Ink, and ink-jet recording method and apparatus employing the ink
AssigneeCanon Kabushiki Kaisha
InventorsTakao Yamamoto, Tsuyoshi Eida, Mayumi Yamamoto
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Abstract
An ink including a recording agent and a liquid medium for dissolution or dispersion thereof, the recording agent being a compound represented by the general formula ##STR1## wherein R.sup.1 and R.sup.2 are respectively a radical selected from the group of lower alkyl, lower alkoxy, --NHCOCH.sub.3, --COOM, and --SO.sub.3 M; R.sup.3, R.sup.4, and R.sup.5 are respectively a radical selected from the group of hydrogen, hydroxyl, lower alkyl, lower alkoxy, amino, --SO.sub.3 M, and --COOM; A is ##STR2## R.sup.6 and R.sup.7 are respectively a radical selected from the group of hydrogen, hydroxyl, and lower alkoxy; m is 1 or 2; n is 0 or 1; and M is alkali metal or ammonium.
Claims5
An ink comprising a recording agent and a liquid medium for dissolution or dispersion thereof, the recording agent being a compound represented by the general formula ##STR9## wherein R.sup.1 and R.sup.2 are respectively a radical selected from the group of lower alkyl, lower alkoxy, --NHCOCH.sub.3, --COOM, and --SO.sub.3 M;
- R.sup.3, R.sup.4, and R.sup.5 are respectively a radical selected from the group of hydrogen, hydroxyl, lower alkyl, lower alkoxy, amino, --SO.sub.3 M, and --COOM;
- A is ##STR10## R.sup.6 and R.sup.7 are respectively a radical selected from the group of hydrogen, hydroxyl, and lower alkoxy;
- m is 1 or 2;
- n is 0 or 1;
- and M is alkali metal or ammonium.
Dependencies are inferred from the claim text.