Method of manufacturing multi-layer optical information recording medium and the apparatus of the same

• Main Authors: OHNO, EIJI, HAYASHI, KAZUHIRO, HISADA, KAZUYA
• Format: Patent
• Language: English
• Published: 01.11.2006
• Edition: 7
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

On a thick substrate having a guide groove or pit and a rewritable recording multi-layer film formed on a surface thereof, when a separation layer is transferred between the substrate and a stamper by the stamper and the guide groove or pit of signal is transferred from the surface thereof, since the spacing between the stamper and the substrate is not constant, the thickness of the separation layer may be uneven. After the kth signal recording layer (100) of the kth signal substrate (103) is made in line with the face provided with the guide groove and pit (105) of the (k-1)th signal recording layer on the (k-1)th stamper (106), and the (k-1)th separation layer (107) is formed under this state, the (k-1)th stamper (106) is peeled. Since the spacing between the surface provided with the guide groove and pit (105) of the (k-1)th signal recording layer and the kth signal recording layer (100) is constant, the thickness of the separation layer (107) can be made even.