Ink for ink jet recording
AssigneeMinolta Co., Ltd.
InventorsTakamasa Ueda, Tomoko Yamamoto, Hideo Hotomi
Life of this patent
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Abstract
This invention relates to the ink for ink-jetting using water-soluble reactive dye represented by general formula (A): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are hydrogen atom or alkyl group, X represents substituted or unsubstituted phenylene group, substituted or unsubstituted diphenylene group, substituted or unsubstituted naphthylene group or --NR.sub.3 --X--R.sub.3 N-- represents 1,4-pyperazinylene group, M is alkaline metal, quaternary ammonium or hydrogen atom, n is an integer of 1 to 5, m is an integer of 1 to 5 and "l" is 5-m, and by using those dyes as magenta dye excellent light resistance and water resistance are given to the ink.
Claims43
Ink for ink-jetting, comprising 0.1-5 wt % of water-soluble dye represented by general formula (A):
- ##STR9## wherein R.sub.1, R.sub.2 and R.sub.3 are hydrogen atom or alkyl group, X represents substituted or unsubstituted phenylene group, substituted or unsubstituted diphenylene group, substituted or unsubstituted naphthylene group or --NR.sub.3 --X--R.sub.3 N-- represents 1,4-pyperazinylene group, M is alkaline metal, quaternary ammonium or hydrogen atom, n is an integer of 1 to 5, m is an integer of 1 to 5 and "l" is 5-m;
- 2-8 wt % of polyethylene imine;
- and water.
Ink for ink-jetting, comprising 0.1 to 5 wt % of water-soluble dye represented by general formula (A):
- ##STR10## wherein R.sub.1, R.sub.2 and R.sub.3 are hydrogen atom or alkyl group, X represents substituted or unsubstituted phenylene group, substituted or unsubstituted diphenylene group, substituted or unsubstituted naphthylene group or --NR.sub.3 --X--R.sub.3 N-- represents 1,4-pyperazinylene group, M is alkaline metal, quaternary ammonium or hydrogen atom, n is an integer of 1 to 5, m is an integer of 1 to 5 and "l" is 5-m;
- 0.01-2 wt % of the mixture of NaOH and at least one compound selected from the group consisting of NaHCO.sub.3 and Na.sub.2 B.sub.4 O.sub.7 ;
- and water.
Ink for ink-jetting, comprising 0.1 to 5 wt % of water-soluble dye represented by general formula (A):
- ##STR11## wherein R.sub.1, R.sub.2 and R.sub.3 are hydrogen atom or alkyl group, X represents substituted or unsubstituted phenylene group, substituted or unsubstituted diphenylene group, substituted or unsubstituted naphthylene group or --NR.sub.3 --X--R.sub.3 N-- represents 1,4-pyperazinylene group, M is alkaline metal, quaternary ammonium or hydrogen atom, n is an integer of 1 to 5, m is an integer of 1 to 5 and "l" is 5-m;
- 0.01-2 wt % of alkaline metal salts of ethylenediaminetetraacetic acid;
- and water.
Ink for ink-jetting, comprising 0.1 to 5 wt % of water-soluble dye represented by general formula (A):
- ##STR12## wherein R.sub.1, R.sub.2 and R.sub.3 are hydrogen atom or alkyl group, X represents substituted or unsubstituted phenylene group, substituted or unsubstituted diphenylene group, substituted or unsubstituted naphthylene group or --NR.sub.3 --X--R.sub.3 N-- represents 1,4-pyperazinylene group, M is alkaline metal, quaternary ammonium or hydrogen atom, n is an integer of 1 to 5, m is an integer of 1 to 5 and "l" is 5-m;
- 0.01 to 5 wt % of alkylene oxide addition products of acetylene glycol represented by general formula (B):
- ##STR13## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is alkyl group having 1 to 5 carbon atoms, p is an integer of 2 or 3, q and r each is an integer of more than 1;
- and water.
Dependencies are inferred from the claim text.