Fine-structure transfer apparatus

A fine-structure transfer apparatus for transferring a fine structure to both sides of a transfer element or an annular disk of substrate having a through-hole of a predetermined inner diameter in the center, which apparatus comprises a lower fine-structure transfer device and an upper fine-structure transfer device, wherein:

• the lower fine-structure transfer device comprises a base plate, a first post and a second post erected to face up on the upper surface of the base plate, a lower elongated stamper that is fixed at one end to the upper end face of the first post and which is supported at the other end in a vertically movable fashion by means of an ascending and descending unit provided on the second post, a transfer element holding cylindrical stage provided on the upper surface of the base plate between the first and second posts in a position that corresponds to that position of the upper surface of the lower elongated stamper where a fine-featured pattern is formed, a lower pressure-applying unit provided on the upper surface of the base plate for pressing the lower elongated stamper against the lower surface of the transfer element from below the lower elongated stamper, and a lower UV light irradiating unit provided on the lower surface of the base plate, the transfer element holding cylindrical stage having a cylindrical projection of a predetermined outer diameter provided on the upper end face, a through-hole of a predetermined inner diameter being opened in the center of the fine-featured pattern on the upper side of the lower elongated stamper, and the transfer element holding cylindrical stage being passed through the through-hole;
• and
• the upper fine-structure transfer device comprises a base plate, a first post and a second post erected to face down on the lower surface of the base plate, an upper elongated stamper that is fixed at one end to the upper end face of the first post and which is supported at the other end in a vertically movable fashion by means of an ascending/descending unit provided on the second post, an upper pressure-applying unit provided on the lower surface of the base plate for pressing the upper elongated stamper against the upper surface of the transfer element from above the upper elongated stamper, and an upper UV light irradiating unit provided on the upper surface of the base plate, a through-hole of a predetermined inner diameter being opened in the center of the fine-featured pattern on the lower side of the upper elongated stamper such that the cylindrical projection on the upper end face of the transfer element holding cylindrical stage can be passed through the through-hole;
• and wherein
• the lower fine-structure transfer device and the upper fine-structure transfer device are positioned in symmetry with respect to the center point of the transfer element holding cylindrical stage.