Patent ID: 7019722

Claim:
A recording method for a photo addressable recording medium including an optical switching element and a display element, the optical switching element including a charge generating layer and a charge transport layer, a resistance component of the optical switching element being controlled at least depending on a direction of an applied voltage, the method comprising: applying a periodic voltage to the display element for a period duration during both the case where the optical switching element is irradiated with light and the case where the optical switching element is not irradiated with light so that the periodic voltage applied to the display element for the period duration is greater than a threshold voltage of the display element to turn on a display thereof, wherein, in the case where the optical switching element is irradiated with light, after controlling an electrical charge amount of the display element by means of controlling a ratio of the resistance component depending at least on the direction of the periodic voltage and turning off the periodic voltage applied to the recording medium, the ratio of the resistance component is controlled by flowing charges generated by the charge generating layer through the charge transport layer, the display is turned off by applying a residual voltage to the display element, the residual voltage corresponding to the electrical charge amount and being effectively smaller than the threshold voltage and larger than a ground potential for a residual duration corresponding to a charge storage time greater than the period duration.