Cleaning apparatus for a magnetographic recording head

Magnetic image recording device

Magnetic imaging transfer process

Magnetic latent image forming apparatus

Magnetic printer

Magnetic recording arrangement for thermographic printing appara

Magnetic recording device

Magnetic recording head

Magnetic recording medium and magnetic recording method

Magnetizing apparatus for a magnetographic printer

Method of erasing magnetic latent image in thermo-magnetic recor

Method of optically turning a magneto-optic medium having in ord

Printer and method of printing

Printing apparatus

Thermal magnetic tape duplication method employing a reflex imag

Thermo-magnetic recording device

Thermo-magnetic recording device

Thermomagnetic printer

Thermomagnetic recording

Thermomagnetic recording apparatus