Patent ID: 7297449
Filing Date: 2007-11-20
Classification: G03H,G11B

Abstract:
1. An optical recording medium comprising a recording layer consisting of a matrix polymer; a charge-generating material capable of generating an electron and a hole by light irradiation; a charge-transport material enabling at least said hole to be transported to isolate said electron and said hole; and a trapping material retaining said hole, the optical characteristics of said recording layer being changed in accordance with changes in spatial distribution of said hole and said electron, and said trapping material being a molecule represented by the following general formula (A): wherein CB1 is a conjugated system; and R and wherein and the other of R wherein R 1 and R 2 may be the same with or different from each other and are individually hydrogen atom, alkyl group, alkoxy group, phenyl group, naphthyl group, tolyl group, benzyl group, benzothiazole group, benzoxazolyl group, benzopyrrol group, benzoimidazolyl group, naphthothiazolyl group, naphthoxazolyl group, naphthopyrrol group, naphthoimidazolyl group or hydroxyl group; at least one of R 1 and R 2 being hydrogen atom, or a group to be bonded, through oxygen atom or saturated carbon atom, to nitrogen atom.