Patent ID: 6020102
Filing Date: 2000-02-01
Classification: G03G

Abstract:
A positive-chargeable toner comprising a binder resin, a colorant and a charge control agent, wherein;said binder resin contains a styrene copolymer and has an acid value of from 0.5 to 50.0 mg KOH/g; andsaid charge control agent has an imidazole derivative represented by the following Formula (1): ##STR16## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent a substituent selected from the group consisting of a hydrogen atom, an alkyl group, an aralkyl group and an aryl group, which are the same or different from one another and may further be substituted with a substituent; and X represents a connecting group selected from the group consisting of a phenylene group, a propenylene group, a vinylene group, an alkylene group and --CR.sub.5 R.sub.6 --, where R.sub.5 and R.sub.6 each represent a substituent selected from the group consisting of a hydrogen atom, an alkyl group, an aralkyl group and an aryl group.