| 摘要 |
PURPOSE:To remarkably enhance printing property, by conducting a supercalendering treatment in production process of a heat-sensitive paper in the condition wherein the water content of a sheet applied with a heat-sensitive coating liquid is maintained in a specified range. CONSTITUTION:In the process of producing a heat-sensitive recording paper by using a normally colorless or light-colored dye precursor and a color developer capable of developing the color of the dye precursor by reacting therewith when being heated, the supercalendering treatment is conducted in the condition wherein the water content of the sheet applied with the heat-sensitive coating liquid is maintained in the range of 7.0-12.0%. The water content may be adjusted to 7-12% by a method wherein drying in a dring process following to applying the heat-sensitive coating liquid is weakened, or a method wherein the moisture of a paper is conditioned by a moisture-conditioning machine before passing the paper through a supercalender, or a combination of the two methods. |
