▎ 摘　　要

NOVELTY - A rolled copper foil has a board width of 550-680 mm and a sag dimension of 7 mm or less, which is the ratio of largest height with respect to minimum height of rolled copper foil along width direction. USE - Rolled copper foil is used in manufacture of graphene (claimed) for forming graphene sheet. Uses include but are not limited to separator for fuel cell, transparent electrode, mercury-free fluorescent lamp, composite material, conductive thin film for display element, and carrier for drug delivery system. ADVANTAGE - The rolled copper foil enables manufacture of graphene with large area, by economical process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of graphene, which involves rewinding rolled copper foil, arranging the rolled copper foil in the interior of predetermined chamber, supplying carbon-containing gas, forming graphene in the surface of copper foil, etching the copper foil, laminating a transfer sheet on the surface of graphene, and transferring the graphene on the transfer sheet.