| Patent Number |
Title Of Patent |
Date Issued |
| 7554896 |
Electron beam recording apparatus |
June 30, 2009 |
| An electron beam recording apparatus provided with control means for forming a latent image in a resist layer on a disk substrate corresponding to a predetermined pattern by controlling the irradiation position of an electron beam irradiation unit on the surface of the resist layer i |
| 7065034 |
Optical disc and apparatus for manufacturing a master disc therefor |
June 20, 2006 |
| A master-disc-manufacturing apparatus includes an electron-beam emitting portion for emitting an electron beam, an electron-beam converging portion for converging an electron beam, a retarding voltage applying portion for applying a substrate with a negative potential having a magnit |
| 6882615 |
Optical disc and apparatus for manufacturing a master disc therefor |
April 19, 2005 |
| A master-disc-manufacturing apparatus includes an electron-beam emitting portion for emitting an electron beam, an electron-beam converging portion for converging an electron beam, a retarding voltage applying portion for applying a substrate with a negative potential having a magnitude |
| 6849390 |
Stamper-forming electrode material, stamper-forming thin film, and method of manufacturing optic |
February 1, 2005 |
| A stamper-forming electrode material contains Cu as its main ingredient and at least one other element, preferably Ag and/or Ti. It is preferred that the Ag content be 10.0 wt % or less and that the Ti content be 5.0 wt % or less. A stamper-forming thin film is made of this stamper-formi |
| 6695987 |
Production method for optical disc |
February 24, 2004 |
| The present invention is to provide a production method for an optical disc, capable of obtaining a good S/N ratio without deterioration of the stamper quality due to reaction with an electron attractive group contained in a resist material. The processes of forming a resist film on |
| 6657934 |
Information recording apparatus and method therefor |
December 2, 2003 |
| An information recording apparatus and a method therefor which can form a beam guide groove in the shape of highly accurate rectangle having abrupt edges. A recording mark is formed by exposing a recording medium with a recording beam having a beam diameter smaller than the beam guide gr |
| 6344275 |
Electrode material for forming stamper and thin film for forming stamper |
February 5, 2002 |
| To present a material for stamper free from deterioration of stamper quality due to reaction with an electron-attracting radical contained in the resist material. An electrode formed on the surface of a patterned resist film 2 for electrocasting a stamper material is formed of a nickel |
| 5446722 |
Information recording apparatus having magnetic shield means |
August 29, 1995 |
| An information recording apparatus including a device for driving an optical-disk's master disk, an electron lens barrel for having an electron beam irradiate a recording surface of a disk, a translational device for producing, between the disk and the electron lens barrel, a relative |
