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US 7,678,862 B2Granted
Electrophoretic particles and production process thereof
AssigneeCanon Kabushiki Kaisha
InventorMasato Minami
Life of this patent
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Abstract
Electrophoretic particles are constituted by pigment particles provided with a polymer chain connected with a polymerization initiation group at a surface of pigment particle. The resultant electrophoretic particles are excellent particle size uniformity and dispersibility.
Claims3
Electrophoretic particles comprising:
- pigment particles;
- and
- a polymer chain,
- wherein said pigment particles are made of titanium oxide or magnetite,
- wherein said polymer chain comprises a silyl group bound to a surface of the pigment particles via an oxygen atom, and said polymer chain is constituted from a basic monomer, an acidic monomer or a fluorine-containing monomer, and
- wherein said monomers are living-polymerizable by an initialization group including nitroxide or an atom transfer radical.
3 more elements
Dependencies are inferred from the claim text.