A theory of anhysteretic contact printing

The anhysteretic contact printing process is analyzed theoretically and the printing properties are presented in terms of the basic parameters of the printing system. The effect of "imaging" of the master and the slave magnetization due to a high permeability transfer head is taken into account. The transfer efficiency has "imaging loss," especially at long wavelengths due to this effect. Conditions which reduce this imaging loss are discussed. Good agreement between the theoretical calculations and the experimental results was obtained. It is shown that the perpendicular component of the slave magnetization cannot be ignored at short wavelengths even for the longitudinally particle-oriented slave tapes, as pointed out by Tjaden et al.