Music – Instruments – General features
Patent
1999-06-28
2000-10-17
Nappi, Robert E.
Music
Instruments
General features
84477R, 84478, G10C 312
Patent
active
061335185
ABSTRACT:
A keyboard, having a plurality of keys arranged so as to be pivotable upward and downward and a plurality of light emitters arranged under the keys in one-to-one correspondence therewith, selectively causes the light emitters to emit light, thereby teaching keys to be depressed. A base resin, which forms each of the plurality of keys, has transparency and contains a pigment which colors the base resin and a light scattering agent having a light diffusion property. By virtue of the use of the pigment and the light scattering agent, a surface color which confers a refined feature on the keys can be realized, and accordingly a product with an excellent appearance can be attained. Moreover, by virtue of the blending of the pigment and the light scattering agent, the keys can shine uniformly without a difference in brightness when their corresponding light emitters are lighted, and a keyboard instrument player can fully recognize by his/her eyes that the keys shine.
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Kamimura Norizo
Tomita Iwao
Casio Computer Co. Ltd.
Lockett Kimberly
Nappi Robert E.
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