US5846647A
Expired / Lapsed
US
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Recording medium, ink-jet recording method using the same, and dispersion of alumina hydrate
Assignee: Canon Inc
•
Filing: 1997-02-10
•
Granted: 1998-12-08
•
Expires: 2017-02-10
Abstract
Abstract Disclosed herein is a recording medium comprising an alumina hydrate having an average pore radius of 20 to 200 ANGSTROM and a half breadth of pore radius distribution of 20 to 150 ANGSTROM .
Inventors
- 👤 Hitoshi Yoshino
- 👤 Kyo Miura
- 👤 Yuji Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:01
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; B82; B82Y; B82Y30/00; C; C01; C01F; C01F7/00; C01F7/02; C01F7/021; C01F7/026; C09; C09D; C09D17/00; C09D17/004; C01P; C01P2002/00; C01P2002/02; C01P2002/70; C01P2002/72; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/04; C01P2004/20; C01P2004/54; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/12; C01P2006/14; C01P2006/16; C01P2006/17; C01P2006/22; C01P2006/80; C01P2006/90; D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/675; D21H21/00; D21H21/50; D21H21/52; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/249921; Y10T428/249953; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
39 words
A recording medium comprising a substrate and an ink-receiving layer containing alumina hydrate particles and a binder provided on the substrate, wherein the alumina hydrate contains 0.01 to 1.00% by weight of titanium dioxide within the alumina hydrate particles.
Claim 2
Dependent Claim
39 words
A recording medium comprising a substrate and an ink-receiving layer containing alumina hydrate particles and a binder provided on the substrate, wherein the alumina hydrate contains 0.01 to 1.00% by weight of titanium dioxide within the alumina hydrate particles.
Claim 3
Dependent Claim
34 words
The recording medium according to claim 1, wherein the alumina hydrate has an average pore radius of 20 to 200 Å and a half breadth of pore radius distribution of 20 to 150 Å.
Claim 4
Dependent Claim
34 words
The recording medium according to claim 1, wherein the ink-receiving layer has an average pore radius of 20 to 200 Å and a half breadth of pore radius distribution of 20 to 150 Å.
Claim 5
Dependent Claim
20 words
The recording medium according to claim 1, wherein the alumina hydrate has at least two peaks in pore radius distribution.
Claim 6
Dependent Claim
39 words
The recording medium according to claim 4, wherein the peaks in pore radius distribution of the alumina hydrate are located at a pore radius of smaller than 100 Å and within a range of from 100 to 200 Å.
Claim 7
Dependent Claim
45 words
The recording medium according to claim 5, wherein the pore volume of pores having the peak at a pore radius smaller than 100 Å in the alumina hydrate is within a range of from 0.1 to 10% by volume based on the total pore volume.
Claim 8
Dependent Claim
32 words
The recording medium according to claim 5, wherein said peak located at a pore radius of smaller than 100 Å is located at a pore radius of from 10 to 60 Å.
Claim 9
Dependent Claim
20 words
The recording medium according to claim 1, wherein the ink-receiving layer has at least two peaks in pore radius distribution.
Claim 10
Dependent Claim
39 words
The recording medium according to claim 8, wherein the peaks in pore radius distribution of the ink-receiving layer are located at a pore radius of smaller than 100 Å and within a range of from 100 to 200 Å.
Claim 11
Dependent Claim
46 words
The recording medium according to claim 9, wherein the pore volume of pores having the peak at a pore radius of smaller than 100 Å in the ink-receiving layer is within a range of from 0.1 to 10% by volume based on the total pore volume.
Claim 12
Dependent Claim
32 words
The recording medium according to claim 9, wherein said peak located at a pore radius of smaller than 100 Å is located at a pore radius of from 10 to 60 Å.
Claim 13
Dependent Claim
25 words
The recording medium according to claim 1, wherein the pore volume of the alumina hydrate is within a range of from 0.4 to 0.6 cc/g.
Claim 14
Dependent Claim
25 words
The recording medium according to claim 1, wherein the pore volume of the ink-receiving layer is within a range of from 0.4 to 0.6 cc/g.
Claim 15
Dependent Claim
23 words
The recording medium according to claim 1, wherein the total pore volume of the ink-receiving layer is at least 8 cc/m 2 .
Claim 16
Dependent Claim
46 words
The recording medium according to claims 1, wherein a relative pressure difference (ΔP) between adsorption and desorption at 90 percent of the maximum amount of adsorbed gas as found from an isothermal nitrogen adsorption and desorption curve for the alumina hydrate is not larger than 0.2.
Claim 17
Dependent Claim
46 words
The recording medium according to claim 1, wherein a relative pressure difference (ΔP) between absorption and desorption at 90 percent of the maximum amount of adsorbed gas as found from an isothermal nitrogen adsorption and desorption curve for the ink-receiving layer is not larger than 0.2.
Claim 18
Dependent Claim
13 words
The recording medium according to claim 1, wherein the alumina hydrate is non-crystalline.
Claim 19
Dependent Claim
28 words
The recording medium according to claim 1, wherein the alumina hydrate is in the form of a flat plate having an average aspect ratio of 3 to 10.
Claim 20
Dependent Claim
24 words
The recording medium according to claim 1, wherein the alumina hydrate has a BET specific surface area of 70 to 300 m 2 /g.
Claim 21
Dependent Claim
20 words
The recording medium according to claim 1, wherein the alumina hydrate has an average slenderness ratio of 0.6 to 1.0.
Claim 22
Dependent Claim
23 words
The recording medium according to claim 1, wherein the number of hydroxyl groups in the alumina hydrate is at least 10 20 groups/g.
Claim 23
Dependent Claim
22 words
The recording medium according to claim 1, wherein the alumina hydrate has a zeta-potential of at least 15 mV at pH 6.
Claim 24
Dependent Claim
20 words
The recording medium according to claims 1, wherein the alumina hydrate contains 0.13 to 1.00% by weight of titanium dioxide.
Claim 25
Dependent Claim
46 words
The recording medium according to claim 1, wherein the alumina hydrate is represented by the following formula: Al.sub.2 O.sub.3-n (OH).sub.2n.mH.sub.2 O wherein n is an integer of 0 to 3, m is a number of 0 to 10, and n and m are not both zero.
Claim 26
Dependent Claim
14 words
The recording medium according to claim 1, wherein the binder comprises a water-soluble polymer.
Claim 27
Dependent Claim
28 words
The recording medium according to claim 1, wherein the mixing weight ratio of the alumina hydrate to the binder is in the range of from 1:1 to 30:1.
Claim 28
Dependent Claim
28 words
The recording medium according to claim 26, wherein the mixing weight ratio of the alumina hydrate to the binder is in the range of from 5:1 to 25:1.
Claim 29
Dependent Claim
30 words
The recording medium according to claim 1, wherein the coating weight of the ink-receiving layer is in the range of from 0.5 to 60 g/m 2 in a dry state.
Claim 30
Dependent Claim
30 words
The recording medium according to claim 28, wherein the coating weight of the ink-receiving layer is in the range of from 5 to 45 g/m 2 in a dry state.
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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) | 2001-12-07 | 2002-06-08 | 2002-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-07 | 2006-06-08 | 2006-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-07 | 2010-06-08 | 2010-12-08 | $7700.00 | Window Closed / Lapsed |