OPTICAL RECORDING MEDIUM - 株式会社リコー

Title:

OPTICAL RECORDING MEDIUM

Document Type and Number:

Japanese Patent JP3292904

Kind Code:

B2

Abstract:

PURPOSE: To obtain an optical recording medium having a high refractive index by forming a light absorbing layer consisting of a metallophthalocyanine compd. and a compd. having a group contg. P atom capable of coordinating with the metallophthalocyanine compd.
CONSTITUTION: This optical recording medium has a substrate and a light absorbing layer formed on the substrate. The light absorbing layer consists essentially of a metallophthalocyanine compd. (A) and a compd. (B) having a group contg. P atom capable of coordinating with the compd. A. The compd. B is a compd. having a group represented by formula I or a compd. represented by formula II [where A is optionally substd. aryl and (n) is an integer of 2-6]. The number of electrons in the d-orbit of the central metal ion of the compd. A is 0, 1, 2, 3, 4, 5, 6, 7 or 10 and the ion is Fe2+, Co2+ or Zn2+.

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Inventors:

Tsutomu Sato
Tatsuya Tomura
Noboru Sasa

Application Number:

JP27706894A

Publication Date:

June 17, 2002

Filing Date:

October 17, 1994

Export Citation:

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Assignee:

株式会社リコー

International Classes:

B41M5/26; G03C1/73; G11B7/24; G11B7/244; (IPC1-7): G11B7/24; B41M5/26

Domestic Patent References:

JP5266512A
JP6223374A

Attorney, Agent or Firm:

Toshiaki Ikeura (1 outside)

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