Toner for developing electrostatic image, forming apparatus and

Details Toner for developing electrostatic image, forming apparatus and Toner for developing electrostatic image, forming apparatus and

1995-03-06

1996-01-09

Royer, William J.

Photocopying

Contact printing

Light boxes

118653, 430110, 430111, G03G 1506

Patent

active

054833272

ABSTRACT:
An image forming apparatus and a process cartridge includes a toner for developing an electrostatic image that is constituted by at least a binder resin and a charge control agent. The binder resin has an acid value of 5-50. The charge control agent includes an iron complex represented by the following formula: ##STR1## wherein X.sub.1 and X.sub.2 independently denote hydrogen atom, lower alkyl group, lower alkoxy group, nitro group or halogen atom; m and m' denote an integer of 1-3; R.sub.1 and R.sub.3 independently denote hydrogen atom, C.sub.1-18 alkyl or alkenyl, sufonamide, mesyl, sulfonic acid group, carboxy ester group, hydroxy, C.sub.1-18 alkoxy, acetylamino, benzoylamino or halogen atom; n and n' denote an integer of 1-3; R.sub.2 and R.sub.4 denote hydrogen atom or nitro group; and A.sup.+ denotes hydrogen ion, sodium ion, potassium ion or ammonium ion. The toner has a weight-average particle size (D.sub.4) of 4-9 .mu.m and including toner particles having a particle size of 5 .mu.m or smaller at 3-90% by number, toner particles having a particle size of 6.35-10.08 .mu.m at 1-80% by number and toner particles having a particle size of 12.7 .mu.m or larger at a percentage by volume of at most 2.0%, wherein the toner particles having a particle size of 5.0 .mu.m or smaller are contained at N % by number and at V % by volume satisfying a relationship:

REFERENCES:
patent: 2221776 (1940-11-01), Carlson
patent: 2297691 (1942-10-01), Carlson
patent: 2618552 (1952-11-01), Wise
patent: 2874063 (1959-02-01), Greig
patent: 3666363 (1972-05-01), Tanaka et al.
patent: 3909258 (1975-09-01), Kotz
patent: 4071361 (1978-01-01), Marushima
patent: 4540268 (1985-09-01), Toyono et al.
patent: 4623606 (1986-11-01), Ciccarelli
patent: 4639119 (1987-01-01), Isaka
patent: 4990426 (1991-02-01), Diaz et al.
patent: 5169738 (1992-12-01), Tanikawa et al.
patent: 5223893 (1993-06-01), Ikemoto et al.
patent: 5250382 (1993-10-01), Shimojo et al.

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