Fuji Photo Film Company, Limited

Fujifilm Corporation

Masashi Aoki

Masakazu Nishikawa

Akito Kamatani

Tsuneo Inui

Kazunori Komatsu

Kazuyuki Usuki

Shigehisa Shimizu

Takayuki Fujiwara

Hisashi Takahashi

Kunihiro Sumida

Norihiro Kadota

Satoshi Mino

Junichi Nakamikawa

A magnetic transfer wherein the exchange of master mediums is made easy to perform is provided, whereby the operational efficiency and transfer efficiency are improved, leading to an overall improvement in productivity in the manufacture of preformatted slave mediums. A master fixing base for determining and supporting the position of a master medium, which bears transfer data, and a conjoining apparatus for conjoining the master medium and the slave medium that is to receive the transfer therefrom are provided. The master medium is exchanged along with the master fixing base. It is preferable that a cleaning means be provided.

Method and apparatus for magnetic transfer

Information represented by a pattern of a magnetic layer formed on a master information carrier is magnetically transferred to a slave. An initial DC magnetic field is applied to the slave medium with the slave medium supported from one side thereof so that the other side of the slave medium is directly opposed to the magnetic field generator, and a transfer magnetic field is applied to the slave medium and the master information carrier held in close contact with each other by a holder, which covers both the sides of the slave medium/master information carrier assembly, with the magnetic field generator positioned to oppose both the sides of the slave medium/master information carrier assembly so that the magnetic field generated by the magnetic field generator is applied to the slave medium and the master information carrier through the holder.

Method of magnetic transfer using a side-supported slave medium directly opposed to the magnetic field generator

When a master medium and a slave medium are brought into close contact and a transfer magnetic field is applied thereto to perform magnetic transfer, the leakage magnetic field intensity of the transfer magnetic field is regulated to within a permissible range, making possible the transfer of an exact magnetic pattern. After a magnetic field is applied to the slave face in the track direction thereof to initially magnetize the slave medium in the track direction, the master medium and the slave medium are brought into close contact. When applying a transfer magnetic field in the track direction of the slave face to perform a magnetic transfer, the magnetic field intensity component in the direction opposite that in which the transfer magnetic field is to be applied is regulated to less than or equal to &#xbd; the magnetic coercive force Hcs of the slave medium over the entire slave surface.

Magnetic transfer method and apparatus

A magnetic transfer apparatus capable of enhancing the quality of a transfer signal by improving close contact property between master and slave media in magnetic transfer carried out to magnetically transfer an information signal such as a servo signal from the master medium to the slave medium. In the magnetic transfer specifically carried out by applying a transfer magnetic field in a close contact state of the master medium bearing information and the slave medium, the master and slave media are closely contacted with each other in a state where the backside of the master medium is adsorbed and held on the flat adsorbing surface of an adsorbing member to heighten the flatness of the master medium. In the case of one-surface transfer, preferably, an elastic body is closely contacted with the surface opposite to the master medium on the slave medium.

Magnetic transfer apparatus

A method of manufacturing a magnetic recording medium having a disc-shaped flexible slave medium accommodated in a case, onto which servo signals are effectively recorded by a magnetic transfer method with high quality. The method includes a slitting step for cutting an original sheet into discrete webs; a punching step for obtaining a disc-shaped slave medium; a thermo step for removing distortion; a burnishing step for smoothing a surface of the slave medium; a center core attachment step; a magnetic transfer step for performing a magnetic transfer while a master medium is allowed to be brought into close contact with one of the web and the slave medium; an assembly step for incorporating slave medium into the case; a cleaning step for cleaning a surface of the slave medium; a verifying step for checking the servo signals; and a packing step.

Method of manufacturing magnetic recording medium

A magnetic transfer method for magnetically transferring information signals such as servo signals from a master medium to a slave medium, capable of reducing a range of signal missing due to insufficient contact of the two mediums originating from an adhering substance, thus enhancing signal quality. When the master medium bearing an information signal and the slave medium are brought into close contact with each other, a transferring magnetic field is applied thereto, thus magnetically transferring the information signal from the master medium to the slave medium. An elastic member made of a material having an elastic property so as to deform in accordance with a surface shape of the slave medium during contact pressure application and to restore to an original surface shape thereof during release of the slave medium from the master medium can be interposed between a back of the slave medium and a pressing surface of a pressing support member.

Method of magnetically transferring information signal from master medium to slave medium

A trimming processing device automatically processes trimmings generated when a running wide web is slit in the running direction of the web into a plurality of strips having desired widths. A trimming cutting unit movable in the transverse direction of the web cuts the trimmings in the transverse direction of the trimmings, and a trimming conveyor unit movable in the transverse direction of the web conveys the trimmings away from the web. The positions of the trimming cutting unit and the trimming conveyor unit are controlled according to the position of the trimmings which varies according to the width of the web and the width and the number of the strips to be slit from the web.

Automatic trimming processing device

Packages of a rolled photosensitive material comprise a core and a photosensitive material wound around the core, and one package further comprises a light-shielding leader connected with an end of the photosensitive material to shield the circumferential surface of the photosensitive material from light and a pair of light-shielding covers adhered to both sides of the leader in a peelable state to shield the side surfaces of the photosensitive material. Another package further comprises a light-shielding leader connected with an end of the strip material to shield the circumferential surface of the photosensitive material from light and a pair of side light-shielding covers adhered to shield both sides of the rolled photosensitive material so that the joining end substantially conforms to a boundary between the circumferential surface and the side surface of the photosensitive material, wherein at least one of the light-shielding leader and the side light-shielding cover is made of a tearable material in the boundary direction.

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Kanagawa-ken, Japan

Masashi Aoki