Patent US4946741A successfully refreshed from Google Patents.
US4946741A
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Ink recording sheet
Assignee: Fujifilm Holdings Corp
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Filing: 1989-03-07
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Granted: 1990-08-07
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Expires: 2009-03-07
Abstract
Abstract An ink recording sheet comprising a transparent support having thereon an ink recording layer comprising a mixture of an amino group-deactivated gelatin derivative and a polyalkylene oxide.
Inventors
- 👤 Toshiaki Aono
- 👤 Takeo Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:05
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5236; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31971
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
27 words
An ink recording sheet comprising a transparent support having thereon an ink recording layer comprising a mixture of an amino group-deactivated gelatin derivative and a polyalkylene oxide.
Claim 2
Dependent Claim
27 words
An ink recording sheet comprising a transparent support having thereon an ink recording layer comprising a mixture of an amino group-deactivated gelatin derivative and a polyalkylene oxide.
Claim 3
Dependent Claim
38 words
An ink recording sheet as claimed in claim 1, wherein said amino group-deactivated gelatin derivative contains deactivated amino groups in a proportion of 50 mol% or more based on the total amount of amino groups in said gelatin.
Claim 4
Dependent Claim
38 words
An ink recording sheet as claimed in claim 2, wherein said amino group-deactivated gelatin derivative contains deactivated amino groups in a proportion of 80 mol% or more based on the total amount of amino groups in said gelatin.
Claim 5
Dependent Claim
38 words
An ink recording sheet as claimed in claim 3, wherein said amino group-deactivated gelatin derivative contains deactivated amino groups in a proportion of 90 mol% or more based on the total amount of amino groups in said gelatin.
Claim 6
Dependent Claim
35 words
An ink recording sheet as claimed in claim 1, wherein said amino group-deactivated gelatin derivative is selected from the group consisting of acetyl gelatins, phthaloyl gelatins, malenoyl gelatins, benzoyl gelatins, succinoyl gelatins and methylurea gelatins.
Claim 7
Dependent Claim
16 words
An ink recording sheet as claimed in claim 1, wherein said polyalkylene oxide is polyethylene oxide.
Claim 8
Dependent Claim
25 words
An ink recording sheet as claimed in claim 1, wherein the molecular weight of said polyalkylene oxide is from 5×10 4 to 1×10 6 .
Claim 9
Dependent Claim
25 words
An ink recording sheet as claimed in claim 1, wherein the molecular weight of said polyalkylene oxide is from 1×10 5 to 5×10 5 .
Claim 10
Dependent Claim
31 words
An ink recording sheet as claimed in claim 1, wherein said amino group-deactivated gelatin derivative and said polyalkylene oxide are present in a ratio of from 20/80 to 80/20 by weight.
Claim 11
Dependent Claim
31 words
An ink recording sheet as claimed in claim 9, wherein said amino group-deactivated gelatin derivative and said polyalkylene oxide are present in a ratio of from 30/70 to 70/30 by weight.
Claim 12
Dependent Claim
33 words
An ink recording sheet as claimed in claim 1, wherein the amount of said mixture of an amino group-deactivated gelatin derivative and a polyalkylene oxide is from 1 to 20 g/m 2 .
Claim 13
Dependent Claim
33 words
An ink recording sheet as claimed in claim 11, wherein the amount of said mixture of an amino group-deactivated gelatin derivative and a polyalkylene oxide is from 2 to 10 g/m 2 .
Claim 14
Dependent Claim
36 words
An ink recording sheet as claimed in claim 1, wherein said ink receiving layer further comprises a hydrophilic binder in an amount of from 30 wt% or less based on the total amount of said layer.
Claim 15
Dependent Claim
36 words
An ink recording sheet as claimed in claim 13, wherein said ink receiving layer further comprises a hydrophilic binder in an amount of from 15 wt% or less based on the total amount of said layer.
Claim 16
Dependent Claim
27 words
An ink recording sheet as claimed in claim 13, wherein said hydrophilic binder is selected from the group consisting of acrylic acid/vinyl alcohol copolymers and carboxymethyl cellulose.
Claim 17
Dependent Claim
23 words
An ink recording sheet as claimed in claim 1, wherein the thickness of said ink receiving layer is from 1 to 50 μm.
Claim 18
Dependent Claim
23 words
An ink recording sheet as claimed in claim 16, wherein the thickness of said ink receiving layer is from 2 to 30 μm.
Claim 19
Dependent Claim
23 words
An ink recording sheet as claimed in claim 17, wherein the thickness of said ink receiving layer is from 3 to 15 μm.
References Cited (Backward Citations)
US4877688A
Cited
US4865914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |