Patent attributes
An object is to provide an injection molding machine and an injection molding method which can shorten the molding cycle without deteriorating accuracy in transfer of a pattern of an information surface of a stamper and without deteriorating optical characteristics. The injection molding machine includes mold closing processing means for performing mold closing; movable-platen-position determination means for determining whether or not a movable platen (23) has reached an injection start position (Sb) set between a mold opening limit position and a mold closing limit position; and injection processing means for starting an injection step when the movable platen (23) reaches the injection start position (Sb) . In this case, since the injection step is started before the movable platen reaches the mold closing limit position, the molding cycle can be shortened by an amount corresponding to a time by which the start of the injection step is advanced.
