Graphic arts ink and eradicator combination
AssigneeZipatone, Inc.
InventorsKenneth G. Griffiths, Arnel D. Potter
Life of this patent
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Abstract
An ink and eradicator system for use in the graphic arts comprising an ink containing a dye which is reducible to a colorless form in combination with a volatile acid and a non-volatile organic acid, dissolved to an aqueous solvent; and an ink eradicator containing a soluble sulfite or phosphite reducing agent and an aliphatic organic amine, dissolved in an aqueous solvent.
Claims8
An ink and eradicator system for use in the graphic arts which comprises:
- (a) an ink containing a dye which is reducible to a colorless form in combination with a volatile strong acid and a non-volatile organic acid, dissolved in an aqueous solvent, and
- (b) an ink eradicator containing a soluble sulfite or phosphite reducing agent and an aliphatic organic amine, dissolved in an aqueous solvent, said reducing agent capable of converting said dye of said ink to a colorless form when said ink eradicator is applied to said ink.
Method of applying and removing graphic representations from paper which comprises applying thereto an ink containing a dye which is reducible to a colorless form in combination with a volatile strong acid and a non-volatile organic acid, dissolved in an aqueous solvent, and thereafter removing all or part of the graphic representations by applying thereto an ink eradicator comprising a soluble sulfite or phosphite reducing agent and an aliphatic organic amine, dissolved in an aqueous solvent, said reducing agent capable of converting said dye to a colorless form when said ink eradicator is applied to said ink.
Dependencies are inferred from the claim text.