BINDER FOR ELECTROPHOTOGRAPHIC TONER

摘要

PURPOSE:To obtain storage stability suited for high speed fixing by causing a copolymer of a vinyl monomer contg, glycidyl groups and an other vinyl monomer and a cross-linkable compd. having functional group that can react with the glycidyl groups when heated to react thereby forming a binder. CONSTITUTION:The material obtd. by compounding a copolymer prepd. by copolymerization of 0.1-5.0wt% a vinyl monomer contg. glycidyl groups or a vinyl monomer contg. beta-methyl glycidyl groups and 95-99wt% an another vinyl monomer and having >=30 deg.C Tg, and a cross-linkable compd. having at least 1 kind and >=2 pieces of functional groups that can react with the above-mentioned glycidyl groups and beta-methyl glycidyl groups when heated in one molecule in such a way that the above-mentioned functional groups is contained at 0.3- 1.5 equiv. based on the glycidyl groups and beta-methyl glycidyl groups in the above-described copolymer and causing both to react is used as a binder.