Reversible image display medium

Details Reversible image display medium Reversible image display medium

2005-05-31

2005-05-31

Tran, Henry N. (Department: 2674)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S055000, C345S204000, C347S112000, C347S153000, C359S296000, C359S302000, C399S158000, C399S131000, C430S019000, C430S032000, C430S037000

Reexamination Certificate

active

06900789

ABSTRACT:
Disclosed is a reversible image display medium which can be repeatedly used and can display high quality images, in which cells between the two substrates accommodate a dry developer containing at least two kinds of frictionally chargeable dry developing particles having different chargeable polarities and different optical reflection densities; images are displayed by forming an electrostatic latent image corresponding to the image to be formed on one of the two substrates to drive the developing particles in an electrostatic field based on the electrostatic latent image; a developer-facing surface of one of the substrates has a surface resistivity of at least 1×1012ohm/square; a developer-facing surface of the opposite substrate has a surface resistivity from 1×106ohm/square to 1×1012ohm/square; a developer-facing surface of one of the substrates has a surface average median roughness Ra of 0.2 μm to 0.5 μm; and an external surface of the substrate on image observation side has a surface average median roughness Ra of 0.2 μm to 0.7 μm.

REFERENCES:
patent: 4126854 (1978-11-01), Sheridon
patent: 4143103 (1979-03-01), Sheridon
patent: 5982346 (1999-11-01), Sheridon et al.
patent: 6045955 (2000-04-01), Vincent
patent: 6184856 (2001-02-01), Gordon et al.
patent: 6285382 (2001-09-01), Wakahara et al.
patent: 6352776 (2002-03-01), Hayashi et al.
patent: 6407763 (2002-06-01), Yamaguchi et al.
patent: 6411316 (2002-06-01), Shigehiro et al.
patent: 6472048 (2002-10-01), Kakihara
patent: 6636186 (2003-10-01), Yamaguchi et al.
Gugrae-Jo, et al, “New Toner Display Device: Image Display Using Conductive Toner And Charge Transport Layer” Japan Hardcopy '99, The Annual Conference Of The Imaging Society Of Japan, Jul. 21-23, 1999, pp. 249-252.

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