Patent US5635291A successfully refreshed from Google Patents.
US5635291A
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US
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Ink-jet recording medium
Assignee: Canon Inc
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Filing: 1994-04-25
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Granted: 1997-06-03
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Expires: 2014-04-25
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
2026-10-29 12:42
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: 18
Claim 1
Independent Claim
59 words
A recording medium comprising a base material and an ink-receiving layer which comprises a pigment and a binder and is provided on the base material, wherein the pigment is an alumina hydrate and 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 2
Dependent Claim
59 words
A recording medium comprising a base material and an ink-receiving layer which comprises a pigment and a binder and is provided on the base material, wherein the pigment is an alumina hydrate and 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 3
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 4
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 5
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 6
Dependent Claim
46 words
The recording medium according to claim 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 7
Dependent Claim
46 words
The recording medium according to claim 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 ink-receiving layer is not larger than 0.2.
Claim 8
Dependent Claim
13 words
The recording medium according to claim 1, wherein the alumina hydrate is non-crystalline.
Claim 9
Dependent Claim
28 words
The recording medium according to claim 7, wherein the alumina hydrate is in the form of a flat plate having an average aspect ratio of 3 to 10.
Claim 10
Dependent Claim
24 words
The recording medium according to claim 8, wherein the alumina hydrate has a BET specific surface area of 70 to 300 m 2 /g.
Claim 11
Dependent Claim
20 words
The recording medium according to claim 8, wherein the alumina hydrate has an average slenderness ratio of 0.6 to 1.0.
Claim 12
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 13
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 14
Dependent Claim
25 words
The recording medium according to claim 1, wherein the half breadth of pore radius distribution is in the range of from 80 to 150 Å.
Claim 15
Dependent Claim
14 words
The recording medium according to claim 1, wherein the binder comprises a water-soluble polymer.
Claim 16
Dependent Claim
64 words
The recording medium according to claim 14, wherein the water-soluble polymer is a material selected from the group consisting of polyvinyl alcohol, cationically-modified polyvinyl alcohol, anionically-modified polyvinyl alcohol, silanol-modified polyvinyl alcohol, starch, oxidized starch, etherified starch, casein, gum arabic, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, styrene-butadiene rubber, methylmethacrylate-butadiene copolymer, ethylene-vinyl acetate copolymer, polyvinyl pyrrolidone, maleic anhydride polymer or copolymers thereof, and acrylic ester copolymer.
Claim 17
Dependent Claim
28 words
The recording medium according to claim 1, wherein a mixing weight ratio of the alumina hydrate to the binder is in the range of from 1/1 to 30/1.
Claim 18
Dependent Claim
28 words
The recording medium according to claim 16, wherein a mixing weight ratio of the alumina hydrate to the binder is in the range of from 5/1 to 25/1.
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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) | 2000-06-02 | 2000-12-02 | 2001-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-02 | 2004-12-02 | 2005-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-02 | 2008-12-02 | 2009-06-03 | $7700.00 | Window Closed / Lapsed |