| 摘要 |
<p>PURPOSE:To ensure high electrostatic chargeability and aging stability and to prevent the stain of a copy due to continuous copying by incorporating a metal compd. of a pamoacid compd. CONSTITUTION:This toner contains one or more kinds of metal compds. of a pamoacid compd. represented by formula I or II and obtd. by dimerizing optionally substd. hydroxynaphthalenecarboxylic acid with a methylene chain. In the formula I, II, one of R and R' is hydroxyl, the other is H and each of X and X' is H or an arbitrary substituent such as alkyl, amino or alkoxy. The metal compds. of the pamoacid compd. are metal complexes or salts each obtd. by bonding metal ions to the carboxyl and/or hydroxyl groups of the pamoacid compd. by ionic bond, coordinate bond, cobalent bond, etc.</p> |
