Feedback control system for polymer modification of toner resins

Measuring and testing – Instrument mechanism or transmission – Rate of change

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430137, B29C 4776

Patent

active

057509093

ABSTRACT:
An apparatus for the preparation of a mixture of toner resin and initiator, to form a toner resin or toner mixture including cross-linked microgel particles is provided. The apparatus includes a toner extruder having the resin being conveyed therethrough and an adder for adding the initiator to the toner resin in the toner extruder to form the toner resin or mixture. The apparatus also includes a measurer for measuring the cross-linked microgel particles in the toner mixture substantially immediately after mixing in the toner extruder and transmitting a signal indicative of the quantity of cross-linked microgel particles in the toner resin or mixture. The apparatus also includes a controller for controlling the addition rate of initiator in response to the signals from the measurer.

REFERENCES:
patent: 4973439 (1990-11-01), Chang et al.
patent: 5223562 (1993-06-01), Sagawa et al.
patent: 5227460 (1993-07-01), Mahabadi et al.
Horalek et al.; "Measuring apparatus for automated monitoring of the curing process using near-infrared spectroscopy"; International Polymer Science and Technology; vol. 19, No. 12, 1992.

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