| 摘要 |
PURPOSE:To enable a reaction to be carried out with low energy and to obtain distinct record by preventing superposition of a wavelength region where absorption of light energy in ultraviolet region of a high molecular component increases and a wavelength region where absorption of light energy in ultraviolet region of a coloring component increases. CONSTITUTION:A wavelength region wherein absorption of light energy in an ultraviolet region of a high molecular component increase and a wavelength region wherein absorption of light energy in a ultraviolet region of a coloring component increase, are adjusted so as not to superpose on each other for all elemental body of a recording medium. For this purpose, combinations of coloring material and reaction initiating material are selected from groups of coloring material and reaction initiating material so as to both do not superpose on each other in their wavelength region wherein absorption of light energy in the ultraviolet region increase. For example, 'Diaresin Red H(PRE)(R)' may be combined with 4'-methylthio-2-morholino-2-methyl-propiophenone. By this constitution, a high molecular component is formed effectively without causing absorption of irradiated light energy by a coloring component, thus a distinct record is obtd. |
