Patent ID: 8546300
Filing Date: 2013-10-01
Classification: B41M

Abstract:
1. A thermo sensitive recording material comprising: a support; an undercoat layer containing at least a water-soluble resin; a thermosensitive coloring layer containing a leuco dye and a developer; and a protective layer containing a water-soluble resin and a fluorescent whitening agent, wherein the undercoat layer, the thermo sensitive coloring layer, and the protective layer are formed in this order over the support, wherein the undercoat layer has a single layer structure or a multilayer structure, and the protective layer has a multilayer structure, wherein the undercoat layer has an air permeance of 150 mL/min or less, and wherein the protective layer contains a first protective layer containing the water-soluble resin and the fluorescent whitening agent and a second protective layer containing a water-soluble resin but no fluorescent whitening agent, and the first protective layer and the second protective layer are formed in this order over the thermosensitive coloring layer.