Emulsion ink for stencil printing

Details Emulsion ink for stencil printing Emulsion ink for stencil printing

1997-06-27

1999-05-11

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 3126, C09D11/02

Patent

active

059023880

ABSTRACT:
An emulsion ink for stencil printing is provided, which is high in transparency and does not hide previously a printed pattern when it is overlaid or printed on the pattern so as to facilitate multicolor printing with conventional stencil printing machines. The emulsion ink comprises an oil phase and a water phase and contains in the oil phase a coloring pigment together with an extending pigment that is insoluble in the oil phase, in which the ink has an optical density value of 1.0 or more as measured by a reflection densitometer when the ink is applied and dried in a thickness of 50 .mu.m onto a transparent sheet placed on a black standard board, and in which the ink has an optical density value of 0.7 or less as measured by the reflection densitometer when the transparent sheet is placed on a white standard board. Preferably, the coloring pigment constitutes 0.02 to 1%, and the extending pigment constitutes 1 to 5% by weight, of the total weight of the ink.

REFERENCES:
patent: 5637137 (1997-06-01), Okuda et al.
patent: 5667570 (1997-09-01), Okuda et al.

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