Super-thin plastic key

Details Super-thin plastic key Super-thin plastic key

1997-08-26

1998-09-15

Burr, Edgar S.

Typewriting machines

Key-board or key lever-actuating mechanism

Key-cap or key-stem structure

400490, 200314, 200317, 200512, 200311, B41J 512, H01H 918

Patent

active

058070028

ABSTRACT:
The subject invention relates to a type of super-thin plastic key, comprising a top part and a base part; said top part comprising a top part foundation, a layer of light permeable ink and a layer of light-proof ink; using a plastic film as the top part foundation; on said top part foundation is printed a layer of light permeable ink; on said light permeable ink is printed a layer of light-proof ink to display a letter or figure; said top part foundation printed with the light permeable ink and the light-proof ink is subjected to hot-press process to form a top part with a specified shape; said top part and the base part are again subjected to an extrusion monobloc forming process, to form a light permeable super-thin plastic key; by said configuration to achieve the requirements of light weight, thin, short, and small size for electronic telecommunication products; thus avoiding the weakness of poor adhesion and achieving the purposes of simple production and reduced costs.

REFERENCES:
patent: 5036440 (1991-07-01), Takii et al.
patent: 5401133 (1995-03-01), Moriike et al.
patent: 5477430 (1995-12-01), LaRose

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