Waterfast ink formulations for thermal ink-jet using organic ami

Details Waterfast ink formulations for thermal ink-jet using organic ami Waterfast ink formulations for thermal ink-jet using organic ami

1990-10-25

1992-03-31

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 20, C09D 1102

Patent

active

051004704

ABSTRACT:
A print which has superior waterfastness can be made on paper from an ink-jet printer using an ink comprising a water soluble dye, water with or without a water soluble organic solvent, and sufficient polyalkylene polyamine to provide the ink with a pH of at least 10. About 2 to 10% urea may be added to the ink to reduce crusting of the ink.

REFERENCES:
patent: 4155768 (1979-05-01), Adams et al.
patent: 4197135 (1980-04-01), Bailey et al.
patent: 4409040 (1983-10-01), Tabayashi et al.

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