| 摘要 |
PURPOSE:To obtain a developer stable in triboelectrifiability, sharp and uniform and controllable in distribution of triboelectrified amt., by incorporating a guanidine deriv. CONSTITUTION:The guanidine deriv. to be added to the developer is represented by the formula in which each of R1, R2, R3 is independent of each other, and each is H, halogen, alkyl, alkenyl, alkynyl, alkoxy, ester, alkoxycarbonyl, optionally substd. phenyl, OH, SH, alkylmercapto, amino, imino, phenylimino, cyano, optionally substd. azo, diazoamino, ureido, oxo, or a group introduced by removing one H from a hetero ring contg. N, S, or O. |
