EP0359376A2
Expired / Lapsed
EP
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Recording liquid and ink-jet recording process using same
Assignee: Canon Inc
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Filing: 1989-07-25
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Granted: —
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Expires: 2009-07-25
Abstract
Abstract A recording liquid comprises dyes and a liquid medium. The dyes comprises a black dye and a Toning water-soluble dye in combination. The black dye is selected from the group consisting of C.I. Food Black 1, C.I. Acid Black 140 and C.I. Acid Balck 187.
Inventors
- 👤 Shoji Koike
- 👤 Tsuyoshi Eida
- 👤 Takao Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 03:07
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
50 words
A recording liquid comprising dyes and a liquid medium for dissolving the dye, wherein said dyes comprises a black dye and a toning water-soluble dye in combination, said black dye being selected from the group consisting of C.I. Food Black 1, C.I. Acid Black 140 and C.I. Acid Black 187.
Claim 2
Dependent Claim
50 words
A recording liquid comprising dyes and a liquid medium for dissolving the dye, wherein said dyes comprises a black dye and a toning water-soluble dye in combination, said black dye being selected from the group consisting of C.I. Food Black 1, C.I. Acid Black 140 and C.I. Acid Black 187.
Claim 3
Dependent Claim
34 words
A recording liquid according to Claim 1, wherein said black dye is contained in a proportion of from 40 to 95 % by weight based on all the dyes contained in said recording solution.
Claim 4
Dependent Claim
24 words
A recording liquid according to Claim 1, wherein said toning water-soluble dye comprises at least one of a magenta dye and a yellow dye.
Claim 5
Dependent Claim
18 words
A recording liquid according to Claim 1, wherein said liquid medium comprises water and a water-soluble organic solvent.
Claim 6
Dependent Claim
33 words
A recording liquid according to Claim 4, wherein said water-soluble organic solvent is selected from the group consisting of glycerol and polyethylene oxide having a degree of polymerization of from 2 to 6.
Claim 7
Dependent Claim
35 words
A recording liquid according to Claim 4, wherein said water soluble organic solvent is contained in an amount of from 2 to 65 % by weight based on the total weight of the recording liquid.
Claim 8
Dependent Claim
31 words
A recording liquid according to Claim 3, wherein said yellow dye is selected from the group consisting of C.I. Direct Yellow 86, C.I. Direct Yellow 142 and C.I. Acid Yellow 23.
Claim 9
Dependent Claim
105 words
A recording liquid according to Claim 3, wherein said magenta dye is selected from the group consisting of C.I. Direct Red 227 and a dye represented by the following Formula (A): wherein Y represents a hydrogen atom, a methyl group, a methoxy group, an acetylamino group or a nitro group, or Y forms a benzene ring together with the carbon atom at the 3-position of the benzene ring B; X represents an acetyl group, a benzoyl group, a p-toluenesulfonyl group or a 4-chloro-6-hydroxy-1,3,5-triazin-2-yl group; and M¹, M² and M³ each represent a base selected from the group consisting of an alkali metal, ammonium and amines.
Claim 10
Dependent Claim
37 words
An ink-jet recording process comprising making a record by applying droplets of a recording liquid to a recording medium having a pigment-coated layer, wherein said recording liquid is as claimed in any of Claims 1 to 8.
Claim 11
Dependent Claim
25 words
An ink-jet recording process according to Claim 9, wherein said pigment-coated layer comprises silica having a specific surface area of from 35 to 650 m²/g.
Claim 12
Dependent Claim
66 words
A recording liquid comprising dyes and a liquid medium for dissolving the dye, wherein said dyes comprises a black dye, a magenta dye and a yellow dye, said black dye being selected from the group consisting of C.I. Food Black 1, C.I. Acid Black 140 and C.I. Acid Black 187, and contained in a proportion of from 40 to 95% by weight based on the dyes.
Claim 13
Dependent Claim
66 words
A recording liquid comprising dyes and a liquid medium for dissolving the dye, wherein said dyes comprises a black dye, a magenta dye and a yellow dye, said black dye being selected from the group consisting of C.I. Food Black 1, C.I. Acid Black 140 and C.I. Acid Black 187, and contained in a proportion of from 40 to 95% by weight based on the dyes.
Claim 14
Dependent Claim
20 words
A recording liquid according to Claim 11, and having the features set out in any of Claims 4 to 8.
Claim 15
Dependent Claim
22 words
A recording liquid comprising at least one black dye and at least one other dye that enhances the blackness of the liquid.
Claim 16
Dependent Claim
22 words
A recording liquid comprising at least one black dye and at least one other dye that enhances the blackness of the liquid.
References Cited (Backward Citations)
No citation records indexed.
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