Patent ID: 7422839

Claim:
A laminate, comprising a substrate, either a magnetic film provided on top of said substrate, or said magnetic film and a metallic oxidation prevention film provided thereon, and a resist layer formed from a positive resist composition on top of either said magnetic film or said magnetic film and said metallic oxidation prevention film provided thereon, wherein said positive resist composition comprises: a resin component (A′), which exhibits increased alkali solubility under action of acid, and comprises a structural unit (al) represented by a general formula (I) shown below: (wherein, R represents —H or —CH 3 ), and a structural unit (a2) represented by a general formula (II) shown below: (wherein, R represents —H or —CH 3 , and X represents an acid dissociable, dissolution inhibiting group, which is an alkyl group with a tertiary carbon atom in which said tertiary carbon atom is bonded to an ester group), a diazomethane-based acid generator (B1), and an onium salt-based acid generator (B2).