发明授权
- 专利标题: Optical information recording element
- 专利标题(中): 光信息记录元件
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申请号: US217125申请日: 1988-07-07
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公开(公告)号: US4891305A公开(公告)日: 1990-01-02
- 发明人: Hideaki Oba , Tsutomu Sato , Masaakira Umehara , Yutaka Ueda , Tetsu Yamamuro , Michiharu Abe
- 申请人: Hideaki Oba , Tsutomu Sato , Masaakira Umehara , Yutaka Ueda , Tetsu Yamamuro , Michiharu Abe
- 申请人地址: JPX Tokyo
- 专利权人: Ricoh Co., Ltd.
- 当前专利权人: Ricoh Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX59-221254 19841023; JPX59-223849 19841026
- 主分类号: G11B7/246
- IPC分类号: G11B7/246 ; G11B7/2463 ; G11B7/247 ; G11B7/2472 ; G11B7/2475 ; G11B7/249 ; G11B7/2495 ; G11B7/253 ; G11B7/2531 ; G11B7/2532 ; G11B7/2533 ; G11B7/2534 ; G11B7/257 ; G11B7/2575 ; G11B7/2578
摘要:
This invention relate to an optical information recording medium, characterized by having an organic thin film recording layer containing at least one of compounds expressed by the general formula (I), (II), (III) and (IV): ##STR1## (wherein in the above formulas, A, B, D and E represent a substituted or non-substituted aryl group; R.sub.1 to R.sub.8 may be the same or different and represent hydrogen atom, halogen atom or alkyl group; Y represents a divalent residue having atomic groups necessary for forming a five-membered ring or six-membered ring; m, n and l represents 0, 1 or 2; ans X.sup.- represents an acid anion); ##STR2## (wherein in the above formulas, A' represents a heterocyclic ring selected from the group of thiazole, oxazole, pyrrole, 3,3-dialkyl indolenine, imidazole, pyridine and quinoline and said heterocyclic ring may be condensed with a benzen ring or naphthalene ring, the aromatic ring of which may have a substituent; D' and E' may be the same or different and represent a substituted or non-substituted aromatic ring or D' and E' may get together to form an aromatic ring or heterocyclic ring; X represents an anion; l represents 0, 1 or 2 and m and n represnt 0, 1, 2 or 3; R.sub.9 represents hydrogen, alkyl group, amino group or halogen atom; and Y represents atomic groups necessary for forming a substituted or non-substituted five-membered ring or six-membered ring).
公开/授权文献
- US1613028A Gasoline-reserve control 公开/授权日:1927-01-04