Abstract A novel impulse ink jet ink for use with an ink jet system having material subject to corrosion by said ink is disclosed. The subject ink comprises a fatty acid vehicle, a colorant, and amounts of anti-oxidant, preferably an alkylated hydroquinone, which are effective to substantially reduce the rate of corrosion on metallic parts of the system. The preferred anti-oxidant, which comprises 0.1-5 wt % of the ink, is an alkylated hydroquinone, particularly butylated hydroquinone. The subject ink preferably comprises an oleic acid vehicle, and a vehicle additive selected from the group consisting of aromatic alcohols, aromatic ethers, dimethylsulfoxides, alkyl pyrrolidones, methoxy- and ethoxy- triglycols, aliphatic ketones, and mixtures thereof. The corrosive nature of such inks is potentiated by the relatively high percentages of the vehicle-soluble dyes in the ink. Such dyes are present in amounts up to 20 wt % of the ink.
Inventors
👤 An-Chung R. Lin
👤 Richard G. Whitfield
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 14:54
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
An impulse ink jet system comprising: (a) an impulse ink jet comprising 10-97 weight percent of at least one C 8 -C 26 fatty acid, 3-20 weight percent dye and 10-90 weight percent solvent additive selected from the group consisting of aromatic alcohols, aromatic ethers, dimethyl sulfoxides, alkyl pyrrolidones, methoxy- and ethoxy- triglycols, polyethylene glycols, aliphatic ketones, and mixtures thereof; and (b) an ink delivery means for supplying ink to an impulse ink jet head, said means comprising metal surfaces in contact with said ink and subject to corrosion thereby;
Claim 2
Dependent Claim
90 words
An impulse ink jet system comprising: (a) an impulse ink jet comprising 10-97 weight percent of at least one C 8 -C 26 fatty acid, 3-20 weight percent dye and 10-90 weight percent solvent additive selected from the group consisting of aromatic alcohols, aromatic ethers, dimethyl sulfoxides, alkyl pyrrolidones, methoxy- and ethoxy- triglycols, polyethylene glycols, aliphatic ketones, and mixtures thereof; and (b) an ink delivery means for supplying ink to an impulse ink jet head, said means comprising metal surfaces in contact with said ink and subject to corrosion thereby;
Claim 3
Dependent Claim
41 words
said ink further comprising 0.1-5 weight percent anti-oxidant in amounts sufficient to reduce the rate of corrosion of said metal surfaces by said ink by at least 10% as compared to the rate of corrosion of said ink without said anti-oxidant.
Claim 4
Dependent Claim
41 words
said ink further comprising 0.1-5 weight percent anti-oxidant in amounts sufficient to reduce the rate of corrosion of said metal surfaces by said ink by at least 10% as compared to the rate of corrosion of said ink without said anti-oxidant.
Claim 5
Dependent Claim
12 words
The system of claim 1 wherein said metal surfaces comprise nickel surfaces.