| 摘要 |
PURPOSE:To form a clear and stabilized image and to obtain a liquid developer having good shelf stability, by dispersing a resin contg. a coloring agent and a specific beta-methacryl-oxyethyl acid monomer as a composing unit in a carrier liquid. CONSTITUTION:A coloring agent and a copolymer resin contg. a monomer A expressed by a formulaI(R denotes H, CH3; n,m denote 1-3) and or a monomer B expressed by a formula II (X denotes a group expressed by formulas III, IV) as a composing unit are added and dispersed in a carrier liquid. As said copolymeric resin, such resin is used as those in which a monomer D having a glycidyl group is graft-copolymerized to a copolymer of preferably the monomer A and/or the monomer B with the monomer C expressed by the formula V[X, represents a group VI (1<=p<=20)]. beta-Methacryloxyethyl succinate etc. are used as a monomer A to be used for this purpose, and beta-methacryloxyethyl phthalate etc. are used as a monomer B. |
