Title: Toner and image forming method
Application Number: 98120276 Application Date: 1998.08.21
Publication Number: 1218203 Publication Date: 1999.06.02
Approval Pub. Date: 2004.08.11 Granted Pub. Date: 2004.08.11
International Classifi-cation: G03G9/087
Applicant(s) Name: Canon K. K. Address:
Inventor(s) Name: Matsunaga Aki;fujiyama Kooichi;Nusa Keita
Attorney & Agent: liu jinhui
Abstract:
    An electrophotographic toner is composed of at least a binder resin, a colorant, and a wax. The binder resin (a) comprises a polyester resin, a vinyl resin and a hybrid resin component comprising a polyester unit and a vinyl polymer unit, (b) has a special quantity THF (tetrahydrofuran)-soluble content (W1) and a special quantity THF-insoluble content (W2), an special quantity ethyl acetate-soluble content (W3) and an special quantity ethyl acetate-insoluble content (W4) , a special quantity chloroform-soluble content (W5) and a chloroform-insoluble content (W6), giving a ratio W4/S6 of 1.1 - 4.0. The binder resin shows good dispersibility of wax and colorant.
Time: 9