Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Patent
1997-05-14
1999-01-12
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
361226, G03G 2100
Patent
active
058586008
ABSTRACT:
A toner and a carrier are so combined together as to substantially satisfy the following formula (1), ##EQU1## wherein Qmax is a maximum amount of electric charge (.mu.C/g) of the toner, V.sub.T/C is a contact potential difference (V) of the toner to the carrier, .tau.r is a relaxation time constant (sec) of the toner, .tau.g is a charging time constant (sec) of the toner, and k is a coefficient (F) determined depending upon the kinds of the toner and the carrier. This method makes it possible to so combine the toner and the carrier together that the amount of electric charge of the two-component developing agent becomes a maximum based on the contact potential difference (V.sub.T/C) of the toner to the carrier.
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Itakura Takayuki
Masuda Hiroaki
Martin Roland
Mita Industrial Co. Ltd.
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