US5679141A
Expired / Lapsed
US
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Magenta ink jet pigment set
Assignee: Eastman Kodak Co
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Filing: 1996-08-20
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Granted: 1997-10-21
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Expires: 2016-08-20
Abstract
Abstract The invention provides an ink jet pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the magenta pigment has a density between 0.25 and 0.93 at 520 nm, a density between 0.9 and 1.0 at 540 nm, and a density between 0.9 and 1.0 at 560 nm. Such a pigment set enables an increase in the color gamut obtainable for ink jet imaging.
Inventors
- 👤 Elizabeth McInerney
- 👤 David Joseph Oldfield
- 👤 Douglas Eugene Bugner
- 👤 Alexandra DiLauro Bermel
- 👤 Domenic Santilli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:07
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
57 words
An ink jet pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the magenta pigment has a density between 0.25 and 0.93 at 520 nm, a density between 0.9 and 1.0 at 540 nm, and a density between 0.9 and 1.0 at 560 nm.
Claim 2
Dependent Claim
57 words
An ink jet pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the magenta pigment has a density between 0.25 and 0.93 at 520 nm, a density between 0.9 and 1.0 at 540 nm, and a density between 0.9 and 1.0 at 560 nm.
Claim 3
Dependent Claim
25 words
The pigment set of claim 1 wherein the distribution curve of the magenta pigment also has a density between 0.25 and 0.86 at 510 nm.
Claim 4
Dependent Claim
25 words
The pigment set of claim 2 wherein the distribution curve of the magenta pigment also has a density between 0.25 and 0.79 at 500 nm.
Claim 5
Dependent Claim
11 words
The pigment set of claim 1 additionally comprising an achromatic pigment.
Claim 6
Dependent Claim
11 words
The pigment set of claim 2 additionally comprising an achromatic pigment.
Claim 7
Dependent Claim
11 words
The pigment set of claim 3 additionally comprising an achromatic pigment.
Claim 8
Dependent Claim
41 words
The pigment set of claim 1 wherein the yellow pigment exhibits a normalized spectral transmission density distribution curve which has a transmission density of between 0.9 and 1.0 at 450 nm and a density between 0.8 and 1.0 at 470 nm.
Claim 9
Dependent Claim
41 words
The pigment set of claim 2 wherein the yellow pigment exhibits a normalized spectral transmission density distribution curve which has a transmission density of between 0.9 and 1.0 at 450 nm and a density between 0.8 and 1.0 at 470 nm.
Claim 10
Dependent Claim
41 words
The pigment set of claim 3 wherein the yellow pigment exhibits a normalized spectral transmission density distribution curve which has a transmission density of between 0.9 and 1.0 at 450 nm and a density between 0.8 and 1.0 at 470 nm.
Claim 11
Dependent Claim
11 words
The pigment set of claim 7 additionally comprising an achromatic pigment.
Claim 12
Dependent Claim
11 words
The pigment set of claim 8 additionally comprising an achromatic pigment.
Claim 13
Dependent Claim
11 words
The pigment set of claim 9 additionally comprising an achromatic pigment.
Claim 14
Dependent Claim
30 words
The pigment set of claim 4 wherein the normalized spectral transmission density distribution curve of the yellow pigment also has a density of between 0.5 and 0.9 at 490 nm.
Claim 15
Dependent Claim
13 words
An ink jet cartridge comprising a pigment set in accordance with claim 1.
Claim 16
Dependent Claim
13 words
An ink jet cartridge comprising a pigment set in accordance with claim 4.
Claim 17
Dependent Claim
14 words
An ink jet cartridge comprising a pigment colorant set in accordance with claim 7.
Claim 18
Dependent Claim
14 words
An ink jet cartridge comprising a pigment colorant set in accordance with claim 10.
Claim 19
Dependent Claim
14 words
An ink jet printing system comprising reservoirs containing the pigment set of claim 1.
Claim 20
Dependent Claim
14 words
An ink jet printing system comprising reservoirs containing the pigment set of claim 4.
Claim 21
Dependent Claim
14 words
An ink jet printing system comprising reservoirs containing the pigment set of claim 7.
Claim 22
Dependent Claim
14 words
An ink jet printing system comprising reservoirs containing the pigment set of claim 10.
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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) | 2000-10-20 | 2001-04-21 | 2001-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-20 | 2005-04-21 | 2005-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-20 | 2009-04-21 | 2009-10-21 | $7700.00 | Window Closed / Lapsed |