Compositions – Electrolytes for electrical devices
Patent
1976-09-14
1979-02-06
Smith, John D.
Compositions
Electrolytes for electrical devices
96 1LY, 260429K, 2604299, 260435R, 2604381, 260504A, 260513R, 252353, G03G 912
Patent
active
041383516
ABSTRACT:
A liquid toner developer composition suitable for use in developing electrostatic charge patterns, characterized in that the developer contains a metal alkyl sulphonate ionic surfactant in which the metal ion is a bivalent metal ion selected from the group consisting of zinc(II), lead(II), cadmium(II) and copper(II) and the sulphonate group thereof is present directly on an alkyl chain containing at least 6 carbon atoms in a straight chain, which sulphonate has a positive charging effect on the toner, and the sizes of the toner particles and the amount in which said sulphonate is present are selected such that the toner can develop a charge pattern having a charge level corresponding to 50 V for a capacitance of 1.5.times.10.sup.-11 F.cm.sup.-2 up to an optical density of at least 0.8.
REFERENCES:
patent: 3337615 (1967-08-01), Roberts
patent: 3417019 (1968-12-01), Beyer
patent: 3463809 (1969-08-01), Crocker et al.
patent: 3681243 (1972-08-01), Okuno et al.
patent: 3793032 (1974-02-01), Pollet et al.
patent: 3897470 (1975-07-01), Sias
patent: 3917722 (1975-11-01), Yates
Morrison et al., "Organic Chemistry", Allyn & Bacon Inc., pp. 62, 63, 72, 73 c. 1959.
de Jaeger Nikolaas C.
De Volder Noel J.
Gilliams Yvan K.
Pollet Robert J.
Sels Francis J.
AGFA-GEVAERT N.V.
Daniel William J.
Smith John D.
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