US6203604B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink, color filter, liquid crystal panel, and computer, and process for producing color filter
Assignee: Canon Inc
•
Filing: 1999-03-25
•
Granted: 2001-03-20
•
Expires: 2019-03-25
Abstract
Abstract A novel ink is provided which comprises a metal complex azopyrazolone dye and a xanthene dye. This ink is suitable for forming a color filter by an ink-jet system. A color filter, a liquid crystal panel, and a computer employing the ink are also provided. Further, a process for producing the color filter is provided.
Inventors
- 👤 Akio Kashiwazaki
- 👤 Katsuhiro Shirota
- 👤 Koichiro Nakazawa
- 👤 Masashi Hirose
- 👤 Mayumi Yokoyama
- 👤 Yoshihisa Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:29
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; C09B; C09B67/00; C09B67/0033; C09B67/0041; G; G02; G02B; G02B5/00; G02B5/20; G02B5/201; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133516
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
15 words
An ink for ink-jet recording comprising a metal complex azopyrazolone dye and a xanthene dye.
Claim 2
Dependent Claim
15 words
An ink for ink-jet recording comprising a metal complex azopyrazolone dye and a xanthene dye.
Claim 3
Dependent Claim
129 words
The ink according to claim 1 , wherein the metal complex azopyrazolone dye is a dye having a structure of the general formula (I): wherein R 1 , R 2 , R 3 and R 4 are each independently a hydrogen atom, a halogen atom, a nitro group, a linear or branched alkyl group having 1 to 5 carbon atoms, a CF 3 group, or an SO 3 (M1) group, where M1 is an alkali metal or NH 4 ; R 5 and R 6 are each independently a hydrogen atom, a halogen atom, or an SO 3 (M2) group, where M2 is an alkali metal or NH 4 ; M3 is Cr. Ni or Co; and X1 + is an alkali metal cation or NH 4 + .
Claim 4
Dependent Claim
117 words
The ink according to claim 1 , wherein the metal complex azopyrazolone dye is a dye having a structure of the general formula (II): wherein R 7 and R 8 are each independently a hydrogen atom, a halogen atom, a nitro group, a linear or branched alkyl group having 1 to 5 carbon atoms, a CF 3 group, or an SO 3 (M1) group, where M1 is an alkali metal or NH 4 ; R 9 is a hydrogen atom, a halogen atom, or an SO 3 (M2) group, where M2 is an alkali metal or NH 4 ; M4 is Cu or Cr; and X2 + is an alkali metal cation or NH 4 + .
Claim 5
Dependent Claim
132 words
The ink according to any one of claims 1 , 2 or 3 , wherein the xanthene dye is a dye having a structure of the general formula (III): wherein X 3 , X 4 , X 5 and X 6 are each independently a halogen atom; and Z1 is a —COO(M5) group or an —SO 3 − group, where M5 is an alkali metal or NH 4 , or of the general formula (IV): wherein R 10 and R 11 are each independently a hydrogen atom, a linear or branched alkyl group having 1 to 5 carbon atoms, a substituted or unsubstituted aryl group; and Z2 and Z3 are each independently a —COO(M6) group or an —SO 3 − group, where M6 is an alkali metal or NH 4 + .
Claim 6
Dependent Claim
28 words
The ink according to claim 1 , wherein the ink comprises the azopyrazolone dye and the xanthene dye in a proportion ranging from 50:1 to 1:2 by weight.
Claim 7
Dependent Claim
28 words
The ink according to claim 5 , wherein the ink comprises the azopyrazolone dye and the xanthene dye in a proportion ranging from 20:1 to 1:1 by weight.
Claim 8
Dependent Claim
32 words
The ink according to claim 1 , wherein the ink comprises the dyes at a total concentration ranging from 0.1 to 15% by weight based on the total weight of the ink.
Claim 9
Dependent Claim
24 words
The ink according to claim 1 , wherein the ink comprises a solvent having a boiling point ranging from 150° C. to 250° C.
Claim 10
Dependent Claim
15 words
The ink according to claim 1 , wherein the ink comprises additionally a curable resin.
Claim 11
Dependent Claim
23 words
The ink according to claim 9 , wherein the curable resin is curable by at least one of light irradiation and heat application.
Claim 12
Dependent Claim
34 words
A color filter comprising a light transmissive base plate and a red color pixel at prescribed positions on the base plate, wherein the pixel comprises a metal complex azopyrazolone dye and a xanthene dye.
Claim 13
Dependent Claim
34 words
A color filter comprising a light transmissive base plate and a red color pixel at prescribed positions on the base plate, wherein the pixel comprises a metal complex azopyrazolone dye and a xanthene dye.
Claim 14
Dependent Claim
32 words
The color filter according to claim 11 , wherein the base plate is provided with a resin layer on the surface thereof, and a part of the resin layer constitutes the pixel.
Claim 15
Dependent Claim
35 words
The color filter according to claim 11 or 12 , wherein a plurality of the pixels are provided, the pixels are separated from each other and a light-shielding layer is provided between the respective pixels.
Claim 16
Dependent Claim
16 words
The color filter according to claim 13 , wherein the light-shielding layer has a noncolorable surface.
Claim 17
Dependent Claim
54 words
The color filter according to claim 11 , wherein a plurality of the pixels are provided; the pixels are separated from each other; a light-shielding layer and a resin layer which covers the light-shielding layer are provided between the colored pixels; and the surface of the resin layer on the light-shielding layer is noncolorable.
