| 摘要 |
<p>PURPOSE:To obtain a colorless electric charge regulating agent having negative charge imparting property, contg. no high toxicity metal, ensuring uniform dispersion in a resin because of satisfactory compatibility with the resin and excellent in negative charge imparting property and environmental stability by using an N-phenylglycine deriv. having an amido group. CONSTITUTION:This electrophotographic toner contains an N-phenylglycine deriv. represented by the general formula or its salt as an electric charge regulating agent having negative charge imparting property. In the formula, each of R1 and R2 is H, alkyl, aryl, alkoxy, alkoxyalkyl, alkoxyalkoxy, dialkylamino, alkylthio, nitro or halogen and R3 is alkyl or aryl. This toner is produced as follows; a bonding resin, a colorant and the compd. represented by the formula are prepd., a magnetic substance, an anti-offsetting agent and a lubricant are added if necessary and they are melted, mixed, solidified by cooling and pulverized.</p> |
