| 摘要 |
PURPOSE:To remove bleeding and fading of a coloring image by a method wherein a layer containing an oil gelling agent, and a color former layer which contains a micro-capsule containing an electron donative color former are successively laminated on one side surface of a support. CONSTITUTION:An absorption layer 12 containing an oil gelling agent is provided on one side surface of a substrate 11 of wood free paper, a plastic film, etc., and a color former layer 14 which contains a micro-capsule containing a color former is provided thereon to form a pressure sensitive recording sheet 10. As an representative example of the oil gelling agent, there are an amino acid gelling agent being a derivative of amido, ester, amine salt, etc., of N- acylamino acid, 12-hydroxystearic acid being fatty acid of hydrogenated castor oil, etc. The micro-capsule containing the color former can be prepared by emulsifiable dispersion of organic solvent dispersed solution of multivalent isocyanate, multivalent hydroxy compound, and electron donative color former into hydrophilic solution and adding multivalent amine thereinto to coat a hydrophobic solution drop with a polyurethane urea film. |