Claim 18
Dependent Claim
131 words
The color filter according to claim 11 , wherein the metal complex azopyrazolone dye is a dye having a structure represented by the general formula (I): wherein R 1 , R 2 , R 3 and R 4 are each independently a hydrogen atom, a halogen atom, a nitro group, a linear or branched alkyl group having 1 to 5 carbon atoms, a CF 3 group, or an SO 3 (M1) group, where M1 is an alkali metal or NH 4 ; R 5 and R 6 are each independently a hydrogen atom, a halogen atom or an SO 3 (M2) group, where M2 is an alkali metal or NH 4 ; M3 is Cr, Ni or Co; and X1 + is an alkali metal cation or NH 4 + .
Claim 19
Dependent Claim
118 words
The color filter according to claim 11 , wherein the metal complex azopyrazolone dye is a dye having a structure of the general formula (II): wherein R 7 and R 8 are each independently a hydrogen atom, a halogen atom, a nitro group, a linear or branched alkyl group having 1 to 5 carbon atoms, a CF 3 group or an SO 3 (M1) group, where M1 is an alkali metal or NH 4 ; R 9 is a hydrogen atom, a halogen atom or an SO 3 (M2) group, where M2 is an alkali metal or NH 4 ; M4 is Cu or Cr; and X2 + is an alkali metal cation or NH 4 + .
Claim 20
Dependent Claim
126 words
The color filter according to claim 11 , wherein the xanthene dye is a dye having a structure of the general formula (III): wherein X 3 , X 4 , X 5 and X 6 are each independently a halogen atom; and Z1 is a —COO(M5) group or an —SO 3 − group, where M5 is an alkali metal or NH 4 , or of the general formula (IV): wherein R 10 and R 11 are each independently a hydrogen atom, a linear or branched alkyl group having 1 to 5 carbon atoms, a substituted or unsubstituted aryl group; and Z2 and Z3 are each independently a —COO(M6) group or an —SO 3 − group, where M6 is an alkali metal or NH 4 + .
Claim 21
Dependent Claim
27 words
The color filter according to claim 11 , wherein the ink comprises the azopyrazolone dye and the xanthene dye in a proportion ranging from 50:1 to 1:2.
Claim 22
Dependent Claim
27 words
The color filter according to claim 19 , wherein the ink comprises the azopyrazolone dye and the xanthene dye in a proportion ranging from 20:1 to 1:1.
Claim 23
Dependent Claim
42 words
A liquid crystal panel comprising: a color filter set forth in claim 11 , and a panel base plate placed in opposition to the color filter, wherein a liquid crystal compound is enclosed between the color filter and the panel base plate.
Claim 24
Dependent Claim
44 words
The liquid crystal panel according to claim 21 , wherein an electrode for controlling an orientation of the liquid crystal compound is provided on a reverse side surface of a light-transmissive base plate of the color filter, to a surface where colored pixels exist.
Claim 25
Dependent Claim
18 words
A computer provided with the liquid crystal panel set forth in claim 21 as an image display device.
Claim 26
Dependent Claim
39 words
A process for producing a color filter comprising the step of: ejecting an ink set forth in claim 1 onto a light-transmissive base plate by an ink-jet system to deposit the ink on prescribed positions, thereby forming colored pixels.
Claim 27
Dependent Claim
25 words
The process for producing a color filter according to claim 24 , wherein the light-transmissive base plate has a resin layer on the surface thereof.
Claim 28
Dependent Claim
29 words
The process for producing a color filter according to claim 25 , wherein a material for forming the resin layer is a polymer comprising a water-soluble acrylic monomer unit.
Claim 29
Dependent Claim
25 words
The process for producing a color filter according to claim 25 , wherein a material for forming the resin layer comprises a cellulosic water-soluble polymer.
Claim 30
Dependent Claim
57 words
A process for producing a color filter comprising the steps of: ejecting an ink set forth in claim 9 onto a light-transmissive base plate by an ink-jet system to deposit the ink on a prescribed position on the surface of the base plate, and subsequently curing a curable resin in the ink to form a color pixel.
Claim 31
Dependent Claim
35 words
The process for producing a color filter according to claim 24 , wherein the light-transmissive base plate has a light-shielding layer which separates pixels formed on the surface of the base plate from each other.
Claim 32
Dependent Claim
52 words
The process for producing a color filter according to claim 24 , wherein the light-transmissive base plate comprises a light-shielding layer, which separates pixels formed on the surface of the base plate from each other, and a resin layer covering the light-shielding layer, the resin layer on the light-shielding layer being noncolorable.
Claim 33
Dependent Claim
35 words
The process for producing a color filter according to claim 24 , wherein the process further comprises the steps of: forming a curable resin layer to cover the colored pixels, and curing the curable resin.
Claim 34
Dependent Claim
30 words
The process for producing a color filter according to claim 31 , wherein the curable resin is cured by application of at least one of light energy and heat energy.
References Cited (Backward Citations)
JPS5975205A
Cited
US4554555A
Cited
US4804411A
Cited
US4864324A
Cited
JPS63235901A
Cited
JPH01217302A
Cited
US5135571A
Cited
US5074914A
Cited
US5139573A
Cited
US5231417A
Cited
US5110356A
Cited
US5216437A
Cited
US5135570A
Cited
US5123960A
Cited
JPH04123005A
Cited
EP0634457A1
Cited
JPH07242651A
Cited
US5593757A
Cited
EP0703471A2
Cited
US5811209A
Cited
JPH08327811A
Cited
JPH10288708A
Cited
US5958118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-19 | 2004-09-18 | 2005-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-19 | 2008-09-18 | 2009-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-19 | 2012-09-18 | 2013-03-20 | $7700.00 | Window Closed / Lapsed |