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US 7,034,235 B2Granted
Key sheet
AssigneePolymatech Co., Ltd.
InventorJunko Hosaka
Life of this patent
Estimating the term…
Abstract
A key sheet includes a base sheet and a plurality of key tops arranged on the base sheet. The base sheet includes an elastic member formed of a rubber-like elastic body and a light-reflective reinforcing member. The light-reflective reinforcing member having at least one surface constitutes the metal-containing face.
Claims17
A key sheet comprising a base sheet, and a plurality of key tops arranged on the base sheet and exposed through an operation opening which is formed in a casing of an apparatus without a partition frame,
- wherein the base sheet comprises an elastic member formed of a rubber-like elastic body and having a plurality of floating portions to which the key tops are firmly attached, and a light-reflective reinforcing member that supports the floating portions such that the floating portions are capable of depression displacement, and
- wherein at least one face of the light-reflective reinforcing member comprises a metal-containing face.
Dependencies are inferred from the claim text.