US4973499A
Expired / Lapsed
US
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Recording liquid having surface tension of at least 64 dyne/cm and viscosity of at most 2.5 cp at 25 degrees Celsius
Assignee: Canon Inc
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Filing: 1989-09-26
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Granted: 1990-11-27
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Expires: 2009-09-26
Abstract
Abstract A recording liquid with well-balanced characteristics is provided which comprises a colorant and a liquid medium, and has a surface tension to 64 dyne/cm or more at 25° C. and a viscosity of 2.5 centipoises or less at 25° C. A recording method employing the recording liquid is also provided.
Inventors
- 👤 Kazuo Iwata
- 👤 Shinichi Tochihara
- 👤 Shoji Koike
- 👤 Yasuko Tomida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:59
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/16
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
96 words
A recording liquid comprising 0.5 to 30 wt. % of a water soluble or dispersable dye for forming an image and a liquid medium containing from 30 to 98 wt. % water and 2 to 70 wt. % of a polyhydric alcohol or lower alkyl ether of polyhydric alcohol selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, glycerine, triethylene glycol monomethyl ether and triethylene glycol monoethylether, said recording liquid having a surface tension of 65 dyne/cm or more at 25° C. and a viscosity of 2.2 cp or less at 25° C.
Claim 2
Dependent Claim
96 words
A recording liquid comprising 0.5 to 30 wt. % of a water soluble or dispersable dye for forming an image and a liquid medium containing from 30 to 98 wt. % water and 2 to 70 wt. % of a polyhydric alcohol or lower alkyl ether of polyhydric alcohol selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, glycerine, triethylene glycol monomethyl ether and triethylene glycol monoethylether, said recording liquid having a surface tension of 65 dyne/cm or more at 25° C. and a viscosity of 2.2 cp or less at 25° C.
Claim 3
Dependent Claim
71 words
A recording liquid comprising 0.5 to 30 wt. % of a water soluble or dispersible dye for forming an image and a liquid medium containing 30 to 98 wt. % of water and 2 to 70 wt. % of an organic solvent for dissolving or dispersing the dye, having a surface tension of 65 dyne/cm or more at 25° C. and a viscosity of 2.2 cp or less at 25° C.
Claim 4
Dependent Claim
71 words
A recording liquid comprising 0.5 to 30 wt. % of a water soluble or dispersible dye for forming an image and a liquid medium containing 30 to 98 wt. % of water and 2 to 70 wt. % of an organic solvent for dissolving or dispersing the dye, having a surface tension of 65 dyne/cm or more at 25° C. and a viscosity of 2.2 cp or less at 25° C.
Claim 5
Dependent Claim
32 words
A recording liquid according to claim 1, wherein the content of said polyhydric alcohol or lower alkyl ether of polyhydric alcohol is within the range of from 5 to 65% by weight.
Claim 6
Dependent Claim
25 words
A recording liquid according to claim 2, wherein the content of the organic solvent is within the range of from 5 to 65% by weight.
Claim 7
Dependent Claim
33 words
A recording liquid according to claim 1, wherein the content of the colorant is within the range of from 1 to 5% by weight based on the total weight of the recording liquid.
Claim 8
Dependent Claim
33 words
A recording liquid according to claim 2, wherein the content of the colorant is within the range of from 1 to 5% by weight based on the total weight of the recording liquid.
Claim 9
Dependent Claim
26 words
A recording liquid according to claim 1, wherein the water content is 60% by weight or more based on the total weight of the recording liquid.
Claim 10
Dependent Claim
26 words
A recording liquid according to claim 2, wherein the water content is 60% by weight or more based on the total weight of the recording liquid.
Claim 11
Dependent Claim
26 words
A recording liquid according to claim 1, wherein the water content is 75% by weight or more based on the total weight of the recording liquid.
Claim 12
Dependent Claim
26 words
A recording liquid according to claim 2, wherein the water content is 75% by weight or more based on the total weight of the recording liquid.
Claim 13
Dependent Claim
104 words
A recording method for performing recording by attaching droplets of a recording liquid onto a recording medium, said recording liquid comprising 0.5 to 30 wt. % of a water soluble or disperisble dye for forming an image and a liquid medium containing 30 to 98 wt. % and 2 to 70 wt. % of water and an organic solvent for dissolving or dispersing the recording agent and having a surface tension at 25° C. of 65 dyne/cm or more and a viscosity of 2.2 cp or less wherein said recording medium is sized and has cellulose fibers exposed on the surface to be recorded.
