| 摘要 |
<p>An object of the present invention is to provide a satisfactorily operable key sheet having a structure which entirely has rigidity and shape stability but which is capable of increasing the degree of freedom in the selection of a material, thickness or the like. The key sheet according to the present invention is a key sheet having a plurality of keys, including a metal plate, and a key top portion secured to the surface of the metal plate so as to cover a large part of the metal plate, and the key top portion has a sheet-like base portion and the plurality of keys each formed in a protruding shape on the surface of this sheet-like base portion.</p> |
