Resist film forming apparatus, resist film forming method, and mold original plate production method

The invention provides a resist film forming apparatus, a resist film forming method, and a mold original plate production method. The resist film forming apparatus includes a coating unit configured to drop, rotate, and spread a resist while rotating a substrate, a heating unit configured to heat a specimen in which the resist is coated on the substrate, a metering unit configured to measure a weight of the specimen being heated, and a control unit configured to control lamination of a plurality of resist layers on the specimen by executing a process of forming a resist layer on the substrate by performing heating in the heating unit until a predetermined amount of solvent has evaporated from a resist coated on the specimen based on the measured weight of the specimen, and repeating for a predetermined number of times a process of forming a new resist layer on a resist layer formed on the specimen by similarly controlling the coating unit and the heating unit.