PURPOSE: To improve the quality and yield of a stamper for production of optical recording media by executing electrocasting by using a conducting member which is formed as a curved surface in the end part in contact with a conductive film.
CONSTITUTION: This electrocasting device for the master disk for production of the stamper for forming metallic films by executing electrocasting on the conductive film 54 formed on the master disk 1 having the rugged patterns corresponding to the preformat of the optical recording medium has the conducting member 4 for energizing the conductive film 54. This conducting member 4 is formed as the curved surface gradually approaching the conductive film 54 near the end part where the conducting member 4 and the conductive film 54 come into contact. As a result, the film break of the electrocasting film in the electrocasting state for the master disk at the time of producing the stamper is prevented.
SANTO TAKESHI
KAMITAKAHARA HIROFUMI
YOSHINO HITOSHI
KUSHIDA NAOKI
