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Toner particles of controlled shape and method of preparation

  • US 5,968,702 A
  • Filed: 11/24/1997
  • Issued: 10/19/1999
  • Est. Priority Date: 11/24/1997
  • Status: Expired due to Term
First Claim
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1. A method for the preparation of electrostatographic toner comprising the steps of:

  • a) dissolving in ethyl acetate a hyperdispersant selected from SOLSPERSE®

    24000 and SOLSPERSE®

    20000, thereby forming a solution;

    b) mixing the solution with a polymer material to form an organic phase;

    c) dispersing the organic phase in an aqueous phase comprising a particulate stabilizer and homogenizing the resultant dispersion;

    d) evaporating the solvent; and

    e) washing and drying the resultant product.

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