Light guiding plate manufacturing apparatus and light guiding plate manufacturing method
AssigneeColumbia Digital Media, Inc.
InventorsKazuo Kobayashi, Kazuhiko Nakano, Kunisato Kafuku, Hidetaka Kaburagi
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Abstract
A light guiding plate is manufactured with accuracy and at low cost. This invention comprises 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 for reciprocating along a lower portion of the cylindrical roller in accordance with rotation of the cylindrical roller as fixing a resin substrate, and pressing means for pressing the stamper, which is fixed to the cylindrical roller, onto a surface of the resin substrate, which is fixed to the substrate fixing means, with a constant pressure.
Claims2
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.
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
- preheating means, wherein when a temperature of deflection under load of the resin substrate fixed by said substrate fixing means is set to T, said preheating means heats, before said stamper is pressed by said cylindrical roller, a vicinity of the surface of said resin substrate to temperature in the range of(T+20)° C.
Dependencies are inferred from the claim text.