Resin layer formation method, resin layer formation device, disk and disk manufacturing method

A resin layer formation method for forming a resin layer on a surface of a substrate, with a resin layer applying apparatus having a rotatable turntable comprising the steps of:

• providing the substrate having a planar surface of the substrate;
• mounting the substrate on the rotatable turntable;
• applying a first coating of a resin on the surface of said substrate;
• forming a first resin flowable layer on the surface of said substrate by rotating said substrate on the turntable;
• forming a hardened non-flowable adjustment section only around a rotation center of said substrate by hardening only a part of said first flowable resin layer less than the entire of said first flowable resin layer;
• applying a second coating of the resin at the rotation center side from said hardened adjustment section of said substrate or on said hardened adjustment section;
• forming a second resin layer on said first resin layer by rotating said substrate;
• forming a first hardened layer by hardening all of said first resin layer and said second resin layer;
• coating resin at the rotation center side from said first hardened layer of said substrate or on said first hardened layer;
• forming a third resin layer by rotating said substrate;
• forming a second hardened layer by hardening all of said third resin layer;
• and
• repeating the steps of forming said third resin layer and said second hardened layer a plurality of times.