EP0121993A2
Expired / Lapsed
EP
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Recording liquid
Assignee: Canon Inc
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Filing: 1984-02-17
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Granted: —
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Expires: 2004-02-17
Abstract
Abstract In a recording liquid comprising, as essential component, a colorant in an amount necessary to image formation, water, and a water-miscible organic solvent, said recording liquid is characterized in that the total number of colonies in the Ames test thereof is not more than four times that of the control test using sterilized water.
Inventors
- 👤 Masahiro Haruta
- 👤 Masatsune Kobayashi
- 👤 Tokuya Ohta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 20:03
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
59 words
A recording liquid comprising, as essential components, a colorant in an amount necessary to image formation, water, and a water-miscible organic solvent, said recording liquid being characterised in that the total number of colonies produced by the recording liquid in response to the Ames test is not more than four times that of a control test using sterilised water.
Claim 2
Dependent Claim
59 words
A recording liquid comprising, as essential components, a colorant in an amount necessary to image formation, water, and a water-miscible organic solvent, said recording liquid being characterised in that the total number of colonies produced by the recording liquid in response to the Ames test is not more than four times that of a control test using sterilised water.
Claim 3
Dependent Claim
31 words
A recording liquid according to claim 1 characterised in that the total number of colonies in said test is not more than triple that of the control test using sterilised water.
Claim 4
Dependent Claim
18 words
A recording liquid according to claim 1 or claim 2 wherein the colorant content is 1-20% by weight.
Claim 5
Dependent Claim
20 words
A recording liquid according to any preceding claim wherein the content of the water-miscible organic solvent is 5-95% by weight.
Claim 6
Dependent Claim
16 words
A recording liquid according to any preceding claim wherein the water content is 10-90% by weight.
Claim 7
Dependent Claim
22 words
A recording liquid according to any preceding claim wherein the Ames test is carried out using strain TA 98 of salmonella typhimurium.
Claim 8
Dependent Claim
21 words
A recording liquid according to any preceding claim wherein the dye is one of dyes A to G as indentified herein.
Claim 9
Independent Claim
22 words
A method of prognosticating the flow of properties of a recording liquid after prolonged storage characterised by measuring its toxicity to microorganisms.
Claim 10
Independent Claim
22 words
A method of prognosticating the flow of properties of a recording liquid after prolonged storage characterised by measuring its toxicity to microorganisms.
Claim 11
Dependent Claim
16 words
A method according to claim 8 wherein the recording liquid is subjected to the Ames test.
Claim 12
Dependent Claim
46 words
A method according to claim 8 wherein the recording liquid is selected on the basis that the total number of colonies produced by the recording liquid in response to the Ames test is not more than four times that of a control test using sterilised water.
References Cited (Backward Citations)
No citation records indexed.
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