Patent US5965252A successfully refreshed from Google Patents.
US5965252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing medium
Assignee: Canon Inc
•
Filing: 1996-04-30
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Granted: 1999-10-12
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Expires: 2016-04-30
Abstract
Abstract Disclosed herein is a printing medium comprising a substrate and an ink-receiving layer which comprises an alumina hydrate surface-treated with a coupling agent and is provided on the substrate.
Inventors
- 👤 Tsuyoshi Santo
- 👤 Hiroyuki Sugata
- 👤 Yuji Kondo
- 👤 Hiroshi Tomioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:20
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; B41M5/5227
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
32 words
A printing medium comprising a substrate and an ink-receiving layer which comprises an alumina hydrate the surface of which is made hydrophobic using a coupling agent and is provided on the substrate.
Claim 2
Dependent Claim
32 words
A printing medium comprising a substrate and an ink-receiving layer which comprises an alumina hydrate the surface of which is made hydrophobic using a coupling agent and is provided on the substrate.
Claim 3
Dependent Claim
25 words
The printing medium according to claim 1, wherein the coupling agent is selected from the group consisting of silane, titanate, aluminum and zirconium coupling agents.
Claim 4
Dependent Claim
35 words
The printing medium according to claim 1, wherein the proportion of the area covered with the coupling agent by the surface treatment to the surface area of the alumina hydrate amounts to 0.1 to 30%.
Claim 5
Dependent Claim
35 words
The printing medium according to claim 1, wherein the proportion of the area covered with the coupling agent by the surface treatment to the surface area of the alumina hydrate amounts to 0.5 to 20%.
Claim 6
Dependent Claim
35 words
The printing medium according to claim 1, wherein a proportion of an area covered with the coupling agent by the surface treatment to the surface area of the alumina hydrate amounts to 0.7 to 15%.
Claim 7
Dependent Claim
23 words
The printing medium according to claim 1, wherein the alumina hydrate has a pore volume within a range of 0.1 to 1.0 ml/g.
Claim 8
Dependent Claim
28 words
The printing medium according to claim 1, wherein the alumina hydrate has a BET specific surface area within a range of from 40 to 500 m 2 /g.
Claim 9
Dependent Claim
24 words
The printing medium according to claim 1, wherein the ink-receiving layer has a pore volume within a range of from 0.1 to 1.0 ml/g.
Claim 10
Dependent Claim
28 words
The printing medium according to claim 1, wherein the ink-receiving layer has a BET specific surface area within a range of from 40 to 500 m 2 /g.
Claim 11
Dependent Claim
14 words
The printing medium according to claim 1, wherein the ink-receiving layer contains a binder.
Claim 12
Dependent Claim
29 words
The printing medium according to claim 10, wherein the mixing ratio by weight of the alumina hydrate to the binder falls within a range of from 1:1 to 30:1.
Claim 13
Dependent Claim
29 words
The printing medium according to claim 11, wherein the mixing ratio by weight of the alumina hydrate to the binder falls within a range of from 5:1 to 20:1.
Claim 14
Dependent Claim
15 words
The printing medium according to claim 1, wherein the ink-receiving layer contains a polymerizable compound.
Claim 15
Dependent Claim
46 words
The printing 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 16
Dependent Claim
32 words
The printing medium according to claim 1, wherein the coupling agent is contained in the alumina hydrate in a range of from 0.1 to 30% by weight based on the alumina hydrate.
Claim 17
Dependent Claim
32 words
The printing medium according to claim 1, wherein the coupling agent is contained in the alumina hydrate in a range of from 0.5 to 20% by weight based on the alumina hydrate.
Claim 18
Dependent Claim
32 words
The printing medium according to claim 1, wherein the coupling agent is contained in the alumina hydrate in a range of from 1 to 10% by weight based on the alumina hydrate.
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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) | 2002-10-11 | 2003-04-12 | 2003-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-11 | 2007-04-12 | 2007-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-11 | 2011-04-12 | 2011-10-12 | $7700.00 | Window Closed / Lapsed |