Patent US2141975A successfully refreshed from Google Patents.
US4554181A
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US
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Ink jet recording sheet having a bicomponent cationic recording surface
Assignee: WestRock MWV LLC
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Filing: 1984-05-07
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Granted: 1985-11-19
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Expires: 2004-05-07
Abstract
Abstract An ink jet recording sheet having a recording surface which includes a combination of a water soluble polyvalent metal salt and a cationic polymer, said polymer having cationic groups which are available in the recording surface for insolubilizing an anionic dye.
Inventors
- 👤 Michael J. Cousin
- 👤 Larry O. Hill
- 👤 Rhonda G. Justice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:47
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/26; B41M5/00; B41M5/50; B41M5/52; D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/62; D21H19/64; B41M5/502; B41M5/508; B41M5/5218; B41M5/5245; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
87 words
A recording sheet useful in ink jet recording comprising a substrate having a recording surface containing a cationic polymer and a water soluble polyvalent metal salt, said polymer providing said surface with cationic groups for ionically interacting with an anionic dye and insolubilizing it; wherein at least 3 mol % of the monomeric units making up said polymer are derived from cationic monomers and said salt is a salt of a metal from Group II, Group III, or the Transition Metals of the Periodic Table of Elements.
Claim 2
Dependent Claim
87 words
A recording sheet useful in ink jet recording comprising a substrate having a recording surface containing a cationic polymer and a water soluble polyvalent metal salt, said polymer providing said surface with cationic groups for ionically interacting with an anionic dye and insolubilizing it; wherein at least 3 mol % of the monomeric units making up said polymer are derived from cationic monomers and said salt is a salt of a metal from Group II, Group III, or the Transition Metals of the Periodic Table of Elements.
Claim 3
Dependent Claim
13 words
The recording sheet of claim 1 wherein said cationic polymer is water soluble.
Claim 4
Dependent Claim
13 words
The recording sheet of claim 2 wherein said polymer is a cationic polyamine.
Claim 5
Dependent Claim
19 words
The recording sheet of claim 3 wherein said polyamine has a nitrogen content in excess of 1.5% by weight.
Claim 6
Dependent Claim
42 words
The recording sheet of claim 3 wherein said polyvalent metal salt is a salt of a cation selected from the group consisting of Ca 2+ , Ba 2+ , Zn 2+ , Zr 4+ , Al 3+ , and Mg 2+ .
Claim 7
Dependent Claim
21 words
The recording sheet of claim 5 wherein said salt is a salt of an acid having a pKa greater than 2.0.
Claim 8
Dependent Claim
21 words
The recording sheet of claim 5 wherein said salt is a salt of an acid having a pka greater than 3.0.
Claim 9
Dependent Claim
21 words
The recording sheet of claim 7 wherein said salt is an acetate, a formate, a chlorohydrate, a malonate or a succinate.
Claim 10
Dependent Claim
25 words
The recording sheet of claim 2 wherein at least 10 mol % of the polymeric units forming said cationic polymer are derived from cationic monomers.
Claim 11
Dependent Claim
12 words
The recording sheet of claim 9, wherein said salt is calcium formate.
Claim 12
Dependent Claim
15 words
The recording sheet of claim 10, wherein said cationic polymer is a guanidine formaldehyde polymer.
Claim 13
Dependent Claim
34 words
The recording sheet of claim 1 wherein said salt is present in said surface in an amount of approximately 25 to 200 parts by weight per 100 parts by weight of said cationic polymer.
Claim 14
Dependent Claim
30 words
The recording sheet of claim 1 wherein said salt and said cationic polymer are present in said surface in a combined amount of approximately 0.1 to 15 g/m 2 .
Claim 15
Dependent Claim
22 words
The recording sheet of claim 1 wherein said substrate is selected from the group consisting of paper, synthetic paper, and plastic film.
Claim 16
Dependent Claim
11 words
The recording sheet of claim 1 wherein said substrate is paper.
Claim 17
Dependent Claim
29 words
The recording sheet of claim 15 wherein said recording surface is formed by contacting a formed sheet of paper with an aqueous solution of said salt and said polymer.
Claim 18
Dependent Claim
18 words
The recording sheet of claim 16 wherein said solution is applied to said paper in a size press.
Claim 19
Dependent Claim
20 words
The recording sheet of claim 15 wherein said recording surface comprises a coating which overlies the surface of said paper.
Claim 20
Dependent Claim
18 words
The recording sheet of claim 18 wherein said coating additionally includes a water penetratable or water swellable binder.
Claim 21
Dependent Claim
14 words
The recording sheet of claim 19 wherein said coating additionally includes a white filler.
Claim 22
Dependent Claim
13 words
The recording sheet of claim 15 wherein said substrate is low size paper.
Claim 23
Dependent Claim
24 words
The recording sheet of claim 1 wherein said surface additionally includes a surfactant which enhances the wetting of said surface by an aqueous ink.
Claim 24
Dependent Claim
15 words
The recording sheet of claim 1 wherein said surface additionally includes a high absorbancy pigment.
Claim 25
Dependent Claim
13 words
The recording sheet of claim 1 wherein said salt is a zirconium salt.
Claim 26
Dependent Claim
112 words
In a method for ink jet recording which comprises jetting a stream of ink droplets onto the surface of a substrate, the improvement which comprises said substrate having on at least one of the major surfaces thereof a recording surface including a water soluble polyvalent metal salt and a cationic polymer, said polymer providing said surface with cationic groups for ionically interacting with an anionic dye and insolubilizing it; wherein at least 3 mol % of the monomeric units making up said polymer are derived from cationic monomers and said salt is a salt of a metal from Group II, Group III, or the Transition Metals of the Periodic Table of Elements.
Claim 27
Dependent Claim
112 words
In a method for ink jet recording which comprises jetting a stream of ink droplets onto the surface of a substrate, the improvement which comprises said substrate having on at least one of the major surfaces thereof a recording surface including a water soluble polyvalent metal salt and a cationic polymer, said polymer providing said surface with cationic groups for ionically interacting with an anionic dye and insolubilizing it; wherein at least 3 mol % of the monomeric units making up said polymer are derived from cationic monomers and said salt is a salt of a metal from Group II, Group III, or the Transition Metals of the Periodic Table of Elements.
Claim 28
Dependent Claim
12 words
The method of claim 25 wherein said cationic polymer is water soluble.
Claim 29
Dependent Claim
13 words
The method of claim 26 wherein said cationic polymer is a cationic polyamine.
Claim 30
Dependent Claim
40 words
The method of claim 27 said polyvalent metal salt is a salt of a cation selected from the group consisting of Ca 2+ , Ba 2+ , Zn 2+ , Al 3+ , Zr 4+ , and Mg 2+ .
Claim 31
Dependent Claim
20 words
The method of claim 28 wherein said salt is a salt of an acid having a pKa greater than 2.0.
Claim 32
Dependent Claim
20 words
The method of claim 29 wherein said salt is an acetate, a formate, a chlorohydrate, a malonate or a succinate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |