US6488751B1
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Ink set for ink jet recording and ink jet recording method
Assignee: Seiko Epson Corp
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Filing: 1999-10-06
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Granted: 2002-12-03
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Expires: 2019-10-06
Abstract
Abstract Disclosed are an ink set for ink jet recording which can realize images having excellent lightfastness, and an ink jet recording method using the same. The ink set for ink jet recording comprises two or more inks, the order from highest to lowest of fading of the inks being in the order from highest to lowest of lightness of the inks.
Inventors
- 👤 Kiyohiko Takemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:51
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2103
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
36 words
An ink set for ink jet recording, comprising two or more inks, the order from highest to lowest of fading of the inks being in the order from highest to lowest of lightness of the inks.
Claim 2
Dependent Claim
36 words
An ink set for ink jet recording, comprising two or more inks, the order from highest to lowest of fading of the inks being in the order from highest to lowest of lightness of the inks.
Claim 3
Dependent Claim
49 words
The ink set for ink jet recording according to claim 1 , wherein said inks are a yellow ink, a magenta ink, and a cyan ink and the order from highest to lowest of lightness of the inks is a yellow ink, a magenta ink, and a cyan ink.
Claim 4
Dependent Claim
55 words
The ink set for ink jet recording according to claim 1 , wherein said inks are a yellow ink, a magenta ink, a cyan ink, and a black ink and the order from highest to lowest of lightness of the inks is a yellow ink, a magenta ink, a cyan ink, and a black ink.
Claim 5
Dependent Claim
71 words
The ink set for ink jet recording according to claim 1 , wherein said inks are a yellow ink, a light magenta ink, a light cyan ink, a magenta ink, a cyan ink, and a black ink and the order from highest to lowest of lightness of the inks is a yellow ink, a light magenta ink, a light cyan ink, a magenta ink, a cyan ink, and a black ink.
Claim 6
Dependent Claim
67 words
The ink set for ink jet recording according to claim 1 , wherein said inks are a yellow ink, an orange ink, a magenta ink, a cyan ink, a green ink, and a black ink and the order from highest to lowest of lightness of the inks is a yellow ink, an orange ink, a magenta ink, a cyan ink, a green ink, and a black ink.
Claim 7
Dependent Claim
22 words
The ink set for ink jet recording according to claim 1 , wherein said inks each contain a pigment as a colorant.
Claim 8
Dependent Claim
37 words
An ink jet recording method comprising the steps of: ejecting droplets of inks; and depositing the droplets onto a recording medium to perform printing, said inks being inks constituting the ink set according to claim 1 .
Claim 9
Dependent Claim
28 words
The ink jet recording method according to claim 7 , wherein the inks are deposited in the order from highest to lowest of fading onto the recording medium.
Claim 10
Dependent Claim
32 words
An ink jet recording head comprising nozzles arranged in the direction of movement of the recording head so that the inks are ejected in the order from highest to lowest of fading.
Claim 11
Dependent Claim
32 words
An ink jet recording head comprising nozzles arranged in the direction of movement of the recording head so that the inks are ejected in the order from highest to lowest of fading.
Claim 12
Dependent Claim
16 words
An ink jet recording apparatus comprising the ink jet recording head according to claim 9 .
Claim 13
Dependent Claim
15 words
A recorded medium printed by the ink jet recording method according to claim 7 .
Claim 14
Independent Claim
140 words
A method for preparing an ink set for ejecting from an ink jet printer to form a color image on a recording medium, said method comprising (i) preparing at least first, second and third inks, the first ink comprising a first pigment as a colorant, the second ink comprising a second pigment as a colorant, and the third ink comprising a third pigment as a colorant, said first, second and third pigments being provided with respective diameters such that a fading of the first ink (Fa), a fading of the second ink (Fb) and a fading of the third ink (Fc) satisfy the following relationship: Fa>Fb>Fc said first, second and third inks having lightnesses (La), (Lb) and (Lc) respectively that satisfy the following relationship La>Lb>Lc; and (ii) incorporating at least the first, second and third inks into the ink set.
Claim 15
Independent Claim
140 words
A method for preparing an ink set for ejecting from an ink jet printer to form a color image on a recording medium, said method comprising (i) preparing at least first, second and third inks, the first ink comprising a first pigment as a colorant, the second ink comprising a second pigment as a colorant, and the third ink comprising a third pigment as a colorant, said first, second and third pigments being provided with respective diameters such that a fading of the first ink (Fa), a fading of the second ink (Fb) and a fading of the third ink (Fc) satisfy the following relationship: Fa>Fb>Fc said first, second and third inks having lightnesses (La), (Lb) and (Lc) respectively that satisfy the following relationship La>Lb>Lc; and (ii) incorporating at least the first, second and third inks into the ink set.
Claim 16
Dependent Claim
21 words
The method according to claim 12 , wherein the first, second and third pigments collectively comprise cyan, magenta and yellow pigments.
Claim 17
Dependent Claim
30 words
The method according to claim 13 , wherein the first pigment is the yellow pigment, the second pigment is the magenta pigment and the third pigment is the cyan pigment.
Claim 18
Dependent Claim
30 words
The method according to claim 13 , wherein the first pigment is the yellow pigment, the second pigment is the cyan pigment and the third pigment is the magenta pigment.
Claim 19
Dependent Claim
11 words
The ink set prepared by the method of claim 12 .
Claim 20
Dependent Claim
11 words
The ink set prepared by the method of claim 13 .
Claim 21
Dependent Claim
67 words
In a method for inkjet printing comprising the steps of (a) providing an ink set comprising at least yellow, cyan and magenta inks; and (b) depositing the inks onto a recording medium to form a color image thereon, wherein the image fades noticeably over time, the improvement comprising rendering any change in the image less noticeable by providing the ink set of claim 13 in step (a).
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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) | 2005-12-02 | 2006-06-03 | 2006-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-12-02 | 2010-06-03 | 2010-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-12-02 | 2014-06-03 | 2014-12-03 | $7700.00 | Window Closed / Lapsed |