Magnetic display system

Details Magnetic display system Magnetic display system

1989-12-27

1991-10-15

Thomas, Alexander S.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having a component wherein a constituent is liquid...

428900, 434409, 446131, 273239, B43L 112

Patent

active

050573632

ABSTRACT:
A magnetic display system which comprises a display having a non-magnetic substrate and a microcapsule coating layer provided on the substrate, with sealed magnetic particles having an excellently light-absorptive surface characteristic and also sealed non-magnetic particles having an excellent light-reflective characteristic. Both the magnetic and non-magnetic particles are dispersed or dissolved in an oily liquid in the microcapsules. A magnetic device for reversing the position of the light-absorptive magnetic particles and light-reflective non-magnetic particles in the microcapsules is provided. The magnetic device causes a local shift by attraction of the light-absorptive magnetic particles in the microcapsule coating layer of the display to the front side thereof to thereby invert the position of the light-reflective non-magnetic particles in the corresponding areas, thereby forming characters or images.

REFERENCES:
patent: 4232084 (1980-11-01), Tate
patent: 4536428 (1985-08-01), Murata et al.

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