Printing material comprising a combustible material suitable for creating pits on irradiation with a laser beam

• US 5,324,617 A
• Filed: 06/25/1992
• Issued: 06/28/1994
• Est. Priority Date: 06/28/1991
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Benno, Hiroshi, Majima, Osamu
• Primary Examiner(s): Schilling, Richard L.
• Assistant Examiner(s): McPherson, John A.
• Application Number:
  US07/903,757
• Time in Patent Office: 733 Days
• Field of Search: 430/945, 430/138, 430/300, 430/307, 430/495, 430/964, 430/911
• US Class Current: 430/138
• CPC Class Codes: B41N 1/12 non-metallic other than stone , e.g. printing plates or foils comprising inorganic materials in an organic matrix B41N1/003, B41N1/006 take precedence
• CPC Class Codes: Y10S 430/146 Laser beam
• CPC Class Codes: Y10S 430/165 Thermal imaging composition

Abstract

A printing material comprises a shaped structure made of a combustible material and an oxidizing agent, or a self-combustible material having an oxidizing agent contained therein, or a mixture of a self-combustible material and a combustible material. The printing material is formed with pits by application of a laser beam with small output power. The printing material may further comprise a light absorber in order to promote absorption of the laser beam in the printing material.

Claims

1. A printing material, comprising a shaped structure which is made of a dispersion of a self-combustible material in a combustible material, wherein the self-combustible material is in the form of microcapsules encapsulated with a resin film, said self-combustible material consisting essentially of a film-forming nitro compound.

2. A printing material according to claim 1, wherein said shaped structure is in the form of a sheet.

3. A printing material according to claim 1, further comprising a sheet-shaped substrate on which the shaped structure is formed as a thin film.

4. A printing material according to claim 3, further comprising a light absorber in the thin film.

5. A printing material according to claim 1, further comprising a light absorber in the shaped structure.