Sympathetic ink for ink jet printer

Details Sympathetic ink for ink jet printer Sympathetic ink for ink jet printer

1990-01-02

1992-02-11

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

503211, 503213, 503217, 503219, 427145, 427150, C09D 1102

Patent

active

050872834

ABSTRACT:
Sympathetic ink compositions particularly adapted for use with high speed, non-impact ink printing equipment are disclosed, together with methods of use and development thereof. The inks of the invention are water-based and include of from about 4-20% by weight of a water soluble transition metal salt (e.g., nickel sulfate), together with of from about 2-4.5%, by weight of n-butanol or 2-butanol. After application using, e.g., ink jet printing equipment, the resulting inked images are invisible to the naked eye, and can be selectively developed through use of color-forming developers such as dimethylglyoxime- or oxalic acid-type aqueous compositions.

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