Color toner, two-component type developer, image forming apparat

Details Color toner, two-component type developer, image forming apparat Color toner, two-component type developer, image forming apparat

1995-12-22

1997-07-29

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

To produce color reproduction

430109, 430111, 430106, 399228, 399284, G03G 1301, G03G 9087, G03G 1501

Patent

active

056520751

ABSTRACT:
A color toner having color toner particles containing a coloring agent and a non-linear polyester resin synthesized from a compound represented by the following general formula (1) or an acid anhydride thereof; ##STR1## wherein n is an integer of at least 3, R is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms, or an aryl group having 6 to 18 carbon atoms, the pigment particles in the color toner particles have a number average diameter of no greater than 0.7 .mu.m and contain at least 60 percent by number of the pigment particles having a diameter of 0.1 to 0.5 .mu.m and no greater than 10 percent by number of the pigment particles having a diameter of at least 0.8 .mu.m, and the color toner has a softening temperature of 85.degree. C. to 120.degree. C. calculated from a flow tester curve.

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