Toner, charge-imparting material and composition containing substituted guanidine compound for electrophotography
First Claim
1. A positively chargeable dry toner for developing electrostatic images, comprising:
- a binder resin, a colorant or a magnetic material and a substituted guanidine compound having at least one substituent group, said substituted guanidine compound being represented by the following formula (I);
##STR7## wherein R1, R2, R3, R4 and R5 are the same or different groups including hydrogen atom, alkyl, cycloalkyl, alkenyl, aryl, aralkyl, alkaryl, and heterocyclic groups, of which a hydrogen atom may be further replaced by a substituent group, and at least one of R1, R2, R3, R4 and R5 is a group other than hydrogen, in which said substituted guanidine compound is contained in a proportion of 0.1 to 10 parts by weight per 100 parts by weight of said binder resin.
1 Assignment
0 Petitions
Accused Products
Abstract
A triboelectrically chargeable composition for use in development of electrostatic latent images. The composition contains a substituted guanidine compound having at least one substituent group. The substituted guanidine compound is preferably one represented by the formula ##STR1## wherein R1, R2, R3, R4 and R5 are the same or different groups including hydrogen atom, alkyl, cycloalkyl, alkenyl, aryl, aralkyl, alkaryl, and heterocyclic groups, of which a hydrogen atom may be further replaced by a substituent group, and at least one of R1, R2, R3, R4 and R5 is a group other than hydrogen. The composition is embodied typically as a positively chargeable toner and also as a charge-imparting material for charging a toner.
17 Citations
12 Claims
-
1. A positively chargeable dry toner for developing electrostatic images, comprising:
- a binder resin, a colorant or a magnetic material and a substituted guanidine compound having at least one substituent group, said substituted guanidine compound being represented by the following formula (I);
##STR7## wherein R1, R2, R3, R4 and R5 are the same or different groups including hydrogen atom, alkyl, cycloalkyl, alkenyl, aryl, aralkyl, alkaryl, and heterocyclic groups, of which a hydrogen atom may be further replaced by a substituent group, and at least one of R1, R2, R3, R4 and R5 is a group other than hydrogen, in which said substituted guanidine compound is contained in a proportion of 0.1 to 10 parts by weight per 100 parts by weight of said binder resin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a binder resin, a colorant or a magnetic material and a substituted guanidine compound having at least one substituent group, said substituted guanidine compound being represented by the following formula (I);
Specification