Cationic dyes with added multi-valent cations to reduce bleed in

Details Cationic dyes with added multi-valent cations to reduce bleed in Cationic dyes with added multi-valent cations to reduce bleed in

1992-06-26

1993-03-30

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 20D, 106 22A, C07D 1102

Patent

active

051980231

ABSTRACT:
An ink set is provided in which bleed between yellow and black inks is reduced by using a cationic yellow dye in the yellow ink and an anionic dye in the black ink. Bleed is further reduced by adding a multi-valent precipitating agent to the yellow ink. With regard to bleed between yellow and other color inks (cyan and magenta), bleed is reduced by also employing anionic dyes in the color inks.

REFERENCES:
patent: 4279653 (1981-07-01), Makishima et al.
patent: 4505749 (1985-03-01), Kanekiyo et al.
patent: 4554555 (1985-11-01), Aruga et al.
patent: 4818285 (1989-04-01), Causley et al.
patent: 5108504 (1992-04-01), Johnson et al.
patent: 5116409 (1992-05-01), Moffatt
patent: 5118350 (1992-06-01), Prasad
patent: 5143547 (1992-09-01), Kappele
patent: 5145519 (1992-09-01), Kappele

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