Process for preparation of charge-regulatory agent and liquid de

Details Process for preparation of charge-regulatory agent and liquid de Process for preparation of charge-regulatory agent and liquid de

1986-09-24

1988-01-12

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430110, G03G 912

Patent

active

047191651

ABSTRACT:
The present invention provides a process for preparation of a charge-regulatory agent characterized by reacting an amino acid with a titanium compound in an organic solvent to form a reaction mixture and further reacting the resultant reaction mixture with water which is equimolar or more to said titanium compound, and a liquid developer for development of an electrostatic image comprising a dispersion of resin-containing toner particles dispersion in a carrier solution having an electric resistance of 10.sup.9 .OMEGA..multidot.cm or more and a dielectric constant of 3.5 or less and containing said charge-regulatory agent prepared as mentioned above.
When an electrostatic latent image is developed with the present liquid developer containing the special charge-regulatory agent, an image of excellent resolving power, good half-tone reproduction and excellent gradation may be obtained without the occurence of any image flow.

REFERENCES:
patent: 2689858 (1954-09-01), Boyd
patent: 3198817 (1965-08-01), Langer
patent: 3442922 (1969-05-01), Langer
patent: 4077941 (1978-03-01), Stephen et al.
patent: 4087402 (1978-05-01), Monte et al.
patent: 4600676 (1986-07-01), Terada et al.
patent: 4614699 (1986-09-01), Kitatani et al.
Chemical Abstracts 80, 15170f (1974).
Chemical Abstracts 70, 68846h (1969).
Chemical Abstracts 70, 63666n (1969).
Chemical Abstracts 86, 25486b (1977).

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