Compositions – Electrolytes for electrical devices
Patent
1973-05-10
1976-09-14
Engle, Samuel W.
Compositions
Electrolytes for electrical devices
G03G 900
Patent
active
039805751
ABSTRACT:
A toner material for use in the development of electrostatic charge patterns is described which comprises carbon black as coloring material, polystyrene as thermoplastic resin binder and at least one diester of orthophthalic or metaphthalic acid that is solid at room temperature as plasticizer, wherein the polystyrene binder has a molecular weight comprised between about 30,000 and about 70,000, the proportion by weight of the carbon black to the binder is comprised between about 5:100 and about 20:100, and the proportion by weight of the said plasticizer(s) to the binder is comprised between about 2:100 and about 15:100. The toner material is of a very simple and inexpensive composition and nevertheless has optimum photographic and physical properties.
REFERENCES:
patent: 3672928 (1972-06-01), Madrid et al.
patent: 3681107 (1972-08-01), Moriconi et al.
patent: 3723114 (1973-03-01), Hagenbach et al.
De Roo Pierre Richard
Van der Auweraer Gaston Eduard
Van Engeland Jozef Leonard
Afga-Gevaert N.V.
Breiner A. W.
Engle Samuel W.
Nelson Peter A.
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