摘要:
Disclosed is an optical switch of the rotary-type in which a pair of opposing optical transmission path mounting members are disposed on the same axis.A plurality of junction faces of optical transmission paths disposed on the respective opposing plane portions of the mounting members along phantom circles which are opposite to each other and concentric with the pair of mounting members respectively with respect to the axis so that the junction faces on the respective plane portions are capable of being correspondingly opposite to each other.When the pair of the mounting members are relatively rotated about the axis, the facing mates of the opposing junction faces of the optical transmission paths are changed over to switch the optical transmission paths.In the case where an optical path relay member is interposed between the pair of the optical transmission path mounting members, the optical transmission paths can be switched by only the rotation of the optical path relay member.
摘要:
A transfer mold for manufacturing a recording medium by imprinting, having a transfer surface on which a data area having a data track pattern for a disk-shaped recording medium and a dummy area having a dummy pattern in an outward portion and/or an inward portion of the data area are formed. The dummy pattern includes at least one line of a plurality of dummy protrusions that have a width in a disk radial direction of no less than a track pitch of the data track pattern.
摘要:
After a transfer material was hardened in a situation an imprint mold which has a concave part pattern is forced against the liquid transfer material, a replica which has a convex part pattern corresponding to the concave part pattern by releasing the imprint mold. A pressurization mechanism and a vacuum pump are set, regarding depth K of the concave part pattern of the imprint mold, height k of the convex part pattern of the transfer material, effective pressure Mo while the imprint mold is forced, pressure P in the space, with satisfying: Mo/P≧k/(K−k). With this arrangement, even if air comes inside of the concave part pattern of the imprint mold and is stuffed in the inside, it is possible to have transcription with no problem.
摘要翻译:在转印材料硬化的情况下,具有凹形图案的压印模具被迫抵靠液体转印材料,通过释放压印模具具有与凹形图案对应的凸形图案的复制品。 设置加压机构和真空泵,关于压印模具的凹部图案的深度K,转印材料的凸部图案的高度k,压印模具被强制时的有效压力Mo,空间中的压力P ,满足:Mo / P> = k /(Kk)。 通过这种布置,即使空气进入压印模具的凹形图案内部并且填充在内部,也可以没有问题地进行转录。
摘要:
A main object of the present invention is to provide: an environmentally friendly substrate for recording medium which has good adhesion to a resin layer, and a manufacturing method thereof. To attain the object, the present invention provides a substrate for recording medium comprising: a resin substrate containing a separating material which blooms or bleeds toward its surface, a barrier layer which is formed on the resin substrate and made of a metal compound used to block the separating material, and a resin layer formed on the barrier layer.
摘要:
An information recording medium has an excellent jitter characteristic with a considerable difference in reflectance between prior to and subsequent to recording. The information recording medium includes a recording layer which contains a material having a reflectance which varies by irradiation of a light beam, on which information is recorded as reflectance variations, and a substrate for supporting the recording layer, the recording layer including a metal nitride as a major component. In a method of manufacturing the information recording medium having a recording layer which includes a material having a reflectance which varies by irradiation of a light beam, on which information is recorded as reflectance variations, and the substrate for supporting the recording layer, the recording layer including a metal nitride as a major component, the method includes a recording layer forming step for forming the recording layer by a reactive sputtering method which uses a target comprised of a metal constituting a metal nitride, wherein a flow ratio Ar:N2 in an atmosphere including Ar and N2 in the recording layer forming step is set within the range of 80:10 to 10:80.
摘要:
An object of the present invention is to provide a phase-change optical recording medium of an amorphous recording mark type. The optical recording medium is a write once type medium capable of decreasing the degradation of an information signal which has been already recorded. The recording layer of the optical recording medium according to the present invention includes a first recording layer and a second recording layer. The first recording layer comprises a first composition which can be changed into another composition more stable in an amorphous state by combining with a component included in the second recording layer.
摘要:
The main object of the present invention is to provide an optical recording medium with no need to use a control subject substance of the PRTR law, capable of using for an optical recording device with a blue laser, and giving consideration to the environmental aspect.To attain the object, the present invention provides an optical recording medium comprising: a reflective layer containing an aluminum composition as the main component including both aluminum or an aluminum alloy and a metal oxide of a metal other than aluminum; and a dielectric protective layer, formed in contact with the reflective layer, containing a niobium composition as the main component including both silicon dioxide or titanium dioxide and a niobium nitrided oxide.
摘要:
A polycrystalline aluminum thin film is made of polycrystals of an alloy of aluminum. The polycrystalline aluminum thin film includes a first additive which is distributed with even concentration over an inside of each crystal grain and an interface of the crystal grain and a second additive which is distributed with higher concentration in the interface of the crystal grain than in the inside of the crystal grain.
摘要:
A signal generating unit of a formatter inputs a misalignment amount δ unique to an individual recording apparatus and record data into a record signal compensation unit, and in accordance with these the record signal compensation unit generates a compensated beam deflection signal and substrate velocity signal to a beam unit and rotation and movement drive unit. With this arrangement, it is possible to perform compensation which matches errors in individual unit, in response to the errors (mechanical errors) in assembly dimension precision of parts and control precision of control devices which can vary among individual unit of the recording apparatus.
摘要:
Diffusion of water or oxygen present in the dielectric protection film is restrained by eliminating free oxygen in an oxide thin film while maintaining the characteristics of a dielectric protection film. As the dielectric material for forming a dielectric protection film for an optical disc or the like, an oxide mixture thin film of a niobium oxide and one of a silicon oxide and a titanium oxide is used. In a preferable example, a target made of a niobium oxide as the main component with 1 to 30% by weight of a silicon oxide added is used for formation of an oxide thin film by sputtering. Moreover, the oxide thin film is formed preferably in a nitrogen atmosphere. A nitrogen containing oxide thin film is produced by carrying out sputtering using a target with the oxygen lacked and a minute amount of nitrogen added. Thereby, a thin film having little reducing function and a high barrier property while having the characteristics comparable to a complete oxide can be produced.