Processes for preparing toner

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition

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430109, 264211, 2642101, 2642102, 2642103, 2642106, 523206, 523319, 523346, 523500, 524700, G03G 9087, D01F 102

Patent

active

055366139

ABSTRACT:
A process for the preparation of pigmented toner compositions comprising: a) forming at a first temperature, a first melt mixture comprised of a partially crosslinked thermoplastic resin, pigment, optionally a wax, and optional additives, wherein the partially crosslinked thermoplastic resin is comprised of a mixture of crosslinked resin macrogel particles, crosslinked resin microgel particles, and uncrosslinked resin; and b) melt mixing at a second temperature, the first melt mixture to form a second mixture, wherein the macrogel particles are partially converted into microgel particles, and wherein the second temperature is less than or equal to the first temperature.

REFERENCES:
patent: 5057392 (1991-10-01), McCabe et al.
patent: 5227460 (1993-07-01), Mahabadi et al.
patent: 5393630 (1995-02-01), Bayley et al.
patent: 5401602 (1995-03-01), Mahabadi et al.
patent: 5407772 (1995-04-01), Bayley et al.
patent: 5414052 (1995-05-01), Mahabadi et al.

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