Hewlett-packard Development Company, L.P.

Quantum Corporation

Hewlett Packard Enterprise Development LP

Geoff Spratt

Mike Alan Holmberg

Brian Brong

Paul W Poorman

Richard H Dee

Lawrence A Hansen

Steven L Brittenham

Michael Anthony Ellis

Eric Petersen

Robert Brummet

Scott A Swanbeck

Mike Sharrock

Saiman Kusin

A system including a magnetic tape processing system that includes a read/write head to write to a top surface of a magnetic tape. The read/write head provides a write head field gradient of at least 40 Oersteds per nanometer at the top surface of the magnetic tape. The magnetic tape processing system and the read/write head provide a track density of greater than 8000 tracks per inch, a bit density of greater than 440 kilo-bits per inch, and an aspect ratio of less than 70.

Magnetic tape processing

Techniques for operating tape heads are provided. In an example, a method includes detecting a potential at a sensor region, determining a target potential using a transfer function, and applying the target potential to an effector region.

Magnetic tape heads

Methods and apparatus are provided related to magnetic recording tape. Respective voltage sources are coupled to respective magnetic head components of a tape recording apparatus. Circuitry controls each voltage source independently in accordance with identity information for a magnetic tape, relative humidity within the tape recording apparatus, or other factors. Chemical migration from the tape, and/or plating or erosion of elements of the tape recording apparatus are substantially reduced or eliminated according to the present teachings.

Reduction of degradation of magnetic tape apparatus

Techniques to use a model associating condition of a tape head with tape head usage are described. The tape head is for use in a magnetic tape drive. In examples, a condition of the tape head is determined using a model. In examples, the model fits determined values of the condition parameter.

Determining tape head condition

Methods and apparatus are provided related to magnetic recording tape. One or more ion emitters are disposed in non-contacting proximity to a passing recording tape. Static electric charges born on the tape are neutralized prior to passing the tape in contact with a read-write head. Migration of chemical constituency from the tape to the head is prevented or significantly reduced with a corresponding elimination or reduction of related problems.

Neutralization of static charge on magnetic tape

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Meridian, ID, United States of America

Geoff Spratt