Dai Nippon Printing Co., Ltd.

Hirokazu Oda

Yuki Aritsuka

Takaharu Nagai

Naoko Nakata

Saburou Harada

Shintaro Nasu

Masakazu Kaneko

A photocurable resin composition for imprinting including a polymerizable compound, and a photopolymerization initiator, wherein the polymerizable compound includes a siloxane bond in a molecule, and includes at least one polymerizable functional group, and a ratio of oxygen atoms bonded to a single silicon atom, among oxygen atoms bonded to a silicon atom included in the polymerizable compound, is 10 mol % or less.

Photocurable resin composition for imprinting, method for producing photocurable resin composition for imprinting, and method for producing pattern formed body

Provided are: an imprinting method which suppresses volatilization of a photocurable resin applied on a transfer-receiving substrate by an inkjet method, satisfactorily maintains the wet-spreading property of the resin at the time of transfer, maintains cleanness of the environment for transfer, and can fill the environment for transfer with a particular gas appropriate for transfer; and an imprinting apparatus. Disclosed is an imprinting method of using a template having a concavo-convex pattern formed thereon, and transferring the pattern of the template by imprinting to a photocurable resin on a transfer-receiving substrate, characterized in that, in a space where the template and the photocurable resin are brought into contact, clean air is sent to the space through an air blowing port during a standby mode of not performing imprinting, and the flow rate of clean air in the space is reduced or clean air is not sent during an imprinting mode.

Imprinting method and imprinting apparatus

The same digital data is recorded with highly integrated manner on a plurality of media able to durably hold information over long-term. A minute graphic pattern indicating data bit information is drawn on a resist layer formed on a quartz glass substrate by exposing a beam and developed so as to prepare a master medium (M), which comprises the quartz glass substrate having a minute recess and protrusion structure formed by etching where the remaining resist are used as a mask (FIG. (a)). The recess and protrusion structure recorded on the master medium (M) is shaped and transferred onto a flexible recording medium (G) on which a UV curable resin layer () is formed, whereby an intermediate medium (M) is prepared (FIGS. (b)-(d)). The inverted recess and protrusion structure transferred to the intermediate medium (M) is shaped and transferred onto a recording medium (G) comprising a quartz glass substrate () on which a UV curable resin layer () is formed, whereby a reproduction medium (M) having the same recess and protrusion structure as that of the master medium (M) is prepared (FIGS. (e)-(h)). In shaping and transferring process, the media are separated using the flexibility of the intermediate medium (M).

Method for manufacturing information recording medium

A data storage medium includes a convexoconcave structure formed in a storage area which is set on a first surface of a quartz glass substrate. The storage area includes a plurality of unit storage areas which are arrayed at least in one direction, and non-data storage areas which are disposed between the unit storage areas, which are adjacent to each other. The convexoconcave structure includes unit data patterns, address patterns and boundary patterns. The unit data patterns are formed in the plurality of unit storage areas respectively in the array sequence of the unit storage areas, and the address patterns are formed in the non-data storage areas so as to correspond to each of the unit storage areas in which the unit data patterns are formed respectively.

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Tokyo, Japan

Hirokazu Oda