{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10497384","patent":{"patent_number":"US-10497384","title":"Magnetic tape device and reproducing method employing TMR reproducing head and magnetic tape with characterized magnetic layer","assignee":null,"inventors":[],"filing_date":"2018-02-20T00:00:00.000Z","publication_date":"2019-12-03T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B","G11B","G11B"],"num_claims":18,"abstract":"A magnetic tape device includes a magnetic tape; and a Tunneling Magnetoresistive (PAR) head as a reproducing head, in which the center line average surface roughness Ra measured regarding a surface of the magnetic layer of the magnetic tape is equal to or smaller than 2.0 nm, the logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding the surface of the magnetic layer is equal to or smaller than 0.050, and ΔSFD in a longitudinal direction of the magnetic tape calculated by Expression 1: ΔSFD=SFD25° C.−SFD−190° C. is equal to or smaller than 0.50, wherein, in Expression 1, the SFD25° C. is a switching field distribution SFD measured in a longitudinal direction of the magnetic tape at a temperature of 25° C., and the SFD−190° C. is a switching field distribution SFD measured in a longitudinal direction of the magnetic tape at a temperature of −190° C."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Magnetic tape device and reproducing method employing TMR reproducing head and magnetic tape with characterized magnetic layer","description":"A magnetic tape device includes a magnetic tape; and a Tunneling Magnetoresistive (PAR) head as a reproducing head, in which the center line average surface roughness Ra measured regarding a surface o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10497384","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-10497384","citation_suggestion":"Patentable. \"Magnetic tape device and reproducing method employing TMR reproducing head and magnetic tape with characterized magnetic layer\" (US-10497384). https://patentable.app/patents/US-10497384","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10497384","json":"https://patentable.app/api/llm-context/US-10497384","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:11:48.754Z"}