Loading patent…
AssigneeCanon Kabushiki Kaisha
InventorsKoji Inaba, Hiroaki Kawakami, Tatsuya Nakamura, Shinya Yachi, Yuji Moriki, Satoshi Handa, Katsuyuki Nonaka, Yoshihiro Nakagawa
Estimating the term…
A toner having a good chargeability stable against an environmental change is formed of toner particles each comprising at least a binder resin, a colorant, a release agent and a sulfur-containing polymer, and an external additive. The toner particles contain 100 to 30,000 ppm by weight thereof of at least one stabilizer element selected from the group consisting of magnesium, calcium, barium, zinc, aluminum and phosphorus. The toner particles may preferably be produced by suspension polymerization of a monomer composition containing the sulfur-containing polymer in an aqueous medium containing a dispersion stabilizer having the stabilizer element.
A toner comprising:
A process for producing a toner, comprising:
Dependencies are inferred from the claim text.