Toner producing method using recycled extra-fine toner particles
Patent 5846683 Issued on December 8, 1998. Estimated Expiration Date: 
March 13, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 13, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod for producing toner for developing electrostatic images Process for producing L-ascorbic acid Patent #: 5637734 Inventors
ApplicationNo. 816391 filed on 03/13/1997US Classes:430/137.21By dry blending developer componentsExaminersPrimary: Goodrow, JohnAttorney, Agent or FirmForeign Patent References
International ClassG03G 009/087Foreign Application Priority Data1996-04-08 JPAbstractThe extra-fine toner arising in the toner producing process, is returned to the mixing step where it is mixed again with the binder resin and the coloring agent, and the compound is sent out to the kneading step. In this procedure, the particle size of the binder resin is set in accordance with the particle size and blending amount of the extra-fine toner, the kind of the binder resin, etc. By using the binder resin having the thus determined particle size, the amount of the binder to be fed into the mixer or the amount of the compound ejected from the mixer are maintained uniform. Further, when the extra-fine toner is mixed with the starting materials, the blending ratio of the extra-fine toner to the starting material is set between 5 wt. % and 10 wt. %, and the blending ratios of the charge control agent and the coloring agent are set equal to those of the normal process where no recycled toner is added. |
| ||||||||||||||
