US5614007A
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Ink set, and method and apparatus for image formation employing the same
Assignee: Canon Inc
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Filing: 1995-03-27
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Granted: 1997-03-25
•
Expires: 2015-03-27
Abstract
Abstract Provided is an ink set comprising a liquid composition containing a cationic substance, and a black ink in combination, the black ink containing a black dye, and a cyan dye and/or a yellow dye as water-soluble anionic dyes.
Inventors
- 👤 Yutaka Kurabayashi
- 👤 Katsuhiro Shirota
- 👤 Katsuhiko Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:32
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
43 words
An ink set comprising a liquid composition containing a lower-molecular cationic substance and a higher-molecular cationic substance and a black ink in combination, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 2
Dependent Claim
43 words
An ink set comprising a liquid composition containing a lower-molecular cationic substance and a higher-molecular cationic substance and a black ink in combination, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 3
Dependent Claim
62 words
An ink set comprising a liquid composition containing a lower-molecular cationic substance of a molecular weight of not higher than 1000 and a higher-molecular weight cationic substance of a molecular weight of not lower than 1,500 and a black ink in combination, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 4
Dependent Claim
62 words
An ink set comprising a liquid composition containing a lower-molecular cationic substance of a molecular weight of not higher than 1000 and a higher-molecular weight cationic substance of a molecular weight of not lower than 1,500 and a black ink in combination, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 5
Dependent Claim
24 words
The ink set according to claim 1 or 2, wherein the anionic dye is any one of acid dyes, direct dyes, and reactive dyes.
Claim 6
Dependent Claim
33 words
The ink set according to claim 1 or 2, wherein the black ink contains the anionic dye at a content of from 0.1 to 15% by weight based on the entire black ink.
Claim 7
Dependent Claim
40 words
The ink set according to claim 1 or 2, wherein the black ink contains the cyan dye, yellow dye or mixtures thereof at a content of 0.1 to 50% by weight based on the total weight of the black dye.
Claim 8
Dependent Claim
40 words
The ink set according to claim 1 or 2, wherein the black ink contains the cyan dye, yellow dye or mixtures thereof at a content of 0.5 to 40% by weight based on the total weight of the black dye.
Claim 9
Dependent Claim
23 words
The ink set according to claim 1 or 2, wherein the lower-molecular cationic substance has a molecular weight ranging from 100 to 700.
Claim 10
Dependent Claim
23 words
The ink set according to claim 1 or 2, wherein the higher-molecular cationic substance has a molecular weight ranging from 1,500 to 10,000.
Claim 11
Dependent Claim
21 words
The ink set according to claim 1 or 2, wherein the black ink further comprises water and a water-soluble organic solvent.
Claim 12
Dependent Claim
21 words
The ink set according to claim 1 or 2, wherein the liquid composition further comprises water and a water-soluble organic solvent.
Claim 13
Dependent Claim
32 words
The ink set according to claim 1 or 2, wherein the ink contains water at a content of from 10 to 97.5% by weight based on the total weight of the ink.
Claim 14
Dependent Claim
34 words
The ink set according to claim 1 or 2, wherein the ink contains an organic solvent at a content of from 2 to 80% by weight based on the total weight of the ink.
Claim 15
Dependent Claim
24 words
The ink set according to claim 1 or 2, wherein the ink has a viscosity ranging from 1 to 20 cP at 25° C.
Claim 16
Dependent Claim
25 words
The ink set according to claim 1 or 2, wherein the ink has a surface tension of not lower than 25 dyn/cm at 25° C.
Claim 17
Dependent Claim
20 words
The ink set according to claim 1 or 2, wherein the ink has a pH ranging from 6 to 10.
Claim 18
Dependent Claim
24 words
The ink set according to claim 1 or 2, wherein any of a yellow ink, a magenta ink, and a cyan ink is combined.
Claim 19
Dependent Claim
50 words
An image-forming method employing a liquid composition containing a lower-molecular cationic substance and a higher-molecular cationic substance, and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water soluble anionic dyes.
Claim 20
Dependent Claim
50 words
An image-forming method employing a liquid composition containing a lower-molecular cationic substance and a higher-molecular cationic substance, and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water soluble anionic dyes.
