Description: 430 radiation imagery chemistry: process, composition, or product thereof / 430 radiation imagery chemistry: process, composition, or product thereof/(31) electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc., process, composition, or product (56) radiation-sensitive composition or product (75) radiation-conductive composition contains hetero ring (76) the hetero ring has at least nitrogen as a ring hetero atom (78) polycyclo ring system having the hetero ring as one of the cyclo systems (79) carbazole
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