MANUFACTURE OF UNIFIED KEY SHEET TYPE OPERATION BUTTON AND UNIFIED KEY SHEET TYPE OPERATION BUTTON MANUFACTURED THEREBY

摘要

PURPOSE: To prevent misalignment of keys and an occurrence of a crack fault while handling, in the case of an unified key sheet type operation button used for a remote control apparatus, etc., of a push button type telephone or an audio visual instrument such as a television set, etc. ;CONSTITUTION: An elastomer key 2 formed to have a flange part 5 around its backside and a concave part 6 on its inner side and formed to be light- transmissive at least at a surface part 7 between a surface 4 and the concave part 6 is placed in the cavity of an elastomer mold 13 in the condition that its back side is faced to the inside of the cavity, and thereafter a light- transmissive elastomer sheet 3 is press-formed in one body with the elastomer key. Then, the surface of the key is decoration-finished to be light transmissive at indication parts 19 such as numbers, etc., or remaining non-indication parts 20.;COPYRIGHT: (C)1993,JPO&Japio