Recording medium and recording method thereof

Abstract

Abstract PURPOSE:To provide a recording medium capable of recording with a high contrast by irradiating with near-infrared rays, by coating a heat-sensitive color producing material and a specified near-infrared ray absorber on a base. CONSTITUTION:A heat-sensitive color producing material (a combination of an organic acid salt of silver and a reducing agent, a combination of a leuco dye and a color developer, etc.) and a near-infrared ray absorber having a maximum absorption wavelength in a near-infrared region of 0.7-3mum are coated on a base. Examples of compounds usable as the near-infrared ray absorber include copper sulfate and a cyanine coloring matter. When near-infrared rays in the wavelength range of 0.7-3mum are selectively irradiated on the recording medium, the heat-sensitive color producing material produces color due to the generation of heat by the near-infrared ray absorber, resulting in performing printing.

Inventors

• 👤 Koji Sato
• 👤 弘次 佐藤
• 👤 Shigeru Oikawa
• 👤 及川　茂
• 👤 Takeshi Sukegawa
• 👤 助川　健
• 👤 Hiroshi Murase
• 👤 村瀬　啓

Bibliographic Details