Phase change electrophoretic imaging for rewritable...

Details Phase change electrophoretic imaging for rewritable... Phase change electrophoretic imaging for rewritable...

2007-02-27

2007-02-27

Mack, Ricky (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C345S105000, C345S107000

Reexamination Certificate

active

11232811

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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