| 摘要 |
PURPOSE:To obtain a blue toner superior in light transmittance by using a specified rhodanine compound as a colorant. CONSTITUTION:The colorant to be used as the colorant is one of the rhodanine derivatives represented by formula I in which R<1> is optionally substituted alkyl, such aralkyl, such aryl, or amino, and each of R<2> is H, 1-6C lower alkyl, optionally substituted aryl, or hydroxy. These rhodanine compounds are remarkably characterized by introducing the quinoline group through the ethanediylidene group to the 5-position of the rhodanine ring, thus permitting the obtained toner to be improved in compatibility with a binder resin, and superior in blue light transmittance, and humidity resistance, and consequently, free from humidity dependency. |
