Electrolysis: processes – compositions used therein – and methods – Electroforming or composition therefor – Recording device
Patent
1991-12-18
1992-12-01
Tufariello, T. M.
Electrolysis: processes, compositions used therein, and methods
Electroforming or composition therefor
Recording device
204297R, C25D 110, C25D 1706
Patent
active
051677920
ABSTRACT:
Disclosed are a master holder of a stamper electroforming apparatus and an electroforming method using this master holder. The master holder is for use in a stamper electroforming apparatus that forms a metal film by electroforming on a conductive film formed on a master having a minute relief pattern on its surface; and this master includes: a contact ring for electrically connecting the conductive film to a power source; and a structure for controlling the rate at which the metal film is formed, which structure is provided on the contact ring and adapted to control the metal-film-formation rate such that the thickness of a peripheral portion of the metal film gradually decreases in the vicinity of the contact ring.
Hayashi Hisanori
Kamitakahara Hirofumi
Kanome Osamu
Kushida Naoki
Yoshino Hitoshi
Canon Kabushiki Kaisha
Tufariello T. M.
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