US5220346A
Expired / Lapsed
US
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Printing processes with microwave drying
Assignee: Samsung Electronics Co Ltd
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Filing: 1992-02-03
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Granted: 1993-06-15
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Expires: 2012-02-03
Abstract
Abstract Disclosed is a printing process which comprises applying in imagewise fashion to a substrate an ink composition which comprises an aqueous liquid vehicle, a colorant, and an ionic compound at least partially ionizable in the liquid vehicle, said ink composition having a conductivity of at least about 10 milliSiemens per centimeter, and subsequently exposing the substrate to microwave radiation, thereby drying the images on the substrate. A specific embodiment of the invention is directed to a thermal ink jet printing process which comprises (1) incorporating into a thermal ink jet printing apparatus an ink composition which comprises an aqueous liquid vehicle, a colorant, and an ionic compound at least partially ionizable in the liquid vehicle, said ink composition having a conductivity of at least about 10 milliSiemens per centimeter; (2) heating the ink in an imagewise pattern to cause bubbles to form therein, thereby causing droplets of the ink to be ejected in an imagewise pattern onto a substrate, thereby generating images on the substrate; and (3) exposing the substrate to microwave radiation, thereby drying the images on the substrate.
Inventors
- 👤 Leonard M. Carreira
- 👤 Arthur M. Gooray
- 👤 Kenneth C. Peter
- 👤 Louis V. Isganitis
- 👤 Edward J. Radigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:42
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; B; B41; B41J; B41J11/00; B41J11/0015; B41J11/002; B41J11/0021; B41J11/00216; B41M; B41M7/00; B41M7/009
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
64 words
A printing process which comprises applying in imagewise fashion to a substrate an ink composition which comprises an aqueous liquid vehicle, a colorant, and an ionic compound at least partially ionizable in the liquid vehicle, said ink composition having a conductivity of at least about 10 milliSiemens per centimeter, and subsequently exposing the substrate to microwave radiation, thereby drying the images on the substrate.
Claim 2
Dependent Claim
64 words
A printing process which comprises applying in imagewise fashion to a substrate an ink composition which comprises an aqueous liquid vehicle, a colorant, and an ionic compound at least partially ionizable in the liquid vehicle, said ink composition having a conductivity of at least about 10 milliSiemens per centimeter, and subsequently exposing the substrate to microwave radiation, thereby drying the images on the substrate.
Claim 3
Dependent Claim
13 words
A process according to claim 1 wherein the liquid vehicle consists of water.
Claim 4
Dependent Claim
17 words
A process according to claim 1 wherein the liquid vehicle comprises water and a miscible organic component.
Claim 5
Dependent Claim
56 words
A process according to claim 3 wherein the miscible organic component is selected from the group consisting of ethylene glycol, propylene glycol, diethylene glycols, glycerine, dipropylene glycols, polyethylene glycols, polypropylene glycols, amides, ethers, carboxylic acids, esters, alcohols, organosulfides, organosulfoxides, sulfones, dimethylsulfoxide, sulfolane, alcohol derivatives, carbitol, butyl carbitol, cellusolve, ether derivatives, amino alcohols, ketones, and mixtures thereof.
Claim 6
Dependent Claim
12 words
A process according to claim 1 wherein the colorant is a dye.
Claim 7
Dependent Claim
12 words
A process according to claim 1 wherein the colorant is a pigment.
Claim 8
Dependent Claim
21 words
A process according to claim 1 wherein the ionic compound exhibits a degree of dissociation in the ink of 100 percent.
Claim 9
Dependent Claim
72 words
A process according to claim 1 wherein the ionic compound comprises a cation selected from the group consisting of H+, Li+, Na+, K+, Mg 2 +, Ca 2 +, Fe 2 +, Fe 3 +, Al 3 +, NH 4 +, and mixtures thereof and an anion selected from the group consisting of OH-, F-, Cl-, Br-, I-, NO 3 - , SO 4 2 -, CH 3 COO-, and mixtures thereof.
Claim 10
Dependent Claim
28 words
A process according to claim 1 wherein the ionic compound is present in an amount of from about 0.25 to about 30 percent by weight of the ink.
Claim 11
Dependent Claim
31 words
A process according to claim 1 wherein the ionic compound is an inorganic compound present in an amount of from about 0.5 to about 25 percent by weight of the ink.
Claim 12
Dependent Claim
31 words
A process according to claim 1 wherein the ionic compound is an organic compound present in an amount of from about 0.5 to about 25 percent by weight of the ink.
Claim 13
Dependent Claim
20 words
A process according to claim 1 wherein the ink has a conductivity of at least about 12 milliSiemens per centimeter.
Claim 14
Dependent Claim
22 words
A process according to claim 1 wherein the ink has a conductivity of from about 20 to about 50 milliSiemens per centimeter.
Claim 15
Dependent Claim
30 words
A process according to claim 1 wherein the substrate bearing the printed images is exposed to microwave radiation at a power level of from about 100 to about 1,000 watts.
Claim 16
Dependent Claim
30 words
A process according to claim 1 wherein the substrate bearing the printed images is exposed to microwave radiation at a power level of from about 400 to about 1,000 watts.
Claim 17
Dependent Claim
15 words
A process according to claim 1 wherein the ink also contains a penetration enhancing agent.
Claim 18
Dependent Claim
37 words
A process according to claim 16 wherein the penetration enhancing agent is selected from the group consisting of polyethyleneimines derivatized with polyethylene oxide, polyethyleneimines derivatized with polypropylene oxide, N-methylpyrrolidinone, dimethylsulfoxide, butyl carbitol, cyclohexylpyrrolidinone, 1,2-hexanediol, and mixtures thereof.
