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US 9,598,815 B2Granted
Reducing agent, ink-jet recording apparatus, discharge printing method, image forming method, reducing agent stabilizing method, and reducing agent enhancing method
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsGoro Okada, Kunihiro Fujita
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Abstract
The present invention relates to a reducing agent containing thiourea dioxide. The reducing agent contains thiourea. The reducing agent contains carboxylate. The carboxylate includes at least one of aliphatic monocarboxylate, an aliphatic monocarboxylic acid derivative salt, and malonate. Therefore, the reducing agent exerts a good reducing ability and a good long-term stability effect.
Claims16
A reducing agent comprising:
- thiourea dioxide;
- and
- carboxylate, wherein
- the carboxylate comprises at least one selected from the group consisting of aliphatic monocarboxylate, an aliphatic monocarboxylic acid derivative salt, and malonate;
- and
- wherein a pH of the reducing agent is in a range from pH8 to pH10.
3 more elements
A method for stabilizing a reducing agent that comprises thiourea dioxide, comprising:
- adding carboxylate, wherein the carboxylate is at least one selected from the group consisting of aliphatic monocarboxylate, aliphatic monocarboxylic acid derivative salt, and malonate;
- and wherein a pH of the reducing agent is in a range from pH8 to pH 10.
A method for enhancing a reducing agent that comprises thiourea dioxide, comprising:
- adding carboxylate;
- wherein the carboxylate is at least one selected from the group consisting of aliphatic monocarboxylate, aliphatic monocarboxylic acid derivative salt, and malonate;
- and wherein a pH of the reducing agent is in a range from pH8 to pH10.
Dependencies are inferred from the claim text.