INKJET RECORDING PAPER SHEET AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a high image quality and a highly glossy inkjet recording paper sheet having high ink absorbency and bleeding tolerance and further a method for efficiently manufacturing the inkjet recording paper sheet with the characteristics in a short period of time.

SOLUTION: In the manufacturing of the inkjet recording paper sheet, the ink accepting layer of which consists of particles, in which polymers reversely made hydrophilic below a boundary temperature and made hydrophobic above the boundary temperature are dispersed, and a vapor-phase method silica having an average particle diameter of 10-200 nm and a lone silanol group ratio of 0.5-4.5 or a porous layer formed by coating a coating liquid including a wet silica having an average particle diameter of 10-200 nm on a support and drying.

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