Fluorescent writing surface

Details Fluorescent writing surface Fluorescent writing surface

1987-10-27

1989-07-04

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of inorganic material

428 81, 428192, 428203, 4289122, 40542, 40615, 250324, B32B 900, G09F 1320, H01T 1904

Patent

active

048449903

ABSTRACT:
A display surface for long-lasting fluorescent markings comprises a generally planar sheet of colored fluorescent film which is electrostatically charged and placed against one (front) side of a clear plastic panel member, with an airtight seal created between the two. The back side of the clear plastic panel is similarly electrostatically charged and placed against a sheet of photoreflective film, again with an airtight seal created between the two. The reflective surface of the photoreflective film is oriented outward towards the clear plastic panel and fluorescent film. These assembled layers are then sealed around their perimeter edges to prevent introduction of air and to preserve the induced electrostatic charges. The layers can then be mounted on a mounting board or other suitably strong, rigid material to enable them to be used as a writing surface, preferably with fluorescent-type writing markers such as pens or crayons.

REFERENCES:
patent: 2650169 (1963-08-01), Goldstein
patent: 2907882 (1959-10-01), Patten
patent: 3935455 (1976-01-01), Bogaert
patent: 3969624 (1976-07-01), Van Biesen et al.
patent: 4030922 (1977-06-01), Honjo et al.
patent: 4192091 (1980-03-01), Hanes

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