Magnetic printing process and apparatus

Magnetic printing process and apparatus

Magnetic printing process and apparatus

Magnetic printing process and apparatus

Magnetic printing process and apparatus

Magnetic recording apparatus and magnetic recording medium with

Magnetic recording apparatus with adjustable line density

Magnetic recording arrangement for thermographic printing appara

Magnetic recording device

Magnetic recording device

Magnetic recording device

Magnetic recording device using magnetic fluid developing agent

Magnetic recording head

Magnetic recording head and method for manufacturing

Magnetic recording head array for longitudinal magnetic printing

Magnetic recording heads

Magnetic recording medium

Magnetic recording medium and magnetic recording method

Magnetic tapes and processes

Magnetic transducer including a plurality of heads and method fo