Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1994-10-05
1995-12-19
Klemanski, Helene
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 22F, 106 22H, 106 24A, 106 25R, 106 25A, 106 26R, C09D 1102, C09D 1104, C09D 1114
Patent
active
054765404
ABSTRACT:
A method for controlling color bleed between adjacent multi-color ink regions on a print medium is disclosed. Color bleed involves the migration of color agents between adjacent zones in a multicolored printed image on a print medium. A first composition containing a gel-forming species and a color agent is brought into contact on a region of the print medium with a second composition having a color agent and a gel-initiating species or chemical conditions which bring about gelation. In alternative embodiments, the print medium may be pretreated with either a gel-initiating species or a gel-forming species (with no colorant), followed by treatment with a gel-forming species or gel-initiating species (with colorant), respectively. The formation of the gel upon the print medium impedes the movement of the color agent or agents and thus reduces the color bleed between adjacent zones.
REFERENCES:
patent: 4938801 (1990-07-01), Yoshioka et al.
patent: 5133803 (1992-07-01), Moffatt
patent: 5226957 (1993-07-01), Wickramanayake et al.
Moffatt John R.
Shields James P.
Hewlett Packard Corporation
Klemanski Helene
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