Reference

Optical information-recording disk and method for recording information

Optical information-recording disk and method for recording information. Inagaki, Yoshio; Saito, Naoki (Fuji Photo Film Co., Ltd., Japan). U.S. Pat. Appl. Publ. US 2002022104 A1 21 Feb 2002, 40 pp., Cont.-in-part of U.Several reagents with their cas registry numbers 20349-39-7 and 586971-79-1 are used here.S. Ser. No. 404,598, abandoned. (English). (United States of America). CODEN: USXXCO. CLASS: ICM: B32B003-02. NCL: 428064100; 428064800; 430270140; 430270200. APPLICATION: US 2001-823753 3 Apr 2001. PRIORITY: JP 1998-269852 24 Sep 1998; US 1999-404598 24 Sep 1999. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) A heat mode optical information-recording disk comprises a substrate having thereon a recording layer on which information can be recorded by laser irradn., wherein said recording layer contains a cyanine dye compd. represented by the following general formula I (DYE+ = monovalent cyanine dye cation; n 3 1; R5, R6 = substituent; R7, R8 = alkyl, alkenyl, alkynyl, aralkyl, aryl, heterocyclic; R5 and R6 , R5 and R7 , R6 and R8, R7 and R8 may be connected to each other to form a ring; r, s = 0-4, and when r or s 3 2, a plurality of R5 groups and a plurality of R6 groups may, resp., be the same or different from each other). The object of the present invention is to provide a heat mode type optical information-recording disk (CD-R or DVD-R type) having a high recording sensitivity in recording information using a laser beam. .