Inkjet-printing materials and coating agents therefor
AssigneeTaiho Industries Co., Ltd.
InventorsKousuke Okura, Toshihiro Kodera, Hidemasa Mouri
Life of this patent
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Abstract
A coating agent for a base for ink-jet printing comprises an alumina dispersion containing dispersed alumina and aluminium nitrate dissolved in an aqueous dispersing medium, and a binder. This coating agent and the coated base material are free of irritating odor, contain alumina well dispersed therein, and provide printed images on the inkjet-printing materials, which images are excellent in the color density, resistance to water, resistance to light and color definition.
Claims18
A coating agent consisting of:
- an alumina dispersion of alumina dispersed and aluminum nitrate dissolved in an aqueous dispersing medium, and a binder,
- wherein said alumina is δ-alumina or pseudboemite,
- wherein said alumina has an average primary particle size of 5 to 100 nm,
- wherein the amount of aluminum nitrate in the alumina dispersion is within the range of 0.1 to 10 parts by weight based on 100 parts by weight of said alumina, and
- wherein said aluminum nitrate is aluminum nitrate nonahydrate, and
- optionally further consisting of at least one of an acid, an alcoholic solvent, a leveling agent, a pH-regulating agent, a viscosity-regulating agent, an antifoaming agent, a defoaming agent, a dispersion-stabilizing agent, a brightening agent and a releasing agent.
An inkjet receptive coating agent capable of being coated onto a substrate to provide a recording medium for inkjet-printing, consisting of
- an alumina dispersion of alumina dispersed and aluminum nitrate dissolved in an aqueous dispersing medium, and a binder,
- wherein said alumina is δ-alumina or pseudboemite,
- wherein said alumina has an average primary particle size of 5 to 100 nm,
- wherein the amount of aluminum nitrate in the alumina dispersion is within the range of 0.1 to 10 parts by weight based on 100 parts by weight of said alumina, and
- wherein said aluminum nitrate is aluminum nitrate nonahydrate, and
- optionally further consisting of at least one of an acid, an alcoholic solvent, a leveling agent, a pH-regulating agent, a viscosity-regulating agent, an antifoaming agent, a defoaming agent, a dispersion-stabilizing agent, a brightening agent and a releasing agent.
An inkjet receptive coating agent capable of being coated onto a substrate to provide a recording medium for inkjet-printing, comprising
- an alumina dispersion containing alumina dispersed and aluminum nitrate dissolved in an aqueous dispersing medium, and a binder,
- wherein said alumina is δ-alumina or pseudboemite,
- wherein said alumina has an average primary particle size of 5 to 100 nm,
- wherein the amount of aluminum nitrate in the alumina dispersion is within the range of 0.1 to 10 parts by weight based on 100 parts by weight of said alumina,
- wherein said aluminum nitrate is aluminum nitrate nonahydrate, and
- wherein said coating agent is free of titania.
Dependencies are inferred from the claim text.