1. A surface treated copper foil, comprisinga copper foil, and
a roughening treatment layer on at least one surface of the copper foil,
wherein a surface of the side of the roughening treatment layer of the surface treated copper foil satisfies one or more selected from the following items (1-1) to (1-3) and
(1-1) a roughness Sq is 0.16 to 0.30 ?m,
(1-2) a roughness Ssk is ?0.6 to ?0.35,
(1-3) a roughness Sa is 0.12 to 0.23 ?m,
a glossiness of a TD of the surface of the side of the roughening treatment layer of the surface treated copper foil is 70% or less.