Electrostatic image developing toner and fixing method

Details Electrostatic image developing toner and fixing method Electrostatic image developing toner and fixing method

1991-01-18

1992-08-04

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

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

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

430904, G03G 1100

Patent

active

051358336

ABSTRACT:
A toner for developing an electrostatic image, comprises a binder resin and a colorant. Such binder resin contains a THF-insoluble matter in an amount of less than 10 wt. % based on the binder resin, and, in the molecular weight distribution measured by GPC (gel permeation chromatography) of a THF-soluble matter, has a weight average molecular weight
umber average molecular weight (Mw/Mn) of .gtoreq.18, a molecular weight peak MA in the region of a molecular weight of from 3,000 to 20,000, a molecular weight peak MB in the region of a molecular weight of from 380,000 to 1,000,000, a molecular weight minimum Md in the region of a molecular weight of from 20,000 to 380,000, provided that MB/MA is in the range of from 30 to 150, and a molecular weight distribution curve area ratio SA:SB:Sd of 1:0.3 to 0.8:0.35 to 0.8.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 4853311 (1989-08-01), Tavernier et al.
patent: 4966829 (1990-10-01), Yasuda et al.

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