Toner compositions with metal complex charge enhancing additives
June 5, 2012. 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 ReferencesNegatively charged toner for developing electrostatic images containing metal complex of salicyclic acid compound as charge control agent Toners containing alkyl pyridinium compounds and their hydrates Ortho-halo phenyl carboxylic acid charge enhancing additives Toner for developing electrostatic latent images and complex compounds containing aluminum usable therein Electrostatic image developing toner comprising complex compounds containing silicon Patent #: 5188929 InventorsAssigneeApplicationNo. 894688 filed on 06/05/1992US Classes:430/108.24, Heavy metal, aluminum, or silicon in the nitrogen or phosphorus compound430/108.3Organic heavy metal, aluminum, or silicon compound adjuvantExaminersPrimary: Martin, RolandAttorney, Agent or FirmForeign Patent References
International ClassesG03G 009/09G03G 009/097 AbstractA negatively charged toner composition comprised of a polymer or polymer resins, a colorant or colorants, optional surface additives, and a metal complex charge enhancing additive obtained from the reaction of a hydroxybenzoic acid and a base with a mixture of a metal ion and a hydroxyphenol. |
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