EP0524372A2
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EP
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Azo compounds, inks containing same, and recording method and instrument using the same
Assignee: Canon Inc
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Filing: 1992-03-30
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Granted: —
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Expires: 2012-03-30
Abstract
Abstract Disclosed herein is an azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion. An ink containing this compound is suitable for use in an ink-jet recording.
Inventors
- 👤 Tsuyoshi C/O Canon Kabushiki Kaisha Eida
- 👤 Mayumi C/O Canon Kabushiki Kaisha Yamamoto
- 👤 Takao C/O Canon Kabushiki Kaisha Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 15:15
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; C09B; C09B31/00; C09B31/16; C09B31/18
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
75 words
An azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 2
Dependent Claim
75 words
An azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 3
Dependent Claim
37 words
The azo compound according to claim 1, which is selected from the group consisting of the following compounds No. 1 through No. 12: wherein M means an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 4
Dependent Claim
84 words
A black dye composition comprising, as a principal component, an azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 5
Dependent Claim
84 words
A black dye composition comprising, as a principal component, an azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 6
Dependent Claim
31 words
The black dye composition according to claim 3, which comprises, as a principal component, an azo compound selected from the group consisting of the following compounds No. 1 through No. 12:
Claim 7
Dependent Claim
14 words
wherein M means an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 8
Dependent Claim
14 words
wherein M means an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 9
Dependent Claim
102 words
An ink comprising a recording agent and a liquid medium dissolving or dispersing the recording agent therein, characterized in that the ink contains, as the recording agent, an azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 10
Dependent Claim
102 words
An ink comprising a recording agent and a liquid medium dissolving or dispersing the recording agent therein, characterized in that the ink contains, as the recording agent, an azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 11
Dependent Claim
43 words
The ink according to claim 5, which contains, as the recording agent, at least one compound selected from the group consisting of the following compounds No. 1 through No. 12: wherein M means an alkali metal atom, or ammonium or organic ammonium ion.
Claim 12
Dependent Claim
17 words
The ink according to claim 5, wherein the pH of the ink ranges from 4 to 10.
Claim 13
Dependent Claim
29 words
The ink according to claim 5, wherein the recording agent is contained in an amount of 0.1 to 15 % by weight of the total weight of the ink.
Claim 14
Dependent Claim
21 words
The ink according to claim 5, wherein the liquid medium comprises a mixed solvent of water and a water-soluble organic solvent.
Claim 15
Dependent Claim
28 words
The ink according to claim 9, wherein the water is contained in an amount of 10 to 97.5 % by weight of the total weight of the ink.
Claim 16
Dependent Claim
30 words
The ink according to claim 9, wherein the water-soluble organic solvent is contained in an amount of 2 to 80 % by weight of the total weight of the ink.
Claim 17
Dependent Claim
14 words
The ink according to claim 9, wherein the water-soluble organic solvent comprises (a) glycol(s).
Claim 18
Dependent Claim
14 words
The ink according to claim 12, wherein the glycol is diethylene glycol and/or thiodiglycol.
Claim 19
Dependent Claim
12 words
The ink according to claim 5, which is used for ink-jet recording.
Claim 20
Dependent Claim
19 words
The ink according to claim 14, which comprises at least a recording agent, a water-soluble organic solvent and water.
Claim 21
Dependent Claim
14 words
The ink according to claim 15, wherein the water-soluble organic solvent comprises (a) glycol(s).
Claim 22
Dependent Claim
14 words
The ink according to claim 16, wherein the glycol is diethylene glycol and/or thiodiglycol.
Claim 23
Dependent Claim
13 words
The ink according to claim 17, which comprises, as additives, 2-propanol and/or triethanolamine.
Claim 24
Dependent Claim
18 words
The ink according to claim 18, which comprises at least a recording agent, water, thiodiglycol, 2-propanol and triethanolamine.
Claim 25
Dependent Claim
28 words
An ink-jet recording method for conducting recording by applying droplets of an ink onto a recording material, which comprises using the ink as set forth in claim 5.
