Patent application number | Description | Published |
20090075016 | MULTILAYER INFORMATION RECORDING MEDIUM AND PRODUCTION METHOD THEREFOR - Disclosed herein is a method for producing a multilayer information recording medium having at least two information recording layers, in which a resin layer is formed between each pair of the information recording layers, the method including: holding a substrate; feeding a resin onto the substrate; and removing the excess resin by moving a squeegee throughout the entire surface of the substrate so that the interval between the bottom surface of the squeegee and the surface of the substrate is kept constant. The substrate may have a resin-coated region, onto which the resin is to be applied, and a non-resin-coated region, onto which the resin is not to be applied. In this case, the resin-coated region has a smaller contact angle with the resin than the non-resin-coated region. The method for producing a multilayer information recording medium may further include, prior to feeding a resin onto the substrate, subjecting a specified area of the substrate to an oil repellent treatment to increase the contact angle of the specified area with the resin. | 03-19-2009 |
20090280286 | MULTILAYER INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - A multi-layer information recording medium comprising a substrate that has an inner circumference and an outer circumference, three or more information recording layers and resin layers disposed between the information recording layers, wherein positions of the ends on the inner circumference side of the resin layers are different from each other in at least one combination of two neighboring resin layers, and the end on the inner circumference side of at least one of the resin layers is covered by another resin layer. | 11-12-2009 |
20090309906 | INKJET APPLICATION DEVICE, MULTI-LAYERED INFORMATION RECORDING MEDIUM, AND METHOD OF PRODUCING THE MEDIUM - An inkjet coating device, which applies a radioactive-ray curable resin to a subject, while moving either the subject or an inkjet head relative to the other, includes an inkjet head provided with an inkjet unit having an inkjet nozzle for ejecting droplets of the radioactive-ray curable resin and a radioactive-ray irradiation unit that is placed on the rear side of the inkjet unit in a moving direction relative to the subject so as to be spaced therefrom with a predetermined distance, and irradiates the radioactive-ray curable resin coated onto the subject with radioactive rays; and a driving unit that moves the inkjet head relative to the subject. | 12-17-2009 |
20100110871 | OPTICAL INFORMATION RECORDING MEDIUM - The recording/reproducing quality of a multilayer optical information recording medium deteriorate not only due to interference from other layers caused by light converging on other information layers but also due to stray light converging on the surface of a protective layer and stray light that does not converge on other information layers but rather returns to an optical head through the same optical path as the reproducing signal. The thickness composition of intermediate layers ( | 05-06-2010 |
20100137506 | PROCESS FOR PRODUCING MULTI-LAYERED INFORMATION RECORDING MEDIUM, SIGNAL TRANSFER SUBSTRATE, AND PROCESS FOR PRODUCING THE SIGNAL TRANSFER SUBSTRATE - In a process for producing a multilayered information recording medium of the present invention, a process for forming a second signal substrate ( | 06-03-2010 |
20100151177 | MULTILAYERED INFORMATION RECORDING MEDIUM AND PROCESS FOR PRODUCING SAID MULTILAYERED INFORMATION RECORDING MEDIUM, AND APPARATUS FOR PRODUCING MULTILAYERED INFORMATION RECORDING MEDIUM AND SCREEN CONSTITUTING SAID PRODUCTION APPARATUS FOR PRODUCING MULTILAYERED INFORMATION RECORDING MEDIUM - The present invention provides a method for manufacturing a multilayer information recording medium including at least two information recording portions and a resin layer interposed between the information recording portions, both of which are disposed on a signal substrate. The method includes a first process of forming a predetermined information recording portion on one principal surface of the signal substrate and a second process of passing a part of a resin-containing coating, which is supplied on a screen having an application region with a plurality of first pores and a removal region with a plurality of second pores, through the first pores by sliding a squeegee on the screen so as to form a coating layer on the predetermined information recording portion, and curing the resin contained in the coating layer so as to form the resin layer. The first process and the second process are carried out respectively a predetermined number of times. In each second process, at least a part of the resin-containing coating that has not been applied on the predetermined information recording portion and that remains on the screen is allowed to pass through the second pores so as to be removed from the screen surface. | 06-17-2010 |
