PROCESS OF INFORMATION ENTRY ON FILM AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 1995 - IPC

FIELD: movie and photoequipment. SUBSTANCE: process involves information entry on film by element-by-element local evaporation of emulsion layer from film base under action of laser radiation formed in compliance with controlling signal. Pulse laser emits in wave length range from 0.40 up to 0.53 μm pulses having duration 20-200 ms and repetition frequency 5-200 kHz. Device for implementation of process has pulse laser 1, modulator 2, collimator 3, optical deflection system 4, focusing system 5, film channel 6 of film-pulling mechanism 7, system of control over laser beam program unit 8 based on computer with means 9 for information input, attenuator 10, optical control unit 11, additional laser 12. EFFECT: enhanced efficiency of process. 2 cl, 1 dwg