Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1998-02-17
1999-11-09
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430137, G03G 9093
Patent
active
059811293
ABSTRACT:
An electrophotographic toner is made up of toner particles composed of irregularly-shaped core particles made chiefly of binder resin, and surface-modifying fine particles which are first dispersed over and attached to the surface of the core particles, and then affixed or formed into a film thereon. The BET specific surface area, based on N.sub.2 adsorption, of the toner particles is less than 0.64 times the BET specific surface area of the core particles and surface-modifying fine particles combined together. Further, this value is 1.07 times the BET specific surface area of hypothetical toner particles which are perfect spheres. Consequently, the toner is not prone to problems such as filming, toner scattering, and fogging which are caused by peeling, separation, etc. of the surface-modifying fine particles, nor to poor cleaning due to spherical toner particles. Further, since the toner is manufactured with a quantitative grasp of the state of modification of the surface of the core particles by the surface-modifying fine particles, it is a toner in a stable state.
REFERENCES:
patent: 3967962 (1976-07-01), O'Malley
patent: 4345013 (1982-08-01), Diamond et al.
patent: 4528257 (1985-07-01), Polderman et al.
patent: 4980257 (1990-12-01), Anno et al.
patent: 5206109 (1993-04-01), Anno
patent: 5219697 (1993-06-01), Mori et al.
patent: 5350657 (1994-09-01), Anno et al.
patent: 5849456 (1998-12-01), Matsumura
Akazawa Yoshiaki
Imafuku Tatuo
Ishida Toshihisa
Morinishi Yasuharu
Murakami Toshihiko
Conlin David G.
Goodrow John
Neuner George W.
Sharp Kabushiki Kaisha
LandOfFree
Electrophotographic toner and method of manufacturing same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrophotographic toner and method of manufacturing same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrophotographic toner and method of manufacturing same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1453540