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1. (WO2013115809) SURFACE TREATMENT COMPOSITION

Pub. No.:    WO/2013/115809    International Application No.:    PCT/US2012/023409
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Wed Feb 01 00:59:59 CET 2012
IPC: B41F 23/00
Applicants: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
ZHOU, Xiaoqi
Inventors: ZHOU, Xiaoqi
Title: SURFACE TREATMENT COMPOSITION
Abstract:
A surface treatment composition includes a solution having a pH within a range of above 4 to 8 that includes metal cations produced in situ from a metal-containing substance having a Ksp no greater than 1x10-6 in a reaction with an acid having a pKa in a range of -3.0 to +3.5. The composition further includes an agent mixed with the solution that is either a surface sizing agent or a coating agent used on a paper substrate. A print media includes the composition applied to a paper substrate. Preparation of the composition includes reacting the metal-containing substance with the acid, adjusting the pH to above 4 to 8, and mixing the metal cation-containing solution with either the surface sizing or coating agents.