Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1990-10-19
1992-12-01
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
G03G 910
Patent
active
051680270
ABSTRACT:
Disclosed is a carrier of a developer, which is characterized in that the current value observed when a direct current is applied under a voltage of 200 V is 0.8 to 2.0 .mu.A and the relaxation time is in the range of from 4.0 to 6.0 milliseconds, that is, the characteristic values in the dynamic state, for example, in a developing apparatus, are kept with certain ranges. If this developer carrier is used, an image having a high quality can be obtained without occurrence of troubles often caused in conventional developers, such as carrier dragging (transfer of the carrier to a photosensitive material together with the toner), fogging (transfer of the toner to the background of a copying sheet) and letter thinning.
REFERENCES:
patent: 4430410 (1984-02-01), Aizawa et al.
patent: 4971880 (1990-11-01), Hotomi et al.
patent: 5015550 (1991-05-01), Creatura et al.
Fukumoto Takatomo
Taguchi Kyouya
Teshima Takashi
Yamamura Kazuhiko
Goodrow John
Mita Industrial Co. Ltd.
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