Optical film, polarizing plate, image display, and manufacturing method of optical film

A method for manufacturing an optical film comprising a support;

• a hard coat layer formed by hardening a hard coat layer-coating composition;
• and a overcoat layer formed by hardening an overcoat layer-coating composition, in this order, the method comprising:
• coating simultaneously a hard coat layer coating composition comprising a compound having a plurality of polymerizable functional groups in one molecule;
• and
• an overcoat-layer coating composition comprising a compound having at least three polymerizable functional groups in one molecule,
• wherein each of the hard coat layer-coating composition and the overcoat layer-coating composition comprises a compound having a plurality of polymerizable functional groups in one molecule,
• wherein the compound in the overcoat layer-coating composition comprises a compound having at least three polymerizable functional groups,
• wherein a ratio MOC/MHC is from 1.1 to 6.0, wherein MOC is a weight average molecular weight of the compound having the plurality of polymerizable functional groups in one molecule in the overcoat layer-coating composition, and MHC is a weight average molecular weight of the compound having the plurality of polymerizable functional groups in one molecule in the hard coat layer-coating composition,
• wherein the over coat layer has a thickness of 0.15 to 10 μm, and
• wherein the overcoat layer-coating composition comprises at least one of a reactive silicone compound and a reactive fluorine compound.