Phase change electophoretic imaging for rewritable applications

Details Phase change electophoretic imaging for rewritable applications Phase change electophoretic imaging for rewritable applications

2007-01-17

2008-10-07

Choi, William C (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C345S105000, C345S107000

Reexamination Certificate

active

07433114

ABSTRACT:
The present invention relates to a microcapsule that can be used to form a rewritable medium for visual displays that are stable in the presence of electric fields having a strength that is typical in the work environment. The microcapsule of the invention comprises charged particles of one or more colors that are suspended in a phase change material that has a melting temperature in the range of between about 30° C. and about 200° C. The microcapsules can be used to form an electrophoretic coating that includes microcapsules of the invention distributed throughout a polymer matrix. The electrophoretic coating can be used to coat a substrate to form a rewritable medium.

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