Appeal 2006-2968
Application 10/039,481
particles having a given particle conductivity, said method for producing a
liquid toner comprising:
dispersing pigmented polymer particles in an insulating non-polar
carrier liquid to form a dispersion;
mixing at least one ionomer which is not soluble at room temperature
with the dispersion to form a mixture;
coating the polymer particles with the at least one ionomer; and
adding a charge director to said mixture,
wherein said coating provides to said particles a chargeability
sufficient to give said toner particles said given particle conductivity.
33. A method for preparing a liquid toner for a particular process of
electrostatic development of electrostatic images, said particular process
requiring a given level of toner charge, the toner comprising chargeable
toner particles dispersed in a carrier liquid and at least one charge director,
the method comprising:
providing at least one charge director;
providing a toner precursor material comprising toner precursor
particles dispersed in an insulating non-polar carrier liquid, the particles
comprising a core material including a pigmented polymer suitable for use
as a toner material in the particular process for electrostatic development of
electrostatic images, but which is unchargeable by the at least one charge
director or which is weakly chargeable by the at least one charge director to
an extent that it is not useable in electrostatic development of latent images
in the particular process;
coating the toner precursor particles with at least one ionomer
component in an amount effective to impart enhanced chargeability to the
pigmented polymer to an extent that the coated particles can be used to
develop a latent electrostatic image in the particular process for electrostatic
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