| Patent Number |
Title Of Patent |
Date Issued |
| 6558740 |
Printing medium, production process thereof and image-forming process using the medium |
May 6, 2003 |
| Disclosed herein is a printing medium comprising a substrate and an ink-receiving layer which comprises an alumina hydrate surface-treated with a coupling agent and is provided on the substrate. |
| 5965252 |
Printing medium |
October 12, 1999 |
| Disclosed herein is a printing medium comprising a substrate and an ink-receiving layer which comprises an alumina hydrate surface-treated with a coupling agent and is provided on the substrate. |
| 5605732 |
Aminium salt compound and optical recording medium |
February 25, 1997 |
| An aminium salt compound has the structure expressed by the following formula (I) or (II), and an optical recording layer has a recording layer containing the aminium salt compound. ##STR1## wherein X.sup.- indicates a monovalent metal complex anion; and R.sub.1 through R.sub.8 e |
| 5516469 |
Process for producing substrate sheet for information recording mediums |
May 14, 1996 |
| The present invention provides a process using a roll stamper which molds a substrate sheet for information recording mediums by continuously transferring preformat patterns on a resin sheet. The roll stamper has the feature that the preformat pattern on the roll stamper has a value of b |
| 5482822 |
Infrared-absorptive compound and optical recording medium making use of the same |
January 9, 1996 |
| An infrared-absorptive compound is disclosed which has the structure represented by the following formula (I) or (II) ##STR1## Also, an optical recording medium having a recording layer containing the infrared-absorptive compound is disclosed. |
| 5480596 |
Optical recording medium substrate sheet producing apparatus having roll stamper with elastomer |
January 2, 1996 |
| An apparatus and method for producing an optical recording medium or an optical recording medium substrate sheet forms an photo-curable resin layer on at least one of a substrate sheet and a stamper which undergoes elastic deformation. The stamper bears a pattern corresponding with p |
| 5479394 |
Optical recording medium, recording system and reproducing system |
December 26, 1995 |
| An optical recording medium includes in sequence a transparent substrate, a light-reflecting layer, a transparent intermediate layer and a light-absorbing layer. The light-reflecting layer, the transparent intermediate layer and the light-absorbing layer in combination constitute a m |
| 5432770 |
Optical recording medium, method of reproducing recorded data of optical recording medium, and s |
July 11, 1995 |
| An optical recording medium has a substrate and, provided thereon, a recording layer, a recording auxiliary layer that covers a given region on the surface of the recording layer on its side not facing the substrate, and a recording restraining layer that the covers the recording layer o |
| 5428599 |
Optical recording medium, information recording method and information reproducing method |
June 27, 1995 |
| An optical recording medium includes in sequence a transparent substrate, a light-reflecting layer, a transparent intermediate layer and a light-absorbing layer. The light-reflecting layer and the light-absorbing layer are respectively formed as a layer of an organic coloring matter. |
| 5328816 |
Process for producing optical recording medium |
July 12, 1994 |
| A process for producing an information recording medium comprising a substrate and provided thereon a recording layer and protective layer comprises the steps of forming on one substrate sheet a plurality of grooved preformats used for information recording mediums, forming a recordi |
| 5324188 |
Roller stamper for molding a substrate sheet to become an information recording medium |
June 28, 1994 |
| A roll stamper which molds a substrate resin sheet into an information recording media by continuously transferring preformat patterns on the substrate resin sheet, and a production process therefor. The preformat pattern on the roll stamper has a value of b/a of greater than 1 when the |
| 5310333 |
Roll stamper for molding substrate used for optical recording medium |
May 10, 1994 |
| A roll stamper has a roll substrate and a stamper fixed thereto and having a convexity and concavity preformat pattern. The stamper has an auxiliary layer, including a material different from that of the stamper and a back surface on which the convexity and concavity preformat pattern is |
| 5275925 |
Infrared-absorptive compound containing optical recording medium |
January 4, 1994 |
| An infrared-absorptive compound represented by the following Formula (I) or (II). ##STR1## to be contained with an organic coloring matter in the recording layer for providing durable optical recording mediums. |
| 5271979 |
Optical recording medium containing polymethine compound |
December 21, 1993 |
| An optical recording medium including a recording layer containing a polymethine compound which can be expressed by the following formula: ##STR1## where R.sub.1 and R.sub.2 represent aryl groups substituted by alkyl groups, or aryl groups substituted by alkoxy groups; R.sub.3 and R. |
| 5267228 |
Substrates for optical cards, process for preparing substrates for optical cards, optical cards |
November 30, 1993 |
| A substrate for an optical card having tracking grooves in a stripe form formed on the surface of an extrusion-molded thermoplastic resin sheet is characterized in that the direction of the tracking grooves is in parallel to the extrusion direction of the thermoplastic resin sheet, and t |
| 5266136 |
Process for producing a roll stamper for molding a substrate sheet for information recording med |
November 30, 1993 |
| A process for producing a roll stamper which molds a substrate sheet for information recording mediums by continuously transferring preformat patterns on a resin sheet. The roll stamper has the feature that the preformat pattern on the roll stamper has a value b/a of greater than 1, |
| 5245030 |
IR-ray absorptive amino compound and optical recording medium by use thereof |
September 14, 1993 |
| An IR-ray absorptive compound represented by the formula (1) or (2): ##STR1## and an optical recording medium having a substrate and an organic dye thin film, comprising the formulae (1) and/or (2). |
| 5190849 |
Optical recording medium containing carboxylic acid-base metallic complex and squarylium-base or |
March 2, 1993 |
| An optical recording medium contains at least one squarylium- or croconium-base dye of formulae [I] or [II], and a carboxylic acid-base metallic complex: ##STR1## where A.sym. is a cationic bivalent organic residue and B is a monovalent organic residue. The optical recording medi |
| 5137661 |
Process for producing optical recording medium |
August 11, 1992 |
| A process for producing an optical recording medium, including the steps of: melt-extruding a resin to form a resin sheet; passing the resin sheet under pressure between a first roller having a predetermined unevenness pattern and a second roller disposed opposite thereto before the resi |
| 5108873 |
IR-ray absorptive compound and optical recording medium by use thereof |
April 28, 1992 |
| An IR-ray absorptive compound represented by the formula (1) or (2): ##STR1## and an optical recording medium having a substrate and an organic dye thin film, comprising the formulae (1) and/or (2). |
| 5048745 |
Roll stamper for molding substrate used for optical recording medium, process for preparing same |
September 17, 1991 |
| A roll stamper for continuously preparing a substrate used for optical recording mediums, having a convexity and concavity preformat pattern, is prepared by a process comprising the steps of forming a low-melting metal layer on a roll substrate, and forming an auxiliary layer comprising |
| 5024917 |
Optical recording medium containing meta-position aluminium-type IR-ray absorptive compound |
June 18, 1991 |
| The present invention provides an IR-ray absorptive compound having a specific structural formula and an optical recording medium. The IR-ray absorptive compound has excellent characteristics that absorption in the infrared region is large and improved in solvent solubility.In corporatio |
| 5009987 |
Optical recording medium containing IR-ray absorptive compound |
April 23, 1991 |
| The present invention relates to an optical recording medium comprising at least one of the following IR-ray absorptive compounds: ##STR1## Incorporation of the IR-ray absorptive compound of the present invention into an optical recording medium noticeably improves the durability of |
| 4871601 |
Optical information recording carrier |
October 3, 1989 |
| An optical information recording carrier comprises an optical recording layer provided on a transparent substrate, a film coating layer laminated with out adhesion on said optical recording layer, and further a fixing layer laminated thereon to fix said film coating layer. |
