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 |
20090290467 | MULTILAYER INFORMATION RECORDING MEDIUM - A multilayer information storage medium according to the present invention includes: a substrate; at least three information storage layers, which are stacked one upon the other on the substrate; a plurality of transparent layers, each of which is arranged between its associated adjacent ones of the information storage layers; and a transparent coating layer. At least two of the transparent layers have mutually different thicknesses. If a laser beam with a wavelength of 400 nm to 410 nm is incident perpendicularly on the medium through the transparent coating layer, two of the information storage layers that sandwich the thinnest one of the transparent layers have a higher returning light intensity and/or a higher degree of modulation than the other information storage layers. | 11-26-2009 |
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 |
20100003444 | MANUFACTURING METHOD FOR MULTILAYER INFORMATION RECORDING MEDIUM, MANUFACTURING APPARATUS FOR MULTILAYER INFORMATION RECORDING MEDIUM, AND MULTILAYER INFORMATION RECORDING MEDIUM - An apparatus for manufacturing a multi-layered information recording medium of the present invention is an apparatus for manufacturing the multi-layered information recording medium for discharging a stiffening resin to a substrate while relatively moving at least one of the substrate and ink jet heads wherein the apparatus has a plurality of ink jet heads disposed on every different kind of the discharged stiffening resin, and constituted so as to stack-coat the stiffening resin to the substrate. With the constitution, a resin intermediate layer of a thick film, for example, greater than 10 μm having uniform thickness distribution and excellent in surface smoothness can be formed. | 01-07-2010 |
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 |
20100129567 | METHOD FOR MANUFACTURING INFORMATION RECORDING MEDIUM - A problem has been the pronounced build-up of resin layers in the innermost peripheral region and/or the outermost peripheral region, which are the ends of the coating region, that occurs when layers of resin are applied over intermediate resin layers that have been cured. In an inkjet coating method, the ratio of the amount of resin dropped in the innermost peripheral coating region ( | 05-27-2010 |
20100149932 | OPTICAL RECORDING MEDIUM, AND OPTICAL INFORMATION DEVICE - An object of the invention is to provide an optical recording medium and an optical information device that enable to improve the quality of a servo signal and a reproduction signal. In the case where shape-wise thicknesses tr | 06-17-2010 |
20100195474 | OPTICAL INFORMATION RECORDING MEDIUM AND RECORDING AND REPRODUCTION APPARATUS - A disk-shaped optical information recording medium ( | 08-05-2010 |
20110051585 | MANUFACTURING METHOD FOR OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MEDIUM, OPTICAL INFORMATION DEVICE, AND INFORMATION REPRODUCING METHOD - An object of the invention is to improve the quality of a servo signal and a reproduction signal. Shape-wise thicknesses tr | 03-03-2011 |
20110075534 | OPTICAL RECORDING MEDIUM, AND OPTICAL INFORMATION DEVICE - An object of the invention is to provide an optical recording medium and an optical information device that enable to improve the quality of a servo signal and a reproduction signal. In the case where shape-wise thicknesses tr | 03-31-2011 |
20110078711 | OPTICAL RECORDING MEDIUM, AND OPTICAL INFORMATION DEVICE - An object of the invention is to provide an optical recording medium and an optical information device that enable to improve the quality of a servo signal and a reproduction signal. In the case where shape-wise thicknesses tr | 03-31-2011 |
20110170394 | MANUFACTURING METHOD FOR OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MEDIUM, OPTICAL INFORMATION DEVICE, AND INFORMATION REPRODUCING METHOD - An object of the invention is to improve the quality of a servo signal and a reproduction signal. Shape-wise thicknesses tr | 07-14-2011 |
20110229679 | MANUFACTURING METHOD OF INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING MEDIUM - A method for manufacturing an information recording medium including N information layers, (N−1) intermediate layers interposed between the information layers and a protective layer laminated on the Nth information layer placed on a substrate formed with a first reference point, including: forming the information layer on the substrate; repeating (N−1) times a process of applying radiation curable resin on the information layer, a process of affixing a transfer stamper formed with a second reference point to the radiation curable resin, a process of curing the radiation curable resin by irradiation, and a process of forming the intermediate layer by peeling the transfer stamper at an interface with the radiation curable resin, in order to form the (N−1) information layers and the (N−1) intermediate layers and thereafter form the Nth information layer; and forming the protective layer on the Nth information layer, wherein in the process of affixing the transfer stamper to the radiation curable resin, the transfer stamper is affixed so that the second reference point of the transfer stamper is each time at a different position with respect to the first reference point of the substrate. | 09-22-2011 |
20120011524 | OPTICAL RECORDING MEDIUM, AND OPTICAL INFORMATION DEVICE - An optical recording medium and an optical information device that improve the quality of a servo signal and a reproduction signal. In the optical recording medium, when shape-wise thicknesses tr | 01-12-2012 |
20120113787 | MANUFACTURING METHOD FOR OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MEDIUM, OPTICAL INFORMATION DEVICE, AND INFORMATION REPRODUCING METHOD - Shape-wise thicknesses tr | 05-10-2012 |
20120213044 | MANUFACTURING METHOD FOR OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MEDIUM, OPTICAL INFORMATION DEVICE, AND INFORMATION REPRODUCING METHOD - Shape-wise thicknesses of a cover layer and first through (N−1)th intermediate layers of an optical recording medium having refractive indexes nr | 08-23-2012 |
20120213045 | MANUFACTURING METHOD FOR OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MEDIUM, OPTICAL INFORMATION DEVICE, AND INFORMATION REPRODUCING METHOD - Shape-wise thicknesses of a cover layer and first through (N−1)th intermediate layers of an optical recording medium having refractive indexes nr | 08-23-2012 |