Claim 14
Dependent Claim
104 words
A recording method for performing recording by attaching droplets of a recording liquid onto a recording medium, said recording liquid comprising 0.5 to 30 wt. % of a water soluble or disperisble dye for forming an image and a liquid medium containing 30 to 98 wt. % and 2 to 70 wt. % of water and an organic solvent for dissolving or dispersing the recording agent and having a surface tension at 25° C. of 65 dyne/cm or more and a viscosity of 2.2 cp or less wherein said recording medium is sized and has cellulose fibers exposed on the surface to be recorded.
Claim 15
Dependent Claim
17 words
A method according to claim 11, wherein said method is an on-demand type ink jet recording method.
Claim 16
Dependent Claim
33 words
A recording method according to claim 11, wherein the content of the colorant is within the range of from 1 to 5% by weight based on the total weight of the recording liquid.
Claim 17
Dependent Claim
26 words
A recording method according to claim 11, wherein the water content is 60% by weight or more based on the total weight of the recording liquid.
Claim 18
Dependent Claim
26 words
A recording method according to claim 11, wherein the water content is 75% by weight or more based on the total weight of the recording liquid.
Claim 19
Dependent Claim
120 words
An ink jet recording method for performing recording by ejecting droplets of a recording liquid from a fine nozzle toward a recording medium by the action of heat energy, said recording liquid comprising 0.5 to 30 wt. % of a water soluble or dispersable dye for forming an image and a liquid medium containing 30 to 98 wt. % water and 2 to 70 wt. % of an organic solvent for dissolving or dispersing the recording agent, said recording liquid having a surface tension of 65 dyne/cm or more at 25° C. and a viscosity of 2.2 cp or less at 25° C., wherein said recording medium is sized and has cellulose fibers exposed on the surface to be recorded.
Claim 20
Dependent Claim
120 words
An ink jet recording method for performing recording by ejecting droplets of a recording liquid from a fine nozzle toward a recording medium by the action of heat energy, said recording liquid comprising 0.5 to 30 wt. % of a water soluble or dispersable dye for forming an image and a liquid medium containing 30 to 98 wt. % water and 2 to 70 wt. % of an organic solvent for dissolving or dispersing the recording agent, said recording liquid having a surface tension of 65 dyne/cm or more at 25° C. and a viscosity of 2.2 cp or less at 25° C., wherein said recording medium is sized and has cellulose fibers exposed on the surface to be recorded.
Claim 21
Dependent Claim
33 words
A recording method according to claim 16, wherein the content of the dye is within the range of from 0.5 to 30% by weight based on the total weight of the recording liquid.
Claim 22
Dependent Claim
33 words
A recording method according to claim 16, wherein the content of the dye is within the range of from 1 to 5% by weight based on the total weight of the recording liquid.
Claim 23
Dependent Claim
22 words
A recording method according to claim 16, wherein the liquid medium is a solvent mixture of water and a water-soluble organic solvent.
Claim 24
Dependent Claim
26 words
A recording method according to claim 16, wherein the water content is 60% by weight or more based on the total weight of the recording liquid.
Claim 25
Dependent Claim
26 words
A recording method according to claim 16, wherein the water content is 75% by weight or more based on the total weight of the recording liquid.
Claim 26
Dependent Claim
16 words
A recording liquid according to claim 1, wherein said surface tension is at most 70 dyne/cm.
Claim 27
Dependent Claim
15 words
A recording liquid according to claim 1, wherein said viscosity is at least 1.5 cp.
Claim 28
Dependent Claim
15 words
A recording liquid according to claim 1, wherein said viscosity is at least 1.7 cp.
Claim 29
Dependent Claim
16 words
A recording liquid according to claim 2, wherein said surface tension is at most 70 dyne/cm.
Claim 30
Dependent Claim
15 words
A recording liquid according to claim 2, wherein said viscosity is at least 1.5 cp.
Claim 31
Dependent Claim
15 words
A recording liquid according to claim 2, wherein said viscosity is at least 1.7 cp.
Claim 32
Dependent Claim
16 words
A recording method according to claim 11, wherein said surface tension is at most 70 dyne/cm.
Claim 33
Dependent Claim
15 words
A recording method according to claim 11, wherein said viscosity is at least 1.5 cp.
Claim 34
Dependent Claim
15 words
A recording method according to claim 11, wherein said viscosity is at least 1.7 cp.
Claim 35
Dependent Claim
16 words
A recording method according to claim 16, wherein said surface tension is at most 70 dyne/cm.
Claim 36
Dependent Claim
15 words
A recording method according to claim 16, wherein said viscosity is at least 1.5 cp.
Claim 37
Dependent Claim
15 words
A recording method according to claim 16, wherein said viscosity is at least 1.7 cp.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-11-26 | 1994-05-28 | 1994-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-26 | 1998-05-28 | 1998-11-27 | $3760.00 | Window Closed / Lapsed |
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