The
record condition extraction
system (1) of a
dielectric recording medium is intended to obtain an applied
voltage and an applied time length to be recorded when recording information in the
dielectric recording medium. The
record condition extraction
system (1) is provided with: an applied
voltage setting device (11); an applied time length setting device (12); a
record control device (13); an applied
voltage / applied time length record device (14); a record device (15); a dot
radius measurement device (16); a dot
radius record device (17); an optimum dot
radius detection device (18); a record condition determination device (19); and an
output device (20). The applied voltage setting device (11) and the applied time length setting device (12) set a voltage and a time applied to a probe (31) of the record device (15), respectively. The dot radius of a polarization domain 38, which is recorded at the record device (15), is measured at the dot radius
measurement device (16), and the optimum polarization domain (38) is obtained at the optimum dot radius detection device (18). The applied voltage and the applied time length which have formed the polarization domain (38) are extracted as an optimum record condition.