Ink, and recording method making use of same

Details Ink, and recording method making use of same Ink, and recording method making use of same

1992-02-05

1993-06-01

Dixon, Jr., William R.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346140R, 106 22K, G01D 900

Patent

active

052164373

ABSTRACT:
An ink that includes a liquid medium and a dye represented by the following Formula (I): ##STR1## wherein M represents a cation selected from an alkali metal, ammonium, and an organic ammonium; R.sub.1 and R.sub.2 independently represent a group selected from a hydrogen atom, a methyl group, a methoxy group, an ethoxy group, and an acetylamino group; R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently represent a group selected from a hydrogen atom, a hydroxyl group, a sulfonic acid group, a methoxy group, and an ethoxy group; X represents a hydrogen atom, an acetyl group, a benzoyl group, --SO.sub.2 C.sub.6 H.sub.5, --SO.sub.2 C.sub.6 H.sub.4 CH.sub.3, or ##STR2## where R.sub.9 and R.sub.10 independently represent a hydrogen atom, or --C.sub.2 H.sub.4 OH; and the sulfonic acid group is present as a salt of the same cation as that represented by M.

REFERENCES:
patent: 4620876 (1986-11-01), Fujii et al.

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