Method of recording information on an optical information recording medium

• US 20060105270A1
• Filed: 11/18/2005
• Published: 05/18/2006
• Est. Priority Date: 06/28/2001
• Status: Abandoned Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Saito, Naoki
• Application Number:
  US11/281,382
• Publication Number:
  US 20060105270A1
• Time in Patent Office: Days
• US Class Current: 430/270.160
• CPC Class Codes: G11B 7/24 Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the arrangement of information on the carrier G11B7/007
• CPC Class Codes: G11B 7/248 porphines; azaporphines, e.g. phthalocyanines
• CPC Class Codes: Y10S 430/146 Laser beam

Abstract

An optical information recording medium includes a substrate having disposed thereon a recording layer that is recordable by irradiating the recording layer with a laser having a wavelength of 450 nm or less. The recording layer contains a specific phthalocyanine derivative. An optical information recording method uses the medium.

Claims

1. A method of recording information on an optical information recording medium by irradiating the medium with a laser having a wavelength no greater than 450 nm, wherein the medium comprises a substrate having disposed thereon a recording layer on which information is recordable by irradiating the medium with laser light having a wavelength no greater than 450 nm, wherein the recording layer contains a phthalocyanine compound represented by Formula (I):

2. The method of recording optical information on an optical information recording medium of claim 1, wherein M represents a metal selected from the group consisting of zinc, magnesium, copper, nickel, and palladium.

3. The method of recording optical information on an optical information recording medium of claim 1, wherein all of R^β

1 to R<sup>β

8</sup> in the Formula (I) are simultaneously hydrogen atoms.

4. The method of recording information on an optical information recording medium of claim 1, wherein the medium further comprises a reflective layer of metal formed disposed on the recording layer.

further comprises a reflective layer of metal formed disposed on the recording layer.

5. The method of recording information on an optical information recording medium of claim 1, wherein the medium further comprises a protective layer disposed on the recording layer.

6. The method of recording information on an optical information recording medium of claim 1, wherein a pre-groove having a track pitch of 0.2 to 0.5 •

m is formed on the surface of the substrate disposed with the recording layer of the medium.

7. A method of recording information on an optical information recording medium by irradiating the medium with a laser having a wavelength no greater than 450 nm, wherein the medium comprises a substrate having disposed thereon a recording layer on which information is recordable by irradiating the medium with laser light having a wavelength no greater than 450 nm, wherein the recording layer contains a phthalocyanine compound represented by Formula (I):