| 摘要 |
PROBLEM TO BE SOLVED: To provide an entrained air bubble detecting method and an detecting apparatus for accurately detecting the existence of the air bubbles, even if the air bubbles entrained into a photo-curing resin layer are minute or their existing location overlap with unevenness of an original plate, and a duplicating method of a photocuring resin duplicate plate implemented after the existence of the air bubbles is previously confirmed and detected by the entrained air bubble detecting method. SOLUTION: When the photocuring resin duplicate plate is duplicated by curing the photocuring resin layer by irradiating the photocuring resin layer with a photocuring beam from a transparent substrate, while an uneven face of the duplicated original plate provided with the minute unevenness on one surface closely contacts a surface of the photocuring resin layer on the transparent substrate, a detection beam is scanned and irradiated to a periphery of the photocuring resin layer before photocuring from the transparent substrate, a reflection light is reflected by an interface between the photocuring resin layer and the air bubbles existing in the photocuring resin layer, returns to the outside of the transparent substrate and is sequentially recorded, and the presence of the air bubbles is detected, based on the recorded information. COPYRIGHT: (C)2005,JPO&NCIPI
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