Stock material or miscellaneous articles – Circular sheet or circular blank
Reexamination Certificate
2005-03-14
2010-10-19
Mulvaney, Elizabeth (Department: 1785)
Stock material or miscellaneous articles
Circular sheet or circular blank
C428S064400, C428S064800, C430S270140
Reexamination Certificate
active
07815990
ABSTRACT:
The optical recording medium according to the present invention comprises a transparent substrate, a recording layer, an optical reflective layer, and a protective layer, wherein the last three layers mentioned are formed on the substrate in this sequence, and enables recoding at a recording linear velocity of 27.9 m/s or more. The optical reflective layer is characterized in that the layer comprises any one of Ag and an alloy mainly made from Ag and a x-ray diffraction spectrum of the optical reflective layer satisfies the relational expression of 0.2<I (200)/I (111)<0.4, in which I (111) is an intensity of the x-ray diffraction peak from (111) plane and I (200) is an intensity of the x-ray diffraction peak from (200) plane determined by x-ray diffraction based on θ−2θ method when the incidence angle relative to the surface of the optically transparent substrate being θ.
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Dec. 11, 2007 Japanese official action in connection with corresponding Japanese Patent Application No. 2004-272411.
European search report in connection with a counterpart European patent application No. 05 72 1080, Dec. 5, 2008.
Cooper & Dunham LLP
Mulvaney Elizabeth
Ricoh & Company, Ltd.
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