Laser beam writing material, material for forming the same,...

Details Laser beam writing material, material for forming the same,... Laser beam writing material, material for forming the same,...

2005-08-30

2005-08-30

Juska, Cheryl A. (Department: 1771)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S543000, C428S913300

Reexamination Certificate

active

06936358

ABSTRACT:
A laser beam writing material having: silicon dioxide; and a titanium-containing compound fixed with the silicon dioxide and capable of being changed in color by irradiation with a laser beam; wherein when a color-changed portion in the laser beam writing material is formed by irradiation with the laser beam and exposed to the air at 600° C. for 30 minutes, contrast between the color-changed portion and a color-unchanged portion in the laser beam writing material is not lower than 0.60; a material for forming the laser beam writing material, having a mixture at least including the titanium-containing compound and an MQ resin; and a display body having a color-changed portion formed by irradiation with the laser beam in the laser beam writing material.

REFERENCES:
patent: 5780142 (1998-07-01), Kume et al.
patent: 5855969 (1999-01-01), Robertson
patent: 6416845 (2002-07-01), Kume et al.
patent: 2000226248 (2000-08-01), None

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