US20050041082A1
Expired / Lapsed
US
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Ink set, recording method using the ink set, recording device, recording system, and recorded object
Assignee: Seiko Epson Corp
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Filing: 2003-11-04
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Granted: —
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Expires: 2023-11-04
Abstract
Abstract It is an object of the present invention to provide an ink set that has a wide color reproduction range, has high saturation, produces a glossy recorded image with no pronounced granularity caused by dot expression, greatly suppresses granularity caused by dot expression particularly when applied to a medium having a coating layer, and allows a recorded image with outstanding coloration to be obtained when applied to plain paper. The present invention provides an ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the Lab colorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges. (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.
Inventors
- 👤 Shuichi Kataoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:17
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
83 words
1 . An ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the lab calorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges: (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.
Claim 2
Dependent Claim
83 words
1 . An ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the lab calorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges: (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.
Claim 3
Dependent Claim
52 words
2 . The ink set according to claim 1 , wherein the L* value for the magenta ink (M) is within a range of at least 76 and less than 83, and the L* value for the red ink (R) is within the range of at least 67.5 and less than 69.
Claim 4
Dependent Claim
52 words
3 . The ink set according to claim 1 , wherein the L* value for the magenta ink (M) is within a range of at least 76 and less than 83, and the L* value for the red ink (R) is within the range of at least 69 and less than 74.
Claim 5
Dependent Claim
52 words
4 . The ink set according to claim 1 , wherein the L* value for the magenta ink (M) is within a range of at least 76 and less than 83, and the L* value for the red ink (R) is within the range of at least 62 and less than 67.5.
Claim 6
Dependent Claim
52 words
5 . The ink set according to claim 1 , wherein the L* value for the magenta ink (M) is within a range of at least 76 and less than 83, and the L* value for the red ink (R) is within the range of at least 55 and less than 62.
Claim 7
Dependent Claim
52 words
6 . The ink set according to claim 1 , wherein the L* value for the magenta ink (M) is within a range of at least 83 and less than 87, and the L* value for the red ink (R) is within the range of at least 55 and less than 62.
Claim 8
Dependent Claim
53 words
7 . The ink set according to claim 1 , wherein the L* value for the magenta ink (M) is within a range of at least 87 and no more than 93, and the L* value for the red ink (R) is within the range of at least 67.5 and less than 69.
Claim 9
Dependent Claim
38 words
8 . The ink set according to claim 2 , wherein the magenta ink contains 1.7 to 3.0 wt % C.I. Pigment Violet 19, and the red ink contains 2.2 to 2.8 wt % C.I. Pigment Red 177.
Claim 10
Dependent Claim
38 words
9 . The ink set according to claim 3 , wherein the magenta ink contains 1.7 to 3.0 wt % C.I. Pigment Violet 19, and the red ink contains 1.6 to 2.3 wt % C.I. Pigment Red 178.
Claim 11
Dependent Claim
38 words
10 . The ink set according to claim 4 , wherein the magenta ink contains 1.7 to 3.0 wt % C.I. Pigment Violet 19, and the red ink contains 1.8 to 2.4 wt % C.I. Pigment Red 264.
Claim 12
Dependent Claim
38 words
11 . The ink set according to claim 5 , wherein the magenta ink contains 1.7 to 3.0 wt % C.I. Pigment Violet 19, and the red ink contains 4.0 to 6.0 wt % C.I. Pigment Red 254.
Claim 13
Dependent Claim
40 words
12 . The ink set according to claim 6 , wherein the magenta ink contains 1.1 to 1.7 wt % C.I. Pigment Red 202 or 122, and the red ink contains 4.0 to 6.0 wt % C.I. Pigment Red 254.
Claim 14
Dependent Claim
52 words
13 . The ink set according to claim 7 , wherein the magenta ink contains 0.1 to 1.5 wt % C.I. Pigment Red 202 or 122 and 0.1 to 1.5 wt % C.I. Pigment Red 209 or 207, and the red ink contains 2.2 to 2.8 wt % C.I. Pigment Red 177.
Claim 15
Dependent Claim
38 words
14 . The ink set according to claim 8 , wherein the yellow ink contains 2.0 to 4.0 wt % C.I. Pigment Yellow 74, and the cyan ink contains 0.5 to 2.5 wt % C.I. Pigment Blue 15:3.
Claim 16
Dependent Claim
47 words
15 . The ink set according to claim 1 , further comprising a violet ink (Vi) whose L* value in the Lab colorimetric system specified by CIE for an aqueous solution diluted 1000 times is within a range of at least 40 and no more than 58.
Claim 17
Dependent Claim
24 words
16 . The ink set according to claim 15 , wherein the violet ink contains 1.0 to 3.0 wt % C.I. Pigment Violet 23.
Claim 18
Dependent Claim
46 words
17 . The ink set according to claim 1 , wherein each of the inks contains a pigment as a colorant and a dispersant for dispersing said pigment, said dispersant being contained in an amount of 20 to 80 wt % with respect to said pigment.
Claim 19
Dependent Claim
22 words
18 . The ink set according to claim 1 , further comprising a photoblack ink (PK) containing 3.0 wt % carbon black.
Claim 20
Dependent Claim
45 words
19 . The ink set according to claim 18 , wherein the photoblack ink contains a pigment as a colorant and a dispersant for dispersing said pigment, said dispersant being contained in an amount of 60 to 120 wt % with respect to said pigment.
Claim 21
Dependent Claim
25 words
20 . The ink set according to claim 1 to 19 , further comprising a matte black ink (MK) containing 3.0 wt % carbon black.
Claim 22
Dependent Claim
26 words
21 . The ink set according to claim 20 , wherein the matte black ink contains a self-dispersing pigment as a colorant, and contains no dispersant.
Claim 23
Dependent Claim
22 words
22 . The ink set according to claim 1 , wherein each ink contains 0.1 to 30 wt % high-boiling organic solvent.
Claim 24
Dependent Claim
21 words
23 . The ink set according to claim 1 , wherein each ink contains 1 to 20 wt % penetration promoter.
Claim 25
Dependent Claim
24 words
24 . The ink set according to claim 1 , wherein each ink contains 0.1 to 5 wt % acetylene glycol and/or silicone compound.
Claim 26
Dependent Claim
19 words
25 . A recording method for forming an image by using the ink set according to claim 1 .
Claim 27
Dependent Claim
19 words
26 . A recording system for forming an image by using the ink set according to claim 1 .
Claim 28
Dependent Claim
17 words
27 . Recorded matter comprising an image formed by using the ink set according to claim 1.
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