Key top plate
AssigneeTeikoku Tsushin Kogyo Co., Ltd.
InventorsTatsuya Okamura, Kimitane Kimura, Yasuo Kojima, Atsushi Hari, Shinji Mizuno
Life of this patent
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Abstract
A first film plate 20 and a second film plate 40, each made of flexible resin film, are attached to a top surface and a bottom surface of a key top 30 made of mold-resin, respectively, so as to cover the key top 30. The first film plate 20 is pressed upward to form a recessed portion 23, the key top 30 is molded within this recessed portion 23. The second film plate 40 is arranged on the bottom surface of the key top 30. All of the first film plate 20, the key top 30, and the second film plate 40 are transparent. Decorative layers 21 and 41 are formed on the first film plate 20 and the second film plate 40, respectively.
Claims14
A key top plate comprising:
- a first flexible transparent resin film plate having an upwardly-deformed recessed portion;
- a key top made of transparent thermoplastic mold-resin within said recessed portion of said first resin film plate so that said first resin film plate is on an upper surface of said key top;
- and
- a second flexible transparent resin film plate on a lower surface of said key top;
- said key top, said first resin film plate, and said second resin film plate being shaped and arranged to define a protrusion extending outwardly from a lower circumferential portion of said key top so as to allow injection of said thermoplastic mold-resin in a molten state between said first resin film plate and said second resin film plate and into said recessed portion.
Dependencies are inferred from the claim text.