Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1980-01-10
1981-09-01
Downey, Mary F.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430110, 430111, 252 6254, G03G 900, C04B 3504
Patent
active
042872820
ABSTRACT:
Disclosed is a composite magnetic developer which consists essentially of a homogeneous intimate mixture comprising a plurality of electrically insulating magnetic particulate developers comprising a binder medium and a finely divided magnetic material dispersed in the binder medium, in which the difference of the dielectric constant between the developers is in the range of from 0.2 to 0.85.
This composite magnetic developer can provide a clear transferred image having a high density on a transfer sheet such as plain paper, and even if the copying operation is conducted continuously for a long time by using this developer, excellent transferred images can be obtained without substantial change of the composition of the composite developer or substantial reduction of the image density.
REFERENCES:
patent: 3349703 (1967-10-01), Varron et al.
Miyakawa Nobuhiro
Teshima Takashi
Downey Mary F.
Mita Industrial Company Limited
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