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Magnetic Recording Head Patent Published Online

Strategic Insights

— 1 min read

A patent has been published online for a magnetic recording head invented by Biskeborn, Robert G.; Liang, Jason; Lo, Calvin S.; Ting, Andrew C. The magnetic head is designed for use in data storage systems, specifically magnetic tape recording systems. The invention addresses the issue of increasing data density on a medium while maintaining high performance and minimizing spacing between the magnetic head and the tape.

Key Takeaways:

  • The magnetic recording head includes a module with both read and write transducers positioned towards a media-facing side of the module.
  • The read and write transducers are selected from a group consisting of piggyback read-write transducers, merged read-write transducers, interleaved read and write transducers, and an array of write transducers flanked by servo read transducers.
  • The write transducers include write poles with media-facing sides having negative, zero, or near-zero recession from a plane extending along the media-facing side of a substrate of the module.
  • The read transducers each have at least one shield, with a media-facing side of the shield more recessed from the plane than the write poles.
  • The patent is assigned to International Business Machines Corporaton (Armonk, NY) and was originally filed on August 31, 2012.
  • The magnetic head according to one embodiment includes a pair of read and write transducers selected from a group consisting of piggyback read-write transducers, and merged read-write transducers.
  • Any of these embodiments may be implemented in a magnetic data storage system such as a tape drive system.

Statistics:

  • The patent was published online on April 7, 2015.
  • The patent number is 9001463.
  • The invention relates to magnetic recording heads having protected reader sensors and near zero recessed write poles.
  • The patent is assigned to International Business Machines Corporaton.

Sources:

  • Biskeborn, Robert G., Liang, Jason, Lo, Calvin S., Ting, Andrew C.. Magnetic Recording Head Having Protected Reader Sensors and near Zero Recessed Write Poles. U.S. Patent Number 9001463, filed August 31, 2012, and published online on April 7, 2015. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9001463.PN.&OS=PN/9001463RS=PN/9001463

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