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EP0661168A2
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Recording medium and image-forming method employing the same
Assignee: Canon Inc
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Filing: 1994-12-27
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Granted: —
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Expires: 2014-12-27
Abstract
Abstract Provided is a recording method for image formation on a recording medium by application thereon of an ink containing a water-soluble dye having an anionic group or a cationic group in the molecule: the recording medium comprising a substance having an ionic group counter to the anionic or cationic group of the water-soluble dye and having molecular weight of not higher than 1,000, and a polymeric substance having molecular weight of not lower than 2,000.
Inventors
- 👤 Mamoru C/O Canon Kabushiki Kaisha Sakaki
- 👤 Eiichi C/O Canon Kabushiki Kaisha Suzuki
- 👤 Masato C/O Canon Kabushiki Kaisha Katayama
- 👤 Yutaka C/O Canon Kabushiki Kaisha Kurabayashi
- 👤 Akio C/O Canon Kabushiki Kaisha Kashiwazaki
- 👤 Mifune C/O Canon Kabushiki Kaisha Hirose
- 👤 Katsuhiko C/O Canon Kabushiki Kaisha Takahashi
- 👤 Kenichi C/O Canon Kabushiki Kaisha Moriya
- 👤 Yuko C/O Canon Kabushiki Kaisha Nishioka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:26
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; C; C09; C09D; C09D11/00; C09D11/30; B41M5/502; B41M5/508; B41M5/5218; B41M5/5245; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
73 words
A recording method for image formation on a recording medium by application thereon of an ink containing a water-soluble dye having an anionic group or a cationic group in the molecule: the recording medium comprising a substance having an ionic group counter to the anionic or cationic group of the water-soluble dye and having molecular weight of not higher than 1,000, and a polymeric substance having molecular weight of not lower than 2,000.
Claim 2
Dependent Claim
67 words
The recording method according to claim 1, wherein the ink contains a water-soluble dye having an anionic group, and the recording medium contains a substance having molecular weight of not higher than 1,000 selected from the group consisting of organic cationic compounds, basic polyaluminum chloride, and a basic aluminum salt of an organic acid; and a cationic polymeric substance having molecular weight of not lower than 2,000.
Claim 3
Dependent Claim
48 words
A recording medium, comprising a substance having molecular weight of not higher than 1,000 selected from the group consisting of organic cationic substances, basic polyaluminum chloride, and a basic aluminum salt of an organic acid; and a cationic polymeric substance having molecular weight of not less than 2,000.
Claim 4
Dependent Claim
19 words
The recording medium according to claim 3, wherein the polymeric substance has molecular weight of from 2,000 to 10,000.
Claim 5
Dependent Claim
16 words
The recording medium according to claim 3, wherein polyallylamine is employed as the cationic polymeric substance.
Claim 6
Dependent Claim
21 words
The recording medium according to claim 3, wherein aluminum lactate is employed as the basic aluminum salt of an organic acid.
Claim 7
Dependent Claim
21 words
The recording medium according to claim 3, wherein the recording medium has a basis weight ranging from 50 to 150 g/m².
Claim 8
Dependent Claim
26 words
The recording medium according to claim 3, wherein the total amount of the organic cationic substance and the polymeric substance ranges from 0.05 to 7 g/m².
Claim 9
Dependent Claim
26 words
The recording medium according to claim 3, wherein the total amount of the organic cationic substance and the polymeric substance ranges from 0.3 to 5 g/m².
Claim 10
Dependent Claim
31 words
The recording medium according to claim 3, wherein the component ratio of the organic cationic substance to the polymeric substance ranges from 100 : 1 to 1 : 20 by weight.
Claim 11
Dependent Claim
31 words
The recording medium according to claim 3, wherein the component ratio of the basic polyaluminum chloride to the polymeric substance ranges from 8 : 2 to 0.5 : 9.5 by weight.
Claim 12
Dependent Claim
31 words
The recording medium according to claim 3, wherein the component ratio of the basic polyaluminum chloride to the polymeric substance ranges from 5 : 5 to 1 : 9 by weight.
Claim 13
Dependent Claim
39 words
The recording medium according to claim 3, wherein the recording medium is a recording paper sheet formed by impregnation of the cationic substance and the polymeric substance into a sheet material composed of a fiber material and a filler.
Claim 14
Dependent Claim
42 words
The recording medium according to claim 3, wherein the recording medium is a recording paper sheet formed by application of the cationic substance and the polymeric substance onto the surface of a sheet material composed of a fiber material and a filler.
Claim 15
Dependent Claim
55 words
The recording medium according to claim 3, wherein the recording medium is mainly composed of a fiber material and a filler and contains therein at least a pigment in addition to the cationic substance and the polymeric substance, and the fiber material is mixed with the pigment and is partially exposed on the surface thereof.
Claim 16
Dependent Claim
31 words
The recording medium according to claim 3, wherein the cationic substance and the polymeric substance is applied on a surface of a plastic base material to form an ink receiving layer.
Claim 17
Dependent Claim
23 words
The recording medium according to claim 16, wherein the recording medium has a basis weight ranging from 50 to 5,000 g/m² in total.
Claim 18
Dependent Claim
22 words
The recording medium according to claim 16, wherein the ink receiving layer has a basis weight ranging from 0.2 to 50 g/m².
Claim 19
Dependent Claim
32 words
The recording medium according to claim 16, wherein the total amount of the cationic substance and the polymeric substance ranges from 0.005 to 70 % by weight of the ink receiving layer.
Claim 20
Dependent Claim
29 words
The recording medium according to claim 16, wherein the ratio of the cationic substance to the polymeric substance ranges from 20 : 1 to 1 : 20 by weight.
Claim 21
Dependent Claim
33 words
An image-forming method, comprising applying an ink containing at least a water-soluble dye having an anionic group in the molecule onto a recording medium specified in any one of claims 3 to 20.
Claim 22
Dependent Claim
27 words
The image-forming method according to claim 21, wherein the ink is ejected from an ejection orifice as droplets onto the recording medium in accordance with recording signals.
Claim 23
Dependent Claim
16 words
The image-forming method according to claim 22, wherein the ink is ejected by an ink-jet system.
Claim 24
Dependent Claim
15 words
The image-forming method according to claim 21, wherein the ink further contains an anionic compound.
Claim 25
Dependent Claim
24 words
The image-forming method according to claim 21, wherein three colors of inks of yellow, cyan, magenta, and black ink are employed as the ink.
References Cited (Backward Citations)
No citation records indexed.
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