Claim 26
Dependent Claim
20 words
An ink-jet recording method according to claim 20, which comprises applying thermal energy to the ink to eject ink droplets.
Claim 27
Dependent Claim
20 words
An ink-jet recording method according to claim 20, wherein the recording material is a non-coated paper or coated paper sheet.
Claim 28
Dependent Claim
37 words
A recording unit equipped with an ink container part containing an ink therein and a head for ejecting the ink as its droplets, characterized in that said ink is the ink as set forth in claim 5.
Claim 29
Dependent Claim
26 words
The recording unit according to claim 23, wherein the head is a head in which thermal energy is applied on the ink to eject its droplets.
Claim 30
Dependent Claim
13 words
The recording unit according to claim 23, which is used for ink-jet recording.
Claim 31
Dependent Claim
32 words
An ink-jet recording method comprising conducting recording by applying droplets of an ink onto a recording material using the recording unit as set forth in any one of claims 23 to 25.
Claim 32
Dependent Claim
27 words
An ink cartridge equipped with an ink container part containing an ink therein, characterized in that said ink is the ink as set forth in claim 5.
Claim 33
Dependent Claim
16 words
The ink cartridge according to claim 27, wherein the ink container part has a bag-like structure.
Claim 34
Dependent Claim
27 words
The ink cartridge according to claim 27, wherein the ink container part is made of a polyolefin at its surface with which the ink comes into contact.
Claim 35
Dependent Claim
13 words
The ink cartridge according to claim 27, which is used for ink-jet recording.
Claim 36
Dependent Claim
32 words
An ink-jet recording method comprising conducting recording by applying droplets of an ink onto a recording material using the ink cartridge as set forth in any one of claims 27 to 30.
Claim 37
Dependent Claim
34 words
An ink-jet recording apparatus equipped with the recording unit as set forth in any one of claims 23 to 25, characterized in that said ink is the ink as set forth in claim 5.
Claim 38
Dependent Claim
17 words
The ink-jet recording apparatus according to claim 32, which comprises further a carriage for the recording unit.
Claim 39
Dependent Claim
23 words
An ink-jet recording apparatus comprising the ink cartridge as set forth in any one of claims 27 to 30 and a recording head.
Claim 40
Dependent Claim
28 words
The ink-jet recording apparatus according to claim 34, which comprises further an ink feed system for feeding an ink contained in the ink cartridge to the recording head.
Claim 41
Dependent Claim
27 words
The ink-jet recording apparatus according to claim 34, the recording head is a head in which thermal energy is applied to the ink to eject its droplets.
Claim 42
Dependent Claim
10 words
Use of an azo compound represented by the general formula
Claim 43
Dependent Claim
10 words
Use of an azo compound represented by the general formula
Claim 44
Dependent Claim
69 words
wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion, for inks.
Claim 45
Dependent Claim
69 words
wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion, for inks.
Claim 46
Dependent Claim
41 words
Use of the azo compound according to claim 37, which is selected from the group consisting of the following compounds No. 1 through No. 12: wherein M means an alkali metal atom, or an ammonium or organic ammonium ion, for inks.
Claim 47
Dependent Claim
107 words
Use of an ink comprising a recording agent and a liquid medium dissolving or dispersing the recording agent therein, characterized in that the ink contains, as the recording agent, an azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion, for ink-jet recording.
Claim 48
Dependent Claim
107 words
Use of an ink comprising a recording agent and a liquid medium dissolving or dispersing the recording agent therein, characterized in that the ink contains, as the recording agent, an azo compound represented by the general formula wherein Ri, R 2 and R 3 mean individually a group or atom selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion, for ink-jet recording.
Claim 49
Dependent Claim
49 words
Use of the ink according to claim 39, which contains, as the recording agent, at least one compound selected from the group consisting of the following compounds No. 1 through No. 12: wherein M means an alkali metal atom, or an ammonium or organic ammonium ion, for ink-jet recording.
References Cited (Backward Citations)
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