HIGH SPEED PRINTER OF MULTIPLE COPIES FOR OUTPUT INFORMATION

摘要

A method and apparatus for high speed printout of multiple copies wherein a film or layer of memory semiconductor material is scanned by energy beam means to permanently store therein the information to be reproduced. The film is capable of having discrete portions thereof reversibly altered between a high resistance blocking condition and a low resistance conducting condition, the film normally being in one condition. The film of semiconductor material forms an information storage surface on a rotating drum, and energy pulses are synchronized with and applied to selected portions of the semiconductor material on the drum surface for altering the film at said select portions thereof from said one normal condition to the other condition to store the information in the material forming the film. Computer means are provided to convert bits of data input information into energy pulses and to synchronize these pulses wit predeterminable topographic sites on the semiconductor film surface where the pulses impinge and alter the condition of the surface to permanently store the information. The retrieval of the stored information is non-destructive to the stored information and high speed print-out of multiple copies is possible without further need of the computer means.