20100157784 | MANUFACTURING METHOD FOR OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING MEDIUM - There is provided a manufacturing method for an optical information recording medium having three information recording layers, two intermediate layers, and one light transmitting layer, the method includes: providing a first UV curable resin on a first information recording layer; forming a first intermediate layer by curing the first UV curable resin by performing first-time UV irradiation to irradiate the first UV curable resin with UV light emitted from above the first UV curable resin at a first dose; providing a second information recording layer on the first intermediate layer; providing a second UV curable resin on the second information recording layer; forming a second intermediate layer by curing the second UV curable resin by performing second-time UV irradiation to irradiate the second UV curable resin with UV light emitted from above the second UV curable resin at a second dose; providing a third information recording layer on the second intermediate layer; providing a third UV curable resin on the third information recording layer; and forming a light transmitting layer by curing the third UV curable resin by performing third-time UV irradiation to irradiate the third UV curable resin with UV light emitted from above the third UV curable resin at a third dose, wherein the first UV curable resin and the second UV curable resin have substantially the same characteristics in terms of the relationship between total UV dose received and coefficient of linear expansion, and wherein the first dose during the first-time UV irradiation, the second dose during the second-time UV irradiation, and the third dose during the third-time UV irradiation are controlled so that a total UV dose received by the first intermediate layer and a total UV dose received by the second intermediate layer become substantially the same. | 06-24-2010 |
20100255347 | INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING SAME - A method for manufacturing an information recording medium may used for manufacturing the information recording medium which has a recording layer and a resin layer that may be provided in contact with the recording layer. In the method, the resin layer is made of at least two kinds of ultraviolet curing resins. First resin layer is formed by screen printing. Second resin layer is formed on the first resin layer as to compensate a surface property. Consequently, a surface nature of the resin layer can be improved. | 10-07-2010 |
20110069603 | MULTILAYER INFORMATION RECORDING MEDIUM MANUFACTURING METHOD, MULTILAYER INFORMATION RECORDING MEDIUM MANUFACTURING APPARATUS, AND MULTILAYER INFORMATION RECORDING MEDIUM - The invention provides a multilayer information recording medium manufacturing method, a multilayer information recording medium manufacturing apparatus, and a multilayer information recording medium that enable to make a distance from a light incident surface of the multilayer information recording medium to a farthest information recording layer thereof uniform within a plane of the medium. A multilayer information recording medium manufacturing apparatus ( | 03-24-2011 |
20110223345 | METHOD FOR MANUFACTURING MULTILAYER INFORMATION RECORDING MEDIUM - A substrate formed of an organic-inorganic hybrid material and provided with a reinforcement member in an inner periphery portion is used, as a signal transfer substrate, in a method for procuring a multilayer information recording medium having “n” information recording layers (“n” is an integer of two or more), the method including: applying an ultraviolet curable resin on a “k”th information recording layer (“k” is an integer of from 1 to (n−1)); bonding the signal transfer substrate having a signal surface including a concavo-convex shaped signal portion, to the applied resin, with the signal surface facing the resin; curing the resin by applying an ultraviolet ray to the resin from the substrate side while the substrate is bonded to the resin; and peeling the substrate from the cured resin by warping the inner periphery portion of the substrate. This method enables the signal transfer substrate to be used repeatedly. | 09-15-2011 |
20120013675 | MULTILAYER INFORMATION RECORDING MEDIUM, AND APPARATUS AND METHOD FOR MANUFACTURING SAME - The present invention provides an apparatus for fabricating a multi-layer information recording medium including a substrate, plural information recording layers placed on the aforementioned substrate, resin intermediate layers placed between adjacent information recording layers and a resin protective layer placed on all the information recording layers at the side opposite from the aforementioned substrate, the apparatus including an ejecting unit including ink jet nozzles operable to drip minute resin liquid drops onto the aforementioned substrate or the aforementioned information recording layers; and a control unit operable to control the aforementioned ejecting unit, whereby resin layers which form said resin intermediate layers or said resin protective layer are formed on the aforementioned substrate or the aforementioned information recording layers. | 01-19-2012 |