Abstract
In the last ten years, offset printing has achieved the broadest application on the printing market due to its inherent advantages. Light sensitive offset plates for contact UV exposure are mainly used at present. The chemistry of these plates are based on the photoreactions of quinone diazides, diazo resins and radical photopolymers. For the further development of offset printing plates the improvement of the light sensitivity and extension of spectral sensitivity to the visible range is a market-driven requirement to realize transfer of computer stored informations by laser. For this requirement electrophotographic systems, systems based on silver halides and photoinduced polymerizations are most important. New literature data dealing with these systems in relation to printing plates are summarized.
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