US5165973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet recording sheet
Assignee: Nippon Paper Industries Co Ltd
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Filing: 1990-01-17
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Granted: 1992-11-24
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Expires: 2010-01-17
Abstract
Abstract An ink jet recording sheet providing an image by the use of an aqueous ink containing a water-soluble dye comprises a substrate having thereon a specific ink receptive layer. This ink jet recording sheet has excellent properties under maintaining the paper-like figure and feeling of an uncoated sheet.
Inventors
- 👤 Yutaka Kojima
- 👤 Takashi Omori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:49
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/68; B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; B41M5/5245; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/44; D21H17/45; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/27; Y10T428/273
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
54 words
An ink-jet recording sheet for providing an image by the use of an aqueous ink containing a water-soluble dye, which comprises an ink-receptive layer of a coating material comprising both an ultra-fine anhydrous silica and a cationic polymer, coated on an ink-absorptive substrate in an amount of no more than 10 g/m 2 .
Claim 2
Dependent Claim
54 words
An ink-jet recording sheet for providing an image by the use of an aqueous ink containing a water-soluble dye, which comprises an ink-receptive layer of a coating material comprising both an ultra-fine anhydrous silica and a cationic polymer, coated on an ink-absorptive substrate in an amount of no more than 10 g/m 2 .
Claim 3
Dependent Claim
44 words
The ink jet recording sheet according to claim 1, wherein said ultra-fine anhydrous silica has a high SiO 2 content and no internal surface, and is in the form of an aggregate of spherical particles having a mean primary particle size of 7-40 mμ.
Claim 4
Dependent Claim
63 words
The ink jet recording sheet according to claim 1, wherein said cationic polymer is at least one polymer selected from the group consisting of polyethylene imine, polydimethyldiallyl ammonium chloride, polyalkylene-polyamine dicyandiamide ammonium condensate, polyvinylpyridinium polymers of (meth) acryloyl oxyalky quaternary ammonium salt, polymers of (meth)acrylamide alkyl quaternary ammonium salts, ω-chloro-poly (oxyethylene-polymethylene-alkyl quaternary ammonium salts), methyl glycol chitosan and polyvinyl benzyl trimethyl ammonium salt.
Claim 5
Dependent Claim
41 words
The ink jet recording sheet according to claim 1, wherein said cationic polymer is polydimethyl-diallyl ammonium chloride, a polymer of (meth)acryloyl oxyalkyl quaternary ammonium salt, a polymer of (meth)acrylamide alkyl quaternary ammonium salt, ω-chloro-poly (oxyethylene-polymethylene-alkyl quaternary ammonium salt) or methylglycol chitosan.
Claim 6
Dependent Claim
30 words
The ink jet recording sheet according to claim 1, wherein said cationic polymer is used in an amount of 0.2-20 weight-parts, based on 100 weight-parts of said ultra-fine anhydrous silica.
Claim 7
Dependent Claim
25 words
The ink jet recording sheet according to claim 1, wherein said ink receptive layer comprises further a binder having little reactivity with said cationic polymer.
References Cited (Backward Citations)
JPS57107879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |