| 摘要 |
<p>A laser device for manufacturing printing plates comprises a system of synchronous scanning of a pattern-master and of a plate material, an optoelectronic reading unit (16) and a generator (17) of raster impulses optically interconnected with the system of synchronous scanning and connected to an electronic circuit providing for generation of sequence of signals, controlling parameters of the laser radiation, which allows to obtain, during a single technological cycle, both the line and half-tone structures on the plate material, that electronic circuit comprising, connected in parallel, a line and raster channels, a raster-line commutator (28), switching automatically the line and raster channels, a unit (31) of fixation of boundaries of half-tone images kinematically interconnected with the system of synchronous scanning of the pattern-master and the plate material and generating commands to the raster-line commutator (28), and comprises as well a laser-optical system of forming images on the surface of the plate material with the use of a laser modulator (42). </p> |
