H - Electricity – 01 – F
Patent
H - Electricity
01
F
31/121, 40/38, 3
H01F 1/44 (2006.01) B43L 1/00 (2006.01) G09F 9/302 (2006.01) G09F 9/37 (2006.01) G02F 1/09 (2006.01)
Patent
CA 2322970
Colored magnetic particles (10, 10a) for magnetophoretic display capable of substantially preventing peeling of a pigment therefrom, to thereby prevent contamination of a dispersion medium during use of a magnetophoretic display panel (40), and a method for manufacturing the same. The colored magnetic particles (10) include magnetic particle elements (12) and a coloring layer (14) formed on each of the magnetic particle elements (12) from a first dispersion liquid using a coating apparatus (20) of a tumbling, fluidizing and granulating type, to thereby color each of the magnetic particles (12). The first dispersion liquid is constituted of a coloring pigment, synthetic resin and water. The synthetic resin is in the form of an aqueous emulsion. The colored magnetic particles (10) each include a protective layer (16) formed on the coloring layer (14). The protective layer (14) is formed from a second dispersion liquid constituted of synthetic resin dispersed in water.
Lang Michener Llp
Marktec Corporation
Takara Co. Ltd.
LandOfFree
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