Optical recording medium

Details Optical recording medium Optical recording medium

2005-03-22

2005-03-22

Dye, Rena (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064200, C428S064400, C428S064900, C430S270110, C430S495100, C430S945000, C369S283000, C369S288000

Reexamination Certificate

active

06869655

ABSTRACT:
An optical recording medium in which deposition of impurities or damage to a surface of the medium illuminated by the light for signal recording and/or reproduction is to be prevented from occurring. An amine salt compound of perfluoropolyether having terminal carboxylic groups, represented by the chemical formulas (1) and/or (2):in-line-formulae description="In-line Formulae" end="lead"?Rf—COO−N+HR1R2R3  (formula 1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?R1R2R3N+H−CO—Rf—COO−N+HR1R2R3  (formula 2)in-line-formulae description="In-line Formulae" end="tail"?where Rfdenotes a perfluoropolyether group and R1, R2and R3denote hydrogen or a hydrocarbon group, is held on the surface side illuminated by light.

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