COPPER FOIL WITH CARRIER, LAMINATE, METHOD OF PRODUCING PRINTED WIRING BOARD, AND METHOD OF PRODUCING ELECTRONIC DEVICES

Technical problems The present invention provides a copper foil with a carrier having a small absolute value of the difference in releasing strength between the copper foil with a carrier prepared by laminating and hot-pressing the surface close to an ultra-thin copper layer of the copper foil with a carrier to an insulating substrate and used after the carrier is peeled off and the copper foil with a carrier prepared by laminating and hot-pressing the surface close to the carrier of the copper foil with a carrier to an insulating substrate and used after the ultra-thin copper layer is peeled off, while generation of swelling during laminating of the copper foil with a carrier to the insulating substrate by hot pressing is prevented, discoloring of the surface of the ultra-thin copper layer due to oxidation is prevented, and the circuit formability is high. Solution A copper foil with a carrier, including a carrier, an intermediate layer, an ultra- thin copper layer, and a surface treated layer in this order, wherein no roughened layer is disposed on the surface of the ultra-thin copper layer, and the surface treated layer consists of Zn or a Zn alloy, the amount of Zn applied in the surface treated layer is 30 to 300 ?g/dm2, and if the surface treated layer is composed of the Zn alloy, the proportion of Zn in the Zn alloy is 51% by mass or more.