US4599112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording liquid
Assignee: Canon Inc
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Filing: 1984-10-31
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Granted: 1986-07-08
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Expires: 2004-10-31
Abstract
Abstract A recording liquid containing as a coloring component a copper phthalocyanine dye having at least one alkali metal sulfonate substituent is provided. The recording liquid is characterized in that the ratio of the integrated peak areas (A/B) in a liquid chromatogram of said dye is at least 1/6, wherein, provided that the retention time of the main peak is taken as 1.00, A and B represent the integrated peak area of the relative retention time of from 0 to 0.80 and that of from 0.85 to 4.00, respectively.
Inventors
- 👤 Yasumasa Yokoyama
- 👤 Tomoko Komori
- 👤 Tsuyoshi Eida
- 👤 Shoji Koike
- 👤 Masatsune Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:19
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
89 words
A recording liquid containing as a coloring component a copper phthalocyanine dye having at least one alkali metal sulfonate substituent, characterized in that the ratio of the integrated peak areas (A/B) in a liquid chromatogram of said dye is at least 1/6, wherein, provided that the retention time of the main peak is taken as 1.00, A represents the integrated peak area of the relative retention time of from 0 to 0.80, and B represents the integrated peak area of the relative retention time of from 0.85 to 4.00.
Claim 2
Dependent Claim
89 words
A recording liquid containing as a coloring component a copper phthalocyanine dye having at least one alkali metal sulfonate substituent, characterized in that the ratio of the integrated peak areas (A/B) in a liquid chromatogram of said dye is at least 1/6, wherein, provided that the retention time of the main peak is taken as 1.00, A represents the integrated peak area of the relative retention time of from 0 to 0.80, and B represents the integrated peak area of the relative retention time of from 0.85 to 4.00.
Claim 3
Dependent Claim
14 words
The recording liquid of claim 1, wherein the ratio A/B is at least 1/4.
Claim 4
Dependent Claim
28 words
The recording liquid of claim 1, wherein said coloring component is contained in an amount of 0.5-20% by weight based on the entire weight of the recording liquid.
Claim 5
Dependent Claim
18 words
The recording liquid of claim 1, further comprising water and a water-miscible organic solvent as liquid medium components.
Claim 6
Independent Claim
106 words
A method for recording comprising discharging a recording liquid containing as a coloring component a copper phthalocyanine dye having at least one alkali metal sulfonate substituent, characterized in that the ratio of the integrated peak areas (A/B) in a liquid chromatogram of said dye is at least 1/6, wherein, provided that the retention time of the main peak is taken as 1.00, A represents the integrated peak area of the relative retention time of from 0 to 0.80, and B represents the integrated peak area of the relative retention time of from 0.85 to 4.00, through a fine nozzle onto a surface of a recording medium.
Claim 7
Independent Claim
106 words
A method for recording comprising discharging a recording liquid containing as a coloring component a copper phthalocyanine dye having at least one alkali metal sulfonate substituent, characterized in that the ratio of the integrated peak areas (A/B) in a liquid chromatogram of said dye is at least 1/6, wherein, provided that the retention time of the main peak is taken as 1.00, A represents the integrated peak area of the relative retention time of from 0 to 0.80, and B represents the integrated peak area of the relative retention time of from 0.85 to 4.00, through a fine nozzle onto a surface of a recording medium.
References Cited (Backward Citations)
US3889271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |