Radiation imagery chemistry: process – composition – or product th – Imaged product – Image contained within transparent base
Patent
1995-04-14
1997-03-25
McPherson, John A.
Radiation imagery chemistry: process, composition, or product th
Imaged product
Image contained within transparent base
430346, 430320, 430321, 430945, 264 137, 264482, 21912166, 21912185, 362 30, G03C 500
Patent
active
056143389
ABSTRACT:
A method is provided for producing a graphic for a backlit component, such as a button for an illuminated graphic display of an automobile instrument panel. The method involves a process by which molded plastic backlit buttons are manufactured without the use of hazardous chemicals or materials, and instead utilizes laser energy to produce substantially opaque regions on the button for forming a graphics image. Backlit buttons are preferably formed from a substantially transparent polymeric material in which is present pigmentation that is reactive to laser energy. A graphic image is then created on the button by selectively exposing a portion of the backlit component to laser energy. As a result, the exposed portion becomes substantially opaque while remaining portions of the backlit component remain substantially transparent. As such, the exposed and unexposed portions of the button cooperate to produce the graphic image when the button is backlit with a suitable light source.
REFERENCES:
patent: 3694945 (1972-10-01), Detiker
patent: 4729067 (1988-03-01), Ohe
patent: 5432684 (1995-07-01), Fye et al.
patent: 5477024 (1995-12-01), Share et al.
Fye Michael E.
Pyburn Robert A.
Delco Electronics Corporation
Funke Jimmy L.
McPherson John A.
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