| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a carrier with which image quality including excellent electrostatic charge maintainability, environmental stability and image maintainability and excellent image reproducibility of low-potential latent images free from unequal densities and surface staining of images is obtainable by using plural resins incompatible with each other, dispersing conductive powder only in the one kind of the resin thereof and coating core materials with these resins, thereby forming resin layers. SOLUTION: At least two kinds of the resins incompatible with each other are used and the conductive powder is dispersed only in the one kind of the resin thereof. The core materials are then coated with these resins, by which the resin layers are formed. Both thermoplastic and thermosetting resins are usable as the coating resins to be used and are not particularly restricted, insofar as the resins are the combination of the incompatible resins. The more adequate resins among these resins include a copolymer of a nitrogen-contained vinyl monomer and styrene, etc., for the coating resins for controlling electric charge which are not dispersed with the conductive powder and the resins for dispersing the conductive powder include polyamide, melamine, etc., having high polarity. The conductive powder to be used is not particularly limited, insofar as the powder are inorg. particles exhibiting electrical conductivity.</p> |
