Toner with wax component for developing electrostatic image

Details Toner with wax component for developing electrostatic image Toner with wax component for developing electrostatic image

1996-04-03

1997-02-25

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

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

430111, G03G 9097

Patent

active

056057784

ABSTRACT:
A toner for developing electrostatic images is prepared from a binder resin, a colorant or magnetic material, and a wax component. The toner is provided with improved low-temperature fixability anti-electrostatic offset characteristic, anti-blocking characteristic and anti-offset characteristic by controlling the thermal characteristic of the wax component so as to provide a DSC (differential scanning colorimeter) curve on temperature increase, showing a minimum onset temperature of heat absorption of at least 50.degree. C. and at least two heat absorption peaks including a largest and a second largest peaks, different from each other in peak temperature by at least 15.degree. C., wherein low-temperature heat absorption peak P.sub.1 of the two peaks shows a half-value width of at most 20.degree. C. and a higher-temperature heat absorption peak P.sub.2 shows a half-value width of at most 20.degree. C., and wherein the peak P.sub.1 shows a higher half-width temperature and the peak P.sub.2 shows a lower half-width temperature different form the higher half-width temperature of the peak P.sub.1 by at least 5.degree. C.

REFERENCES:
patent: 4917982 (1990-04-01), Tomono et al.
patent: 5225303 (1993-07-01), Tomita et al.
patent: 5364722 (1994-11-01), Tanikawa et al.
patent: 5384224 (1995-01-01), Tanikawa et al.

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