公开(公告)号：JPH02179791A

公开(公告)日：1990-07-12

申请号：JP33429688

申请日：1988-12-29

Applicant: SONY CORP

Inventor： KISHII NORIYUKI ,  MATSUZAWA NOBUYUKI

IPC: B41M5/26 ,  G11B7/24 ,  G11B7/244

Abstract: PURPOSE:To simplify the constitution of the title recording medium and to enhance economical efficiency and productivity by providing a recording layer containing substituted aminophthalocyanine on a substrate. CONSTITUTION:A recording layer containing substituted aminophthalocyanine is provided on a substrate. The optical data recording medium thus constituted is prepared by dissolving, for example, tetrahexylaminophthalocyanine in chloroform to prepare paint and applying said paint to a polycarbonate substrate while rotating said substrate to form a film and subsequently drying said film to form the recording layer. The optical data recording medium having this recording layer shows capacity extremely suitable as a reproduction exclusive type medium.

公开(公告)号：JPH02179790A

公开(公告)日：1990-07-12

申请号：JP33429588

申请日：1988-12-29

Applicant: SONY CORP

Inventor： ASAI NOBUTOSHI ,  MATSUZAWA NOBUYUKI ,  TAMURA SHINICHIRO ,  KISHII NORIYUKI

IPC: G11B7/24 ,  B41M5/26 ,  G11B7/244

Abstract: PURPOSE:To provide high reflectivity and to enhance recording sensitivity by containing a substance mainly absorbing laser beam and a substance mainly deteriorated and decomposed by heating in a recording layer. CONSTITUTION:In a recording layer, an org. dye material is used as a recording material and two kinds of substances are also used in a mixed state. The first substance (component 1) is one mainly absorbing laser beam and, concretely, there are a cyannine dye, a metal complex dye, a phthalocyanine dye and a naphthalocyanine dye. The second substance (component 2) absorbs almost no laser wavelength and is deteriorated and decomposed with a sudden temp. rise due to laser irradiation to generate gas. As a substance usable in the component 2, a cyanine dye (absorbing no laser wavelength) and a cumarine dye are designated. Herein, the mixing ratio of two kinds of the substances compounded with the recording layer is regulated to easily set reflectivity to 70% or more.

公开(公告)号：JPH02164587A

公开(公告)日：1990-06-25

申请号：JP31843688

申请日：1988-12-19

Applicant: SONY CORP

Inventor： TAMURA SHINICHIRO ,  ARAKAWA SEIICHI ,  KISHII NORIYUKI ,  MATSUZAWA NOBUYUKI

IPC: B41M5/26 ,  G11B7/244 ,  G11B7/26

Abstract: PURPOSE:To form a uniform org. dye layer without imparting damage to a substrate by coating the substrate with paint prepared by dissolving org. dye in a specific solvent to prepare an optical data recording medium provided with the org. dye layer. CONSTITUTION:An org. dye is dissolved in an org. solvent being a 4-6C chain compound having either one of a carbonyl group and a 2-3C ester group in the molecule thereof and having a hydroxyl group at either one of an alpha-position and a beta-position. This org. solvent solution of the org. dye is applied to a substrate composed of polycarbonate and dried to prepare an optical data recording medium having an org. dye layer formed thereto. As a suitable embodiment of the aforementioned org. solvent, there are diacetone alcohol, 4-hydroxy-2- butanone, 2-hydroxy-2-methyl-3-butane or the like.