Patent ID: 7094290

Claim:
A light guiding plate manufacturing apparatus, which manufactures a light guiding plate, comprising: a cylindrical roller, which has a heater built-in, rotating while fixing a stamper having a dot pattern formed on its surface; substrate fixing means which reciprocates at a lower side of said cylindrical roller in accordance with rotation of said cylindrical roller while fixing a resin substrate; pressing means for pressing with a constant pressure said stamper, which is fixed to said cylindrical roller, onto a surface of said resin substrate, which is fixed to said substrate fixing means; and heating means for heating in advance said resin substrate fixed to said substrate fixing means, wherein when a temperature of deflection under load of the resin substrate fixed by said substrate fixing means is set to T, said heating means heats said resin substrate to temperature in the range of (T+20)° C. and said stamper, fixed to said cylindrical roller, to temperature in the range of from no less than (T+10)° C. to no greater than (T+30)° C.