Patent · US Expired

Dry toner, and process cartridge, image forming process and apparatus using the same

US7056636B2 · kind B2 · utility

27Cited by
6References
25Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 14, 2003
Grant dateJun 6, 2006
Priority date
Expiry dateMay 17, 2024

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G9/09708
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A dry toner contains at least a toner binder, organic fine particles, a colorant, a wax, a charge control agent, and an external additive. The wax is concentrated in the vicinity of a toner core including the toner binder, colorant and wax. The organic fine particles adhere to the surface of the toner core to form a base toner-particle, the fine particle of charge control agent adhere to the surface of the base toner-particle, and the external additive is located on the surface thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.