Patent ID: 7442877
Filing Date: 2008-10-28
Classification: H01B

Abstract:
1. An electric wire comprising: a conductive core and a cladding which clads the core, the cladding being formed by extrusion cladding insulating synthetic resin around the core; wherein an outer surface of said cladding is colored immediately after extrusion cladding and, before the synthetic resin constituting the cladding hardens, so that the coloring agent sinks into the cladding or bonds to the outer surface of the cladding; a plurality of coloring portions color the outer surface of the cladding, each coloring portion being capable of applying a single color; the coloring portions color the outer surface of said cladding with a coloring agent, the coloring agent being a liquid coloring material dissolved or dispersed in water or other solvent; a rotatable rotor, a part of which contacts the outer surface of the cladding straightly moving, measures a moving distance of the cladding; and the coloring portions are selectively operated to color the outer surface of the cladding in intervals in relation to the position of the coloring portions so that the outer surface is composed of a first area colored in a first color, a second area colored in a second color and a boundary therebetween without overlapping each other.