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US 6,783,818 B2Granted
Ink-jet recording sheet
AssigneeKonica Corporation
InventorsMasaru Tsuchiya, Kenzo Kasahara
Life of this patent
Estimating the term…
Abstract
An ink-jet recording sheet comprising a support and an ink-absorbable layer is disclosed. The ink-absorbable layer is a void layer containing fine inorganic particles having a dispersion degree of no more than 2 and a hydrophilic binder. The ink-jet recording sheet has a specular gloss specified by JIS Z8741, of at least 20 percent at 60 degrees of the surface of said ink absorbable layer, and exhibits the specular gloss such that 60-degree specular gloss of an ink-recorded part is 3 percent more than that of a nonink-recorded part.
Claims19
An ink-jet recording sheet comprising:
- a support and
- an ink-absorbable layer provided thereon, the ink-absorbable layer comprising a plurality of void layers containing first particles having a dispersion degree of no more than 2 and a hydrophilic binder,
- wherein at least one of the void layers, except for the uppermost void layer to the support, comprises second particles having a refractive index higher than that of the first particles,
- so that the ink-jet recording sheet has a specular gloss of at least 20 percent at 60 degrees of the surface of the ink-absorbable layer, and the ink-net recording sheet exhibits the specular gloss such that 60-degree specular gloss of an ink-recorded part is 3 percent not less than that of a nonink-recorded part, and
- wherein the first particles are silica having an average particle diameter of not more than 100 nm.
2 more elements
An ink-jet recording sheet comprising:
- a support and
- an ink-absorbable layer provided thereon, the ink-absorbable layer comprising a plurality of void layers containing first particles having a dispersion degree of no more than 2 and a hydrophilic binder, the first particles being present in an amount of 3 to 50 g per 1 m2 of the sheet
- wherein at least one of the void layers, except for the uppermost void layer to the support, comprises second particles having a refractive index higher than that of the first particles,
- so that the ink-jet recording sheet has a specular gloss of at least 20 percent at 60 degrees of the surface of the ink-absorbable layer, and the ink-jet recording sheet exhibits the specular gloss such that 60-degree specular gloss of an ink-recorded part is 3 percent not less than that of a nonink-recorded part, and wherein the first particles are silica having an average particle diameter of not more than 100 nm.
1 more element
An ink-jet recording sheet comprising:
- a support and
- an ink-absorbable layer provided thereon, the ink-absorbable layer comprising a plurality of void layers containing first particles having a dispersion degree of no more than 2 and a hydrophilic binder, said hydrophilic binder being polyvinyl alcohol in an amount of 0.5 to 10g per 1 m2 of the sheet
- wherein at least one of the void layers, except for the uppermost void layer to the support, comprises second particles having a refractive index higher than that of the first particles,
- so that the ink-jet recording sheet has a specular gloss of at least 20 percent at 60 degrees of the surface of the ink-absorbable layer, and the ink-jet recording sheet exhibits the specular gloss such that 60-degree specular gloss of an ink-recorded part is 3 percent not less than that of a nonink-recorded part, and wherein the first particles are silica having an average particle diameter of not more than 100 nm.
1 more element
An ink-jet recording sheet comprising:
- a support and
- an ink-absorbable layer provided thereon, the ink-absorbable layer comprising a plurality of void layers containing first particles having a dispersion degree of no more than 2 and a hydrophilic bander,
- wherein at least one of the void layers, except for the uppermost void layer to the support, comprises second particles having an average particle diameter of 0.1 μm to 1.0 μm, and a refractive index higher than that of the first particles,
- so that the ink-jet recording sheet has a specular gloss of at least 20 percent at 60 degrees of the surface of the ink-absorbable layer, and the ink-jet recording sheet exhibits the specular gloss such that 60-degree specular gloss of an ink-recorded part is 3 percent not less than that of a nonink-recorded part, and wherein the first particles are silica having an average particle diameter of not more than 100 nm.
1 more element
An ink-jet recording sheet comprising:
- a support and
- an ink-absorbable layer provided thereon, the ink-absorbable layer comprising a plurality of void layers containing first particles having a dispersion degree of no more than 2 and a hydrophilic binder.
- wherein at least one of the void layers, except for the uppermost void layer to the support, comprises second particles having a refractive index higher than that of the first particles,
- so that the ink-jet recording sheet has a specular gloss of at lesat 20 percent at 60 degrees of the surface of the ink-absorbable layer, and the ink-jet recording sheet exhibits the specular gloss such that 60-degree specular gloss of an ink-recorded part is 3 percent not less than that of a nonink-recorded part and wherein the second particles is 1 to 20 weight percent with respect to the first particles contained in the void layer comprising the second particles, and wherein the first particles are silica having an average particle diameter of not more than 100 nm.
1 more element
Dependencies are inferred from the claim text.