Toner, process for producing the same, two-component...

Details Toner, process for producing the same, two-component... Toner, process for producing the same, two-component...

2004-01-16

2008-08-19

Chapman, Mark A (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

C430S108400, C430S108800, C430S110200, C430S123500, C430S123520

Reexamination Certificate

active

07413841

ABSTRACT:
Toner includes aggregated particles including at least resin particles, pigment particles, and wax particles. A fused film of the resin is formed on the surface of the toner. The wax is at least one selected from A: ester wax that has an iodine value of not more than 25, a saponification value of 30 to 300, and an endothermic peak temperature (melting point) of 50° C. to 100° C. based on a DSC method; and B: wax that is obtained by a reaction of alkyl alcohol having a carbon number of 4 to 30, unsaturated polycarboxylic acid or its anhydride, and unsaturated hydrocarbon wax and has an acid value of 1 to 80 mgKOH/g and an endothermic peak temperature (melted point) of 50° C. to 120° C. based on the DSC method. The toner and a two-component developer can achieve oilless fixing that prevents offset without using oil while maintaining high OHP transmittance, can eliminate spent of the toner components on a carrier to make the life longer, and can ensure high transfer efficiency by suppressing transfer voids or scattering during transfer.

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PTO-892 for co-pending U.S. Appl. No. 10/533,231.

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