Claim 21
Independent Claim
58 words
A method for mitigating a bronzing phenomenon in an image formation, employing a liquid composition containing a lower-molecular cationic substance and a higher-molecular cationic substance, and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water soluble anionic dyes.
Claim 22
Independent Claim
58 words
A method for mitigating a bronzing phenomenon in an image formation, employing a liquid composition containing a lower-molecular cationic substance and a higher-molecular cationic substance, and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water soluble anionic dyes.
Claim 23
Dependent Claim
38 words
An image-forming method comprising forming a black image portion by applying a liquid composition and a black ink on a recording medium by an ink-jet system, which employs an ink set as stated in claim 1 or 2.
Claim 24
Dependent Claim
27 words
The image-forming method according to claim 19 wherein the ink-jet system is a system to eject ink droplets by action of thermal energy applied to the ink.
Claim 25
Dependent Claim
41 words
A recording unit comprising containers for a liquid composition and a black ink, and a head for ejecting the liquid composition and the black ink as droplets, the recording unit employing an ink set as stated in claim 1 or 2.
Claim 26
Dependent Claim
24 words
The recording unit according to claim 21 wherein an ink-jet system to eject droplets by action of thermal energy is applied to the head.
Claim 27
Dependent Claim
24 words
An ink cartridge comprising containers for a liquid composition and a black ink, employing an ink set as stated in claim 1 or 2.
Claim 28
Dependent Claim
14 words
An ink-jet recording apparatus, provided with a recording unit as stated in claim 21.
Claim 29
Dependent Claim
14 words
An ink-jet recording apparatus, provided with a recording unit as stated in claim 22.
Claim 30
Dependent Claim
13 words
An ink-jet recording apparatus, having the ink cartridge as stated in claim 23.
Claim 31
Dependent Claim
20 words
The ink-jet recording apparatus according to claim 26 having a recording head which ejects ink droplets by an ink-jet system.
Claim 32
Dependent Claim
16 words
An ink-jet recording apparatus, provided with an ink set as stated in claim 1 or 2.
Claim 33
Dependent Claim
23 words
The ink-jet recording apparatus according to claim 28, which is further provided with a head which ejects ink droplets by an ink-jet system.
Claim 34
Dependent Claim
50 words
An image, comprising a black portion formed by combined use of a liquid composition containing a lower-molecular cationic substance and a higher-molecular cationic substance, and a black ink, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes in combination.
Claim 35
Dependent Claim
50 words
An image, comprising a black portion formed by combined use of a liquid composition containing a lower-molecular cationic substance and a higher-molecular cationic substance, and a black ink, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes in combination.
Claim 36
Dependent Claim
59 words
An image-forming method employing a liquid composition containing a lower-molecular cationic substance of not higher than 1,000 and a higher-molecular cationic substance of not lower than 1,500 and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 37
Dependent Claim
59 words
An image-forming method employing a liquid composition containing a lower-molecular cationic substance of not higher than 1,000 and a higher-molecular cationic substance of not lower than 1,500 and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 38
Independent Claim
67 words
A method for mitigating a bronzing phenomenon in an image formation, employing a liquid composition containing a lower-molecular cationic substance of not higher than 1,000 and a higher-molecular cationic substance of not lower than 1,500 and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 39
Independent Claim
67 words
A method for mitigating a bronzing phenomenon in an image formation, employing a liquid composition containing a lower-molecular cationic substance of not higher than 1,000 and a higher-molecular cationic substance of not lower than 1,500 and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 40
Dependent Claim
66 words
An image, comprising a black portion formed by combined use of a liquid composition containing a lower-molecular cationic substance of not higher than 1,000 and a higher-molecular cationic substance of not lower than 1,500 and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
Claim 41
Dependent Claim
66 words
An image, comprising a black portion formed by combined use of a liquid composition containing a lower-molecular cationic substance of not higher than 1,000 and a higher-molecular cationic substance of not lower than 1,500 and a black ink in combination for forming a black color portion, the black ink containing a black dye, and a cyan dye, yellow dye or mixtures thereof as water-soluble anionic dyes.
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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) | 2000-03-24 | 2000-09-23 | 2001-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-24 | 2004-09-23 | 2005-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-24 | 2008-09-23 | 2009-03-25 | $7700.00 | Window Closed / Lapsed |