or more per 6,400 μm2 surface area of the magnetic layer. The present technology also provides a method for manufacturing the magnetic recording tape.

Inventors:
YAMAGA Minoru (1-7-1 Konan Minato-k, Tokyo 75, 〒1080075, JP)
IWAMA Takanobu (1-7-1 Konan Minato-k, Tokyo 75, 〒1080075, JP)
TAKAHASHI Jun (1-7-1 Konan Minato-k, Tokyo 75, 〒1080075, JP)
Application Number:
JP2018/042736
Publication Date:
August 22, 2019
Filing Date:
November 19, 2018
Export Citation:
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Assignee:
SONY CORPORATION (1-7-1 Konan, Minato-ku Tokyo, 75, 〒1080075, JP)
International Classes:
G11B5/78; G11B5/70; G11B5/706; G11B5/735; G11B5/738; G11B5/84; G11B23/023
Attorney, Agent or Firm:
WATANABE Kaoru (KUNPU INTELLECTUAL PROPERTY AGENTS, SUCCESS-SENGAKUJI BLDG. 3F 2-20-29, Takanawa, Minato-k, Tokyo 74, 〒1080074, JP)
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