EP0767071A1
Expired / Lapsed
EP
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Ink-jet recording sheet
Assignee: New Oji Paper Co Ltd
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Filing: 1996-10-04
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Granted: —
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Expires: 2016-10-04
Abstract
Abstract An ink-jet recording sheet, having an excellent ink absorption and capable of forming images with high color density and sharpness, includes a substrate and an ink-receiving layer, formed on the substrate, which includes a pigment and a self-emulsifying, cationic acrylic copolymer resin having cationic groups.
Inventors
- 👤 Naonubo Sugiyama
- 👤 Yoshitaka Okumura
- 👤 Hiromasa Kondo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 23:47
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; B41M5/5245; B41M5/5254
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
47 words
An ink-jet recording sheet comprising a substrate and an ink-receiving layer formed on at least one surface of the substrate and comprising a pigment and a binder, the binder comprising a self-emulsifying cationic resin consisting essentially of at least one water-insoluble acrylic copolymer having cationic functional group.
Claim 2
Dependent Claim
24 words
The ink-jet recording sheet as claimed in claim 1, wherein the binder contains a water-soluble cationic resin in addition to the self-emulsifying cationic resin.
Claim 3
Dependent Claim
33 words
The ink-jet recording sheet as claimed in claim 1, wherein the self-emulsifying cationic resin is present in a content of 5 to 70% by weight based on the total weight of the binder.
Claim 4
Dependent Claim
74 words
The ink-jet recording sheet as claimed in claim 1, wherein the water-insoluble acrylic copolymer having cationic functional group is a copolymerization product of at least one acrylic monomer selected from the group consisting of alkyl acrylates having 4 to 21 carbon atoms and alkyl methacrylates having 5 to 22 carbon atoms with at least one cationic, ethylenically unsaturated monomer having at least one cationic group selected from tert-amino groups and quaternary ammonium salt groups.
Claim 5
Dependent Claim
57 words
The ink-jet recording sheet as claimed in claim 1, wherein the pigment comprises at least one white pigment selected from the group consisting of amorphous synthetic silica, alumina, hydrated alumina sol, aluminum silicate, magnesium silicate, precipitated calcium carbonate, ground calcium carbonate, calcium silicate, aluminum hydroxide, zeorite, calcined clay, kaolin clay, talc, white carbon and organic (plastic) pigments.
References Cited (Backward Citations)
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