Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1989-09-29
1991-08-27
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
4301066, 430110, 430126, G03G 9097
Patent
active
050432397
ABSTRACT:
A negative chargeable developer for developing electrostatic latent images, comprises a toner, and hydrophoic silica fine powder treated with an agent represented by the following compositional formula (I): ##STR1## wherein R.sub.1 denotes an alkyl or alkoxy group, R.sub.2 denotes an alkyl group having 1-3 carbon atoms, R.sub.3 denotes a long-chain alkyl group, a halogen-substituted alkyl group, phenyl group, or a phenyl group having a substituent, and m, n, m' and n' are independently 0 or a position integer satisfying the relationship of n>m, n'>m' and n+m+n'+m'<30.
REFERENCES:
patent: 4640882 (1987-02-01), Mitsuhashi et al.
patent: 4758491 (1988-07-01), Alexandrovich et al.
Canon Kabushiki Kaisha
Goodrow John
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