Magnetic powder-dispersed type microcarrier

Abstract

Abstract PURPOSE:To prevent the generating of fog and to form a sharp image high in density and stable for a long period by incorporating a fine manetic powder and a aminotriphenylmethane type compd. represented by a specified formula in a binder resin, ad specifying an average particle diameter. CONSTITUTION:The magnetic powder-dispersed type microcarrier having an average paricle diameter of 10-50mum is prepared by incorporating into a binder resin, a fine magnetic powder and an aminotriphenylmethane type compd. represented by one of formulae I -IV in which Ar is formula VI or VII; R<13>, R<16> are each H, halogen, lower alkyl, lower alkoxy; R<14>, R<15>, R<17>, R<18> are each H or optionally substd. lower alkyl or such arykl; Y is H or OH; R<1>-R<4> are each same as R<14>; R<5>, R<6> are each same as R<13>; R<7>, R<8>, R<11>, R<12>, are each H, halogen, lower alkyl, or formula V; R<19>, R<20> are each H or lower alkyl; R<9>, <10> are each same as R<19>; and X<-> is an anion.

Inventors

• 👤 Kunio Shigeta
• 👤 邦男 重田

Bibliographic Details