Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1997-07-14
1999-02-02
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430122, G03G 9107
Patent
active
058662898
ABSTRACT:
A developer for electrostatic development, which is a mechanical mixture of a magnetic toner containing a binder resin and a magnetic powder as the essential component and a magnetic carrier having a specific volume resistance of 10.sup.9 .OMEGA..cndot. cm or more. The properties of the magnetic toner and the magnetic carrier are correlated to each other so that an average particle size of the magnetic carrier is 0.5 to 6 times an average particle size of the magnetic toner, a magnetization of the magnetic carrier is 0.5 to 4 times a magnetization of the magnetic toner, and a triboelectric charge w of the magnetic carrier (Qc) and a triboelectric charge of the magnetic toner (Qt) satisfy an equation: .vertline.Qt-Qc.vertline.=5 to 50 .mu.C/g.
REFERENCES:
patent: 5573880 (1996-11-01), Mayama et al.
patent: 5618647 (1997-04-01), Kukimoto et al.
patent: 5731121 (1998-03-01), Asanae
Asanae Masumi
Ochiai Masahisa
Goodrow John
Hitachi Metals Ltd.
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