Developer composition for electrophotography

Details Developer composition for electrophotography Developer composition for electrophotography

1991-12-30

1993-08-10

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

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

430109, G03G 9087

Patent

active

052347885

ABSTRACT:
A developer composition for electrophotography comprising a binding resin and a colorant, said binding resin comprising a first linear polyester having a softening point, Tsp, in the range of from 105.degree. C. to 170.degree. C. exclusive, and a second linear polyester having a softening point, Tsp, in the range of from 80.degree. C. to 105.degree. C. exclusive and lower than that of the first linear polyester by at least 10.degree. C., the weight ratio of the first linear polyester to the second linear polyester being (80:20) to (20:80) is disclosed.
The developer composition of the present invention is excellent in the hot offset resistance, low temperature fixation, smoothness of fixed face, blocking resistance and transparency.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 4863824 (1989-09-01), Uchida et al.
patent: 4940644 (1990-07-01), Matsubara et al.
patent: 5037715 (1991-08-01), Hagiwara et al.
Electrophotography: The Society Journal, vol. 22, No. 1, 1983, pp. 7-16.
Electrophotography: The Society Journal, vol. 25, No. 1, 1986, pp. 52-58.

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