Abstract: An object of the present invention is to provide a method of double color-molding a key top, which is superior in design. In order to achieve this object, according to the method of double color-molding a key top provided in the present invention, at a first shot, an outer part that forms an outer line of a closed loop in a letter, figure, mark, etc., and an inner part that forms an inner line of the closed loop, are injection-molded with light-shielding resin using light-shielding resin. At a second shot, a light-permeable resin layer is injection-molded in such a manner that it covers a gate trace formed on both the outer part and the inner part. When light-permeable resin is used for the light-permeable resin layer, the gate trace is hardly invisible when the back light is off.

Abstract: An object of the present invention is to provide a method of double color-molding a key top that is superior in design. In order to achieve this object, according to the method of double color-molding a key top provided in the present invention, at a first shot, a light-permeable resin layer is injection-molded, and simultaneously, a convex portion that corresponds to a planar shape of a closed loop in a letter, figure, sign, etc., is formed on a back surface of the light-permeable layer. In a second shot, a light-shielding resin layer is injection-molded on both an outer region and an inner region which are defined by a convex pattern of the convex portion on the back surface of the light-permeable resin layer. Since a gate trace, which remains after performing the gate-cut on the light-shielding resin layer, resides inside the key top, it is invisible from the outside of the key top. In this way, the design of a key top can be improved.

Abstract: For use with communications equipment, a handset unit that does not require a mold solely for the preparation of a window member, does not incur increased manufacturing costs, can be manufactured without requiring a special step for mounting the window member only to a handset unit cover, and has a reinforced recess for engagement with a hook. The handset unit includes a window member (22B) and a body (22A) that are integrated to form a speaker holder (22). A recess (60) for engagement with a hook is provided at the lower end of the member (22). The window member is fixed to the handset cover near the recess (60).