Patent ID: 7718338
Filing Date: 2010-05-18
Classification: G03G

Abstract:
1. A charge control resin characterized by containing a copolymer which comprises, as at least partial structures thereof, all units represented by the following formulas (1) to (3); in said copolymer, the total content of the units represented by the following formulas (1) and (2) being, on the basis of the number of units, in a proportion of: Units represented by the following formulas (1) and (2): other unit(s)=3:97 to 15:85; and in said copolymer, the content of the unit represented by the following formula (1) and that of the unit represented by the following formula (2) being, on the basis of the number of units, in a proportion of: Unit represented by the following formula (1): unit represented by the following formula (2)=50:50 to 95:5: wherein R wherein R