Display device particles, process for producing the same,...

Details Display device particles, process for producing the same,... Display device particles, process for producing the same,...

2004-06-09

2009-11-10

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C345S107000

Reexamination Certificate

active

07616373

ABSTRACT:
The present invention provides display device particles that have positive or negative chargeability and have color and are produced using at least a calcium compound, in which a concentration of the calcium compound in the display device particle is 0.05% by weight or less in terms of a calcium element content, a process for producing the display device particles, as well as an image-display medium and an image-forming device each using the display device particles.

REFERENCES:
patent: 6262706 (2001-07-01), Albert et al.
patent: 6750844 (2004-06-01), Nakanishi
patent: 7161732 (2007-01-01), Kanbe
patent: 7224511 (2007-05-01), Takagi
patent: A 2001-312225 (2001-11-01), None
patent: A 2002-010771 (2002-01-01), None
Gurgrae-Jo et al. “New Toner Display Device (I): Image Display Using Conductive Toner and Charge Transport Layer.”Japan Hardcopy 1999pp. 249-252.

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