THERMAL RECORDING METHOD

• Main Author: TOMOTA MITSUHIRO
• Format: Patent
• Language: English
• Published: 23.05.2000
• Edition: 7
• Subjects: COLOUR PRINTING; CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To improve the absorbing efficiency of the light power in a thermally sensitive recording medium by making the oscillation direction of electric field components of a modulated thermally excited laser light the linear polarization in the same direction as the vertical polarization, and an incident angle on a thermally sensitive recording medium surface layer a specific angular range from the Brewster's angle of the surface layer. SOLUTION: An incident thermally excited laser light 11 is linearly polarized so as to make the oscillation direction of the electric field components thereof the same direction as the vertical polarization. Furthermore, the incident angle is set in a range of ±5 deg. from the Brewster's angle determined by the refraction index of a protecting layer 8. According to the configuration, most of the incident thermally excited laser light 11 can be refracted and guided to the inside of the protecting layer 8. In the case where the refraction index of the protecting layer 8 and the refraction index of a thermally sensitive recording layer 9 are same, reflection at the interface of the protecting layer 8 and the thermally sensitive recording layer 9 can be restrained. Therefore, an incident light for the thermal excitation can be absorbed efficiently inside the protecting layer 8 or in the recording layer, the subject of coloring so that coloring and information recording can be effected with a low light power excitation light source.