Differential signal transmission cable, multiwire differential signal transmission cable, and differential signal transmission cable producing method and apparatus

A differential signal transmission cable, comprising:

• an insulated wire comprising a pair of differential signal transmission conductors coated with an insulation;
• a shield tape conductor comprising a band-like member including an electrically conductive metal layer, the shield tape conductor being wrapped along an outer circumferential surface of the insulated wire so that ends in a width direction of the shield tape conductor are overlapped together;
• a first resin tape free of metals, the first resin tape spirally wound along an outer circumferential surface of the shield tape conductor and in contact with and around an outer circumferential side of the shield tape conductor;
• and
• a second resin tape free of metals, the second resin tape being spirally wound along an outer circumferential surface of the first resin tape and around an outer circumferential side of the first resin tape,
• wherein the shield tape conductor, the first resin tape, and the second resin tape are wound in a same circumferential direction around a center axis of the insulated wire.