A study of the thermal transfer process

The thermal transfer process takes place at high temperatures, and the temperature which freezes the magnetization is distributed in some wide range depending upon the signal field strength, but most magnetization is frozen between 115°C and 120°C. The time constant of the changing magnetization and demagnetization field from frozen magnetization are very significant in the thermal transfer process. Because of the demagnetization field, thermoremanent magnetization becomes small and is limited to only the tape surface. The computed magnetization pattern of the slave tape indicates that the transfer characteristics of thermoremanent magnetization are similar to that of the anhysteretic method. In the thermoremanent magnetization process the magnetization recovers about 3 times the high temperature magnitude when it is cooled to room temperature. Consequently, a high output can be obtained by thermoremanent magnetization.