Patent ID: 8039419
Filing Date: 2011-10-18
Classification: B41M

Abstract:
1. A heat sensitive recording material comprising a heat sensitive recording layer provided on a support, wherein the heat sensitive recording layer comprises a hollow particle and a heat sensitive coloring component comprising a combination of electron-donating dye precursor fine particles having a volume-average particle diameter of 0.5 μm to 2.0 μm and electron-accepting compound fine particles having a volume-average particle diameter of 0.5 μm to 2.0 μm and reacting with the electron-donating dye precursor upon application of heat energy to thereby develop color, wherein the electron-accepting compound comprises an electron-accepting compound represented by formula (I) below and an electron-accepting compound selected from salicylic acid derivatives and polyvalent metal salts thereof, wherein R wherein Y and Z independently represent a hydrogen atom or an alkyl group, and Y and Z may be bound to each other to form a ring.