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US5552182A
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Inking methods and compositions for production of digitized stereoscopic polarizing images
Assignee: Harvard University
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Filing: 1995-01-31
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Granted: 1996-09-03
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Expires: 2015-01-31
Abstract
Abstract The formation of polarizing images can be improved by the use of specially formulated inks. The inks can contain a de-salted dichroic dye, de-ionized water, and a polyhydric alcohol. The dichroic inks are particularly advantageous when printed on specially coated molecularly oriented sheets through the technology of ink jet printing. The ink molecules align themselves parallel to the oriented molecules of the oriented sheet thereby forming a light-polarizing image.
Inventors
- 👤 Julius J. Scarpetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:03
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41J; B41J11/00; B41J11/0015; B41J11/004; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2107; B41J3/00; B41J3/60; B41M3/00; B41M3/06; B41M5/502; B41M5/508; B41M5/5227; B41M5/5236; B41M7/00; B41M7/0027
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
45 words
An ink used in ink jet printing devices for staining a polymer substrate, the ink comprising: a de-salted dichroic dye, and a solution comprising a de-ionized water and a polyhydric alcohol, wherein the ink is structured to provide smooth flowing through the ink jet printer.
Claim 2
Dependent Claim
45 words
An ink used in ink jet printing devices for staining a polymer substrate, the ink comprising: a de-salted dichroic dye, and a solution comprising a de-ionized water and a polyhydric alcohol, wherein the ink is structured to provide smooth flowing through the ink jet printer.
Claim 3
Dependent Claim
13 words
An ink according to claim 1 wherein the polyhydric alcohol is diethylene glycol.
Claim 4
Dependent Claim
26 words
An ink according to claim 1 wherein the drying time of the ink varies according to the ratio of the de-ionized water to the polyhydric alcohol.
Claim 5
Dependent Claim
36 words
An ink according to claim 3 wherein the de-ionized water comprises about 85% to about 90% by weight of the ink and the polyhydric alcohol comprises about 10% to about 15% by weight of the ink.
Claim 6
Dependent Claim
36 words
An ink according to claim 3 wherein the de-ionized water comprises about 90% to about 95% by weight of the ink and the polyhydric alcohol comprises about 5% to about 10% by weight of the ink.
Claim 7
Dependent Claim
24 words
An ink according to claim 1 wherein the dye further comprises a pigment selected from the group consisting of cyan, magenta, yellow, and black.
Claim 8
Dependent Claim
14 words
An ink according to claim 1 wherein the ink further comprises a complexing agent.
Claim 9
Dependent Claim
12 words
An ink according to claim 7 wherein the complexing agent is EDTA.
Claim 10
Dependent Claim
13 words
An ink according to claim 1 wherein the ink further comprises a preservative.
Claim 11
Dependent Claim
12 words
An ink according to claim 9 wherein the preservative is dehydrosodium acetate.
Claim 12
Dependent Claim
11 words
An ink according to claim 1 wherein the dye is water-soluble.
Claim 13
Dependent Claim
41 words
An ink used in ink jet printing devices for staining a polymer substrate, the ink comprising: a de-salted, water-soluble, dichroic dye, and a solution comprising a de-ionized water and a polyhydric alcohol, wherein the dichroic dye is dissolved in the solution.
Claim 14
Dependent Claim
41 words
An ink used in ink jet printing devices for staining a polymer substrate, the ink comprising: a de-salted, water-soluble, dichroic dye, and a solution comprising a de-ionized water and a polyhydric alcohol, wherein the dichroic dye is dissolved in the solution.
Claim 15
Dependent Claim
38 words
An ink used in staining a polymer substrate, the ink comprising a de-salted dichroic dye solution in de-ionized water, a polyhydric alcohol ranging from about 5% to about 15% by weight of the ink, and a complexing agent.
Claim 16
Dependent Claim
38 words
An ink used in staining a polymer substrate, the ink comprising a de-salted dichroic dye solution in de-ionized water, a polyhydric alcohol ranging from about 5% to about 15% by weight of the ink, and a complexing agent.
Claim 17
Independent Claim
54 words
A method of manufacturing a polarizing image from a stretched and oriented polymer sheet, comprising the steps of forming an ink from a de-salted dye by dissolving the dye in de-ionized water and polyhydric alcohol, coating the polymer sheet with a dye-permeable hydrophilic polymeric material, and applying the ink to the coated polymer sheet.
Claim 18
Independent Claim
54 words
A method of manufacturing a polarizing image from a stretched and oriented polymer sheet, comprising the steps of forming an ink from a de-salted dye by dissolving the dye in de-ionized water and polyhydric alcohol, coating the polymer sheet with a dye-permeable hydrophilic polymeric material, and applying the ink to the coated polymer sheet.
Claim 19
Dependent Claim
14 words
A method according to claim 14 further comprising the step of desalting the dye.
Claim 20
Dependent Claim
16 words
A method according to claim 15 wherein the dye is desalted by high pressure liquid chromatography.
Claim 21
Dependent Claim
14 words
A method according to claim 15 wherein the dye is desalted by reverse osmosis.
Claim 22
Dependent Claim
14 words
A method according to claim 15 wherein the dye is desalted by ultra filtration.
Claim 23
Dependent Claim
15 words
A method according to claim 15 wherein the dye is desalted by reverse phase chromatography.
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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) | 1999-09-03 | 2000-03-04 | 2000-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-03 | 2004-03-04 | 2004-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-03 | 2008-03-04 | 2008-09-03 | $7700.00 | Window Closed / Lapsed |