| 摘要 |
PURPOSE:To improve a cleaning characteristic by incorporating fine particles which are coated on at least a part of the surface with a polymer consisting of 1 or >=2 kinds of vinyl monomers into a core material. CONSTITUTION:The fine particles which are coated at least on a part of the surface with the polymer consisting of 1 or >=2 kinds of the vinyl monomers are incorporated into the core material. Such resins with which the core material of a capsule toner is provided with the hardness equiv. to <=5.0, more preferably <=3.0 Vickers hardness (HV) are used for the resin to constitute the core material. Waxes and higher fatty acids are usable as such resins. A homopolymer of the vinyl monomer (refers to the monomers having one carbon-carbon double bond and is used in the sense of including a vinylidene monomer) or a copolymer of >=2 kinds of the monomers. The cleaning characteristic is thereby improved and the generation of filming and cleaning defects is prevented. |