Claim 19
Dependent Claim
29 words
A process according to claim 16 wherein the penetration enhancing agent is present in the ink in an amount of from about 0.0001 to about 10 percent by weight.
Claim 20
Dependent Claim
29 words
A process according to claim 16 wherein the penetration enhancing agent is present in the ink in an amount of from about 0.01 to about 4 percent by weight.
Claim 21
Dependent Claim
86 words
A printing process which comprises (1) incorporating into an ink jet printing apparatus an ink composition which comprises a liquid vehicle, a colorant, and an ionic compound at least partially ionizable in the liquid vehicle, said ink composition having a conductivity of at least about 10 milliSiemens per centimeter; (2) causing droplets of the ink to be ejected in an imagewise pattern onto a substrate, thereby generating images on the substrate; and (3) exposing the substrate to microwave radiation, thereby drying the images on the substrate.
Claim 22
Dependent Claim
86 words
A printing process which comprises (1) incorporating into an ink jet printing apparatus an ink composition which comprises a liquid vehicle, a colorant, and an ionic compound at least partially ionizable in the liquid vehicle, said ink composition having a conductivity of at least about 10 milliSiemens per centimeter; (2) causing droplets of the ink to be ejected in an imagewise pattern onto a substrate, thereby generating images on the substrate; and (3) exposing the substrate to microwave radiation, thereby drying the images on the substrate.
Claim 23
Dependent Claim
18 words
A process according to claim 20 wherein the ink jet printing apparatus employs a continuous stream printing process.
Claim 24
Dependent Claim
17 words
A process according to claim 20 wherein the ink jet printing apparatus employs a drop-on-demand printing process.
Claim 25
Dependent Claim
105 words
A thermal ink jet printing process which comprises (1) incorporating into a thermal ink jet printing apparatus an ink composition which comprises an aqueous liquid vehicle, a colorant, and an ionic compound at least partially ionizable in the liquid vehicle, said ink composition having a conductivity of at least about 10 milliSiemens per centimeter; (2) heating the ink in an imagewise pattern to cause bubbles to form therein, thereby causing droplets of the ink to be ejected in an imagewise pattern onto a substrate, thereby generating images on the substrate; and (3) exposing the substrate to microwave radiation, thereby drying the images on the substrate.
Claim 26
Dependent Claim
105 words
A thermal ink jet printing process which comprises (1) incorporating into a thermal ink jet printing apparatus an ink composition which comprises an aqueous liquid vehicle, a colorant, and an ionic compound at least partially ionizable in the liquid vehicle, said ink composition having a conductivity of at least about 10 milliSiemens per centimeter; (2) heating the ink in an imagewise pattern to cause bubbles to form therein, thereby causing droplets of the ink to be ejected in an imagewise pattern onto a substrate, thereby generating images on the substrate; and (3) exposing the substrate to microwave radiation, thereby drying the images on the substrate.
Claim 27
Dependent Claim
12 words
A process according to claim 23 wherein the colorant is a dye.
Claim 28
Dependent Claim
12 words
A process according to claim 23 wherein the colorant is a pigment.
Claim 29
Dependent Claim
21 words
A process according to claim 23 wherein the ionic compound exhibits a degree of dissociation in the ink of 100 percent.
Claim 30
Dependent Claim
72 words
A process according to claim 23 wherein the ionic compound comprises a cation selected from the group consisting of H+, Li+, Na+, K+, Mg 2 +, Ca 2 +, Fe 2 +, Fe 3 +, Al 3 +, NH 4 +, and mixtures thereof and an anion selected from the group consisting of OH-, F-, Cl-, Br-, I-, NO 3 - , SO 4 2 -, CH 3 COO-, and mixtures thereof.
Claim 31
Dependent Claim
28 words
A process according to claim 23 wherein the ionic compound is present in an amount of from about 0.25 to about 30 percent by weight of the ink.
Claim 32
Dependent Claim
31 words
A process according to claim 23 wherein the ionic compound is an inorganic compound present in an amount of from about 0.5 to about 5 percent by weight of the ink.
Claim 33
Dependent Claim
31 words
A process according to claim 23 wherein the ionic compound is an organic compound present in an amount of from about 0.5 to about 25 percent by weight of the ink.
Claim 34
Dependent Claim
20 words
A process according to claim 23 wherein the ink has a conductivity of at least about 12 milliSiemens per centimeter.
Claim 35
Dependent Claim
22 words
A process according to claim 23 wherein the ink has a conductivity of from about 20 to about 50 milliSiemens per centimeter.
Claim 36
Dependent Claim
30 words
A process according to claim 23 wherein the substrate bearing the printed images is exposed to microwave radiation at a power level of from about 100 to about 1,000 watts.
Claim 37
Dependent Claim
15 words
A process according to claim 23 wherein the ink also contains a penetration enhancing agent.
Claim 38
Dependent Claim
37 words
A process according to claim 34 wherein the penetration enhancing agent is selected from the group consisting of polyethyleneimines derivatized with polyethylene oxide, polyethyleneimines derivatized with polypropylene oxide, N-methylpyrrolidinone, dimethylsulfoxide, butyl carbitol, cyclohexylpyrrolidinone, 1,2-hexanediol, and mixtures thereof.
Claim 39
Dependent Claim
29 words
A process according to claim 34 wherein the penetration enhancing agent is present in the ink in an amount of from about 0.0001 to about 10 percent by weight.
Claim 40
Dependent Claim
29 words
A process according to claim 34 wherein the penetration enhancing agent is present in the ink in an amount of from about 0.01 to about 4 percent by weight.
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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) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |