Fluorinated polymer coated carrier particles

Details Fluorinated polymer coated carrier particles Fluorinated polymer coated carrier particles

1976-12-14

1979-04-03

Martin, Jr., Roland E.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

252 621P, 427213, 427215, 427216, 427221, G03G 902, G03G 1308

Patent

active

041478347

ABSTRACT:
A carrier bead is disclosed having a core and at least an outer coating of polytetrafluoroethylene or fluorinated ethylene propylene. Use of these fluoropolymers as carrier coatings results in extremely long carrier life and overcomes problems that have heretofore plagued the commercialization of a magnetic brush development system for a plain paper electrostatic copying apparatus.

REFERENCES:
patent: 3798167 (1974-03-01), Kukla et al.
patent: 3873356 (1975-03-01), Queener
patent: 3900587 (1975-08-01), Lenhard
patent: 3947271 (1976-03-01), Munzel et al.
Dupont - Teflon Finishes Bulletin #1, Eleventh Ed.

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