| abstract |
(57) [Abstract] [Purpose] To provide a one-component toner for electrostatic image development capable of continuously maintaining a good image because of its excellent durability, without sleeve contamination, cleaning failure, and charging failure. . An electrostatic charge image developing for use in a developing device in which a charge imparting member 5 is pressed against a developer carrying member 2 containing a resin charge control agent (I) and opposed to a latent image carrying member 1. One-component toner for use. (A) 2-acrylamido-2-methylpropanesulfonic acid, (b) carboxyl group-containing polymerizable monomer, (C) styrene and / or α-methylstyrene, (D) A copolymer having a weight average molecular weight of 2,000 to 15,000, which is composed of each component of a hydroxyl group-containing polymerizable monomer. However, component (a): component (b) = 95: 5 to 7 0: 30%, component (a) and component (b): component (c) = 3:97 to 20: 80%, component (a), component (b) and component (c): component (d) = 100 parts: 0.05 to 2. 0 parts, component (a) and component (b): component (d) = 100 20 copies or less. |