Aqueous ink compositions
AssigneeXerox Corporation
InventorsThomas W. Smith, David J. Luca, Kathleen M. McGrane
Life of this patent
Estimating the term…
Abstract
Disclosed is an aqueous ink composition comprising an aqueous liquid vehicle, a colorant, and an additive wherein, when the ink has been applied to a recording substrate in an image pattern and a substantial amount of the aqueous liquid vehicle has either evaporated from the ink image, hydrogen bonds of sufficient strength exist between the additive molecules so that the additive forms hydrogen-bonded oligomers or polymers.
Claims20
An aqueous ink composition comprising an aqueous liquid vehicle, a colorant, and an additive which is either (1) a material selected from (a) those of the formula
- C1—X—C2
- (b) those of the formula
- 106
- (c) those of the formula
- 107
- or (d) mixtures of two or more of (a), (b), and/or (c);
- or (2) a material selected from mixtures of (a) at least one member selected from (i) those of the formula
- A1—X1—A2
- (ii) those of the formula
- 108
- (iii) those of the formula
- 109
- (iv) those of the formula
- A1—X1—B1
- (v) those of the formula
- 110
- (vi) those of the formula
- 111
- (vii) those of the formula
- 112
- or (viii) mixtures of two or more of (i), (ii), (iii), (iv), (v), (vi), and/or (vii), and (b) at least one member selected from (i) those of the formula
- B1—X2—B2
- (ii) those of the formula
- 113
- (iii) those of the formula
- 114
- (iv) those of the formula
- A2—X2—B2
- (v) those of the formula
- 115
- (vi) those of the formula
- 116
- (vii) those of the formula
- 117
- or (viii) mixtures of two or more of (i), (ii), (iii), (iv), (v), (vi), and/or (vii), wherein each “A” is an acidic moiety and each “B” is a basic moiety, wherein each “A” is capable of forming at least one hydrogen bond with at least one “B” and each “B” is capable of forming at least one hydrogen bond with at least one “A”, each “C” is a moiety either capable of forming at least one hydrogen bond with a moiety identical to itself or capable of forming at least one hydrogen bond with another “C” moiety, each “X” is a divalent moiety, each “Y” is a trivalent moiety, and each “Z” is a tetravalent moiety, wherein, when the ink has been applied to a recording substrate in an image pattern and a substantial amount of the aqueous liquid vehicle has evaporated from the ink image, hydrogen bonds of sufficient strength exist either between the “A” groups and the “B” groups or between the “C” groups so that the additive forms hydrogen-bonded oligomers or polymers.
A process which comprises (A) incorporating into an ink jet printing apparatus an aqueous ink composition comprising an aqueous liquid vehicle, a colorant, and an additive which is either (1) a material selected from (a) those of the formula
- C1—X—C2
- (b) those of the formula
- 128
- (c) those of the formula
- 129
- or (d) mixtures of two or more of (a), (b), and/or (c), or (2) a material selected from mixtures of (a) at least one member selected from (i) those of the formula
- A1—X1—A2
- (ii) those of the formula
- 130
- (iii) those of the formula
- 131
- (iv) those of the formula
- A1—X1—B1
- (v) those of the formula
- 132
- (vi) those of the formula
- 133
- (vii) those of the formula
- 134
- or (viii) mixtures of two or more of (i), (ii), (iii), (iv), (v), (vi), and/or (vii), and (b) at least one member selected from (i) those of the formula
- B1—X2—B2
- (ii) those of the formula
- 135
- (iii) those of the formula
- 136
- (iv) those of the formula
- A2—X2—B2
- (v) those of the formula
- 137
- (vi) those of the formula
- 138
- (vii) those of the formula
- 139
- or (viii) mixtures of two or more of (i), (ii), (iii), (iv), (v), (vi), and/or (vii), wherein each “A” is an acidic moiety and each “B” is a basic moiety, wherein each “A” is capable of forming at least one hydrogen bond with at least one “B” and each “B” is capable of forming at least one hydrogen bond with at least one “A”, each “C” is a moiety either capable of forming at least one hydrogen bond with a moiety identical to itself or capable of forming at least one hydrogen bond with another “C” moiety, each “X” is a divalent moiety, each “Y” is a trivalent moiety, and each “Z” is a tetravalent moiety, wherein, when the ink has been applied to a recording substrate in an image pattern and a substantial amount of the aqueous liquid vehicle has evaporated from the ink image, hydrogen bonds of sufficient strength exist either between the “A” groups and the “B” groups or between the “C” groups so that the additive forms hydrogen-bonded oligomers or polymers;
- and (B) causing droplets of the inks to be ejected in an imagewise pattern onto a recording substrate.
Dependencies are inferred from the claim text.