Patent ID: 6613396
Filing Date: 2003-09-02
Classification: B29D,B29L,G11B

Abstract:
A method for producing an optical disc in which a recording layer and a light transmitting layer are sequentially formed on a substrate and in which light is incident from the side of the light transmitting layer to record and/or reproduce information signals, comprising the steps of:coating, at the time of forming the light transmitting layer, a UV curable resin on the portion of the substrate carrying said recording layer; and curing the UV curable resin by concurrently rotating the substrate carrying the UV curable resin coated thereon and illuminating UV rays on the UV curable resin, wherein the step of curing the UV curable resin includes: a first sub-step of running the substrate in rotation and illuminating UV rays on only the UV curable resin coated on a signal recording area of the recording layer; a second sub-step of running the substrate in rotation at an rpm larger than the rpm at which the substrate is run in rotation at said first sub-step, for removing part of the UV curable resin on an area other than said signal recording area on an outer rim portion of the substrate; and a third sub-step, subsequent to said second sub-step, of running the substrate in rotation at an rpm lower than the rpm with which the substrate is run in rotation in said second sub-step and concomitantly illuminating UV rays at least on an area other than the signal recording area for curing the UV curable resin.