Method and device for reproducing electronically-stored data using a laser-reflecting helical thread on a prom surface

摘要

Method and device for reproducing electronically-stored data onto one or more photosensitive layers. The stored data is emitted from a radiation source in the form of one or more parallel beams of electrical signal pulses which are reflected by a moving mirror surface onto the photosensitive layer(s). The invention comprises providing the moving mirror surface in the form of one or more helical walls or elevations present on the surface of a rotating cylinder.