Camera apparatus for recording data in a film magnetic recording

Details Camera apparatus for recording data in a film magnetic recording Camera apparatus for recording data in a film magnetic recording

1993-02-23

1994-05-17

Gellner, Michael L.

G03B 1724

Patent

active

053132378

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.

REFERENCES:
patent: 3409853 (1968-11-01), Guerth
patent: 3665513 (1972-05-01), Benson et al.
patent: 3982276 (1976-09-01), Roos
patent: 4363038 (1982-12-01), Fagling
patent: 4678299 (1987-07-01), Harvey
patent: 4860037 (1989-08-01), Harvey
patent: 4862200 (1989-08-01), Hicks
patent: 5021820 (1991-06-01), Robison et al.

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