Patent US4734336A successfully refreshed from Google Patents.
US4734336A
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Twin ply papers for ink jet processes
Assignee: Xerox Corp
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Filing: 1986-10-02
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Granted: 1988-03-29
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Expires: 2006-10-02
Abstract
Abstract A twin ply uncoated paper for ink jet processes comprised of a supporting paper substrate sheet as a first ply, and thereover as a second ply a paper sheet with filler additives attached to the fibers thereof, which additives are, for example, selected from the group consisting of amorphous synthetic silicas, inorganic silicates, metal alumino-silicates, and inorganic oxides. Three ply papers are also illustrated wherein there is situated between two second plies a supporting substrate sheet.
Inventors
- 👤 John F. Oliver
- 👤 Arthur Y. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:11
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/0035; D; D21; D21H; D21H27/00; D21H27/30; D21H27/38; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982; Y10T428/31993; Y10T428/31996
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
61 words
A twin ply uncoated paper for ink jet processes comprised of a supporting paper substrate sheet having essentially no filler additives as a first ply, and thereover as a second ply a paper sheet with filler additives attached to the fibers thereof, which filler additives are selected from the group consisting of synthetic silicas, inorganic silicates, sodium alumino-silicates, and inorganic oxides.
Claim 2
Dependent Claim
61 words
A twin ply uncoated paper for ink jet processes comprised of a supporting paper substrate sheet having essentially no filler additives as a first ply, and thereover as a second ply a paper sheet with filler additives attached to the fibers thereof, which filler additives are selected from the group consisting of synthetic silicas, inorganic silicates, sodium alumino-silicates, and inorganic oxides.
Claim 3
Dependent Claim
23 words
An uncoated paper in accordance with claim 1 wherein the thickness of the second ply is from about 5 to about 50 microns.
Claim 4
Dependent Claim
23 words
An uncoated paper in accordance with claim 1 wherein the thickness of the first ply is from about 50 to about 90 microns.
Claim 5
Dependent Claim
18 words
An uncoated paper in accordance with claim 1 wherein the thickness of the second ply is 15 microns.
Claim 6
Dependent Claim
20 words
An uncoated paper in accordance with claim 1 wherein the supporting substrate is obtained from bleached hardwoods and softwood fibers.
Claim 7
Dependent Claim
17 words
An uncoated paper in accordance with claim 1 wherein the supporting substrate is obtained from cotton fibers.
Claim 8
Dependent Claim
19 words
An uncoated paper in accordance with claim 1 wherein the supporting substrate is obtained from bleached mechanical pulp fibers.
Claim 9
Dependent Claim
21 words
An uncoated paper in accordance with claim 1 wherein the second ply paper is obtained from bleached hardwoods and softwood fibers.
Claim 10
Dependent Claim
18 words
An uncoated paper in accordance with claim 1 wherein the second ply paper is obtained from cotton fibers.
Claim 11
Dependent Claim
21 words
An uncoated paper in accordance with claim 1 wherein the second ply has incorporated therein a natural or synthetic product binder.
Claim 12
Dependent Claim
23 words
An uncoated paper in accordance with claim 1 wherein the second ply has incorporated therein cationically charged natural product and synthetic polymer materials.
Claim 13
Dependent Claim
73 words
An uncoated paper for ink jet paper comprising a supporting paper substrate sheet having essentially no filler additives as a first ply, which supporting substrate sheet is situated between a second ply and a third ply, wherein the second and third plies are paper sheets having filler additives attached to the fibers thereof, wherein the filler additives are selected from the group consisting of synthetic silicas, inorganic silicates, sodium alumino-silicates, and inorganic oxides.
Claim 14
Dependent Claim
73 words
An uncoated paper for ink jet paper comprising a supporting paper substrate sheet having essentially no filler additives as a first ply, which supporting substrate sheet is situated between a second ply and a third ply, wherein the second and third plies are paper sheets having filler additives attached to the fibers thereof, wherein the filler additives are selected from the group consisting of synthetic silicas, inorganic silicates, sodium alumino-silicates, and inorganic oxides.
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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) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |