Camera apparatus for recording data in a film magnetic recording layer
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United States of America Patent
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-
May 17, 1994
Grant Date -
N/A
app pub date -
Feb 23, 1993
filing date -
Feb 23, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a camera, data is recorded onto a film magnetic layer by anhysteretic recording with a device comprised of a planar master medium attached to a ring core, the core a magnetic field gap formed therein at the point at which it is attached to the master medium. A slightly underdamped L/C resonant circuit is formed with excitation windings on the core to provide an alternating bias field to the master medium to effect the anhysteretic recording of the master data onto the film magnetic layer. Provision is made to ensure intimate contact between the master medium and the film magnetic layer while the film is stationary during the recording process.
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