Two-sided electrical paper

Details Two-sided electrical paper Two-sided electrical paper

1995-12-26

1998-03-03

Krynski, William

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428211, 4284111, 428457, 428464, 4285375, 4285377, 428689, 101130, B32B 300

Patent

active

057232040

ABSTRACT:
Two sided electric paper that can be written onto on both sides by having a layer of conductive material between two sheets of electric paper. The electric paper is made of small balls encased in a liquid so that they are free to rotate, and then suspended in a solid substrate. Each ball has two hemispheres, one white and one black, each hemisphere also having a different electrical quality. Thus, in an electric field, the balls can be made to rotate to create an image of black and white areas. The intermediate conductor electrically isolates each sheet of electric paper so that both sides can be written onto at the same time.

REFERENCES:
patent: 4196044 (1980-04-01), Mussoni et al.
patent: 4407697 (1983-10-01), Sadler et al.
patent: 4673607 (1987-06-01), Hata et al.
patent: 5446577 (1995-08-01), Bennett et al.

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