An ink jet-recording sheet for forming recorded images using liquid ink
comprises a combination of specific compounds, for instance,
1,2-bis(2-hydroxyethylthio)ethane and a homopolymers or copolymer of
diallylamine type compounds such as poly(diallylamine)hydrochloride,
poly(diallylamine)sulfate, poly(diallylamine) phosphate or
poly(diallylamine)acetate. The ink jet-recording sheet can ensure a high
density of printed images, can provide images having high quality, shows
only a slight color change and discoloration of printed images even when
exposed to ozone gas and is excellent in the long-term shelf life.