EP0697445A2
Expired / Lapsed
EP
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Liquid composition and ink set, and image-forming process and apparatus using the same
Assignee: Canon Inc
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Filing: 1995-07-07
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Granted: —
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Expires: 2015-07-07
Abstract
Abstract Disclosed herein is a liquid composition comprising a cationic substance, wherein the liquid composition contains polyallylamine as the cationic substance, and glycerol, the essential component as a water-soluble organic solvent, in an amount of not less than 5 % by weight based on the total weight of the liquid composition.
Inventors
- 👤 Katsuhiko Takahashi
- 👤 Yutaka Kurabayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 17:45
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; C09D11/54
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
47 words
A liquid composition comprising a cationic substance, wherein the liquid composition contains polyallylamine as the cationic substance, and glycerol, the essential component as a water-soluble organic solvent, in an amount of not less than 5 % by weight based on the total weight of the liquid composition.
Claim 2
Dependent Claim
27 words
The liquid composition according to Claim 1, further comprising at least one water-soluble organic solvent selected from the group consisting of ethylene glycol, diethylene glycol and thiodiglycol.
Claim 3
Dependent Claim
53 words
The liquid composition according to Claim 1, wherein the cationic substance has at least one peak in a molecular weight region of not higher than 1,000 and in a molecular weight region of not lower than 1,500 but not higher than 10,000 in its molecular weight distribution as measured by means of GPC.
Claim 4
Dependent Claim
13 words
The liquid composition according to Claim 3, wherein the cationic substance is polyallylamine.
Claim 5
Dependent Claim
16 words
The liquid composition according to Claim 1, further comprising a cationic surfactant as the cationic substance.
Claim 6
Dependent Claim
78 words
The liquid composition according to Claim 3, wherein the cationic substance having at least one peak in the molecular weight region of not higher than 1,000 in the molecular weight distribution as determined by means of GPC is a cationic surfactant, and the cationic substance having at least one peak in the molecular weight region of not lower than 1,500 but not higher than 10,000 in the molecular weight distribution as determined by means of GPC is polyallylamine.
Claim 7
Dependent Claim
10 words
The liquid composition according to Claim 1, further comprising water.
Claim 8
Dependent Claim
32 words
The liquid composition according to Claim 1, wherein the cationic substance is contained in a range of from 0.05 to 20 % by weight based on the total weight of the composition.
Claim 9
Dependent Claim
33 words
The liquid composition according to Claim 1, wherein the water-soluble organic solvent is contained in a range of from 5 to 60 % by weight based on the total weight of the composition.
Claim 10
Dependent Claim
19 words
The liquid composition according to Claim 1, wherein the polyallylamine is in the form of the hydrochloride or acetate.
Claim 11
Dependent Claim
32 words
An ink set comprising in combination the liquid composition according to any one of Claims 1 to 10 and at least one of yellow, magenta, cyan, black, red, blue and green inks.
Claim 12
Dependent Claim
27 words
An ink set comprising in combination the liquid composition according to any one of Claims 1 to 10 and three inks of yellow, magenta and cyan colors.
Claim 13
Dependent Claim
28 words
An ink set comprising in combination the liquid composition according to any one of Claims 1 to 10 and four inks of yellow, magenta, cyan and black colors.
Claim 14
Dependent Claim
19 words
The ink set according to any one of Claims 11 to 13, wherein the inks contain an anionic compound.
Claim 15
Dependent Claim
23 words
The ink set according to any one of Claims 11 to 13, wherein the inks contain a water-soluble dye having an anionic group.
Claim 16
Dependent Claim
22 words
The ink set according to any one of Claims 11 to 13, wherein the inks contain a pigment and an anionic compound.
Claim 17
Dependent Claim
52 words
A process of forming an image, which comprises the steps of (A) applying the liquid composition according to any one of Claims 1 to 10 to at least an image-forming region of a recording medium and (B) applying an ink comprising an anionic compound to the recording medium by an ink-jet system.
Claim 18
Dependent Claim
17 words
The image-forming process according to Claim 17, wherein the ink-jet system is an On-Demand type ink-jet system.
Claim 19
Dependent Claim
21 words
The image-forming process according to claim 17, wherein the liquid composition is applied to the recording medium by an ink-jet system.
Claim 20
Dependent Claim
29 words
The image-forming process according to any one of Claims 17 to 19, wherein the ink-jet system is an ink-jet system in which thermal energy is applied to the ink.
Claim 21
Dependent Claim
18 words
The image-forming process according to Claim 17, wherein the step (A) is conducted prior to the step (B).
Claim 22
Dependent Claim
18 words
The image-forming process according to Claim 17, wherein the step (A) is conducted subsequently to the step (B).
Claim 23
Dependent Claim
21 words
An image forming apparatus comprising the ink set according to any one of Claims 11 to 16 and an ink-jet means.
Claim 24
Dependent Claim
52 words
An image forming apparatus comprising the first recording unit equipped with a container part containing the liquid composition according to any one of Claims 1 to 10 and an ejection means therefor, and the second recording unit equipped with container parts separately containing inks comprising an anionic compound and ejection means therefor.
Claim 25
Dependent Claim
16 words
The image forming apparatus according to Claim 24, wherein the ejection means is an ink-jet means.
Claim 26
Dependent Claim
32 words
The image forming apparatus according to Claim 23 or 25, wherein the ink-jet means is a means in which thermal energy is applied to the ink to form droplets of the ink.
Claim 27
Dependent Claim
18 words
Use of the liquid composition according to any one of Claims 1 to 10 for formation of images.
Claim 28
Dependent Claim
17 words
Use of the ink set according to any one of Claims 11 to 16 for ink-jet systems.
References Cited (Backward Citations)
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