Title:
ELECTROPHOTOGRAPHIC MAGNETIC CARRIER AND MANUFACTURE THEREOF
Document Type and Number:
Japanese Patent JPH05197211
Kind Code:
A
Abstract:
PURPOSE: To provide an electrophotographic magnetic carrier which imparts a long life as a developer and hardly damages a photosensitive body, because it has a composite crosslinking structure consisting of a urethane linkage and a urea linkage and the particle has a curved surface form.
CONSTITUTION: In the electrophotographic magnetic carrier in which a ferromagnetic particle is dispersed into a resin, the carrier particle has a curved surface form with 10-300μ average particle size, and the electrophotographic magnetic carrier consists of the ferromagnetic particle being characterized by having the composite crosslinking structure being crosslinked with the urethane linkage and the urea linkage, and a polyurethane polyurea.
Inventors:
MATSUKURI KINJI
HOSODA ATSUSHI
MURAMATSU ICHIRO
KASE MITSUO
KONNO EIJU
HOSODA ATSUSHI
MURAMATSU ICHIRO
KASE MITSUO
KONNO EIJU
Application Number:
JP25976092A
Publication Date:
August 06, 1993
Filing Date:
September 29, 1992
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS
International Classes:
G03G9/107; (IPC1-7): G03G9/107
Attorney, Agent or Firm:
Takahashi victory