Disclosed is an ink carrier comprising (A) an antioxidant mixture comprising (a) a hindered phenol antioxidant, and (b) a hindered amine antioxidant, (B) a polyalkylene wax, (C) a functional wax, and (D) an ester-terminated amide. The low polarity ink carrier is substantially resistant to phase separation, has excellent thermal stability, resists autocatalytic degradation of the ink composition and a substantial color shift upon standing, and provides enhanced humidity resistance. This ink carri...

Disclosed is an ink carrier comprising an ester terminated oligo-amide material having a substantially low polydispersity. This ink carrier can be combined with a colorant to produce an ink composition.

Disclosed is a phase change black ink composition comprising (1) a low polarity ink carrier comprising (A) an ester-terminated polyamide, (B) a Guerbet alcohol or a Guerbet alcohol mixture including at least one linear alcohol, and (C) a low polarity wax, and (2) a black colorant. The ink carrier can also include a dispersant. The ink is resistant to aggregation and settling of the black colorant when a standby-mode printer temperature for the ink is not more than about the gel temperature of th...

Phase change inks comprising a phase change ink carrier and a colorant compound of the formula ##STR00001## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, m, n, and p are as defined herein, R.sub.6 is a direct bond, an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, R.sub.66 is an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, G is a hydroxy group, a carboxylic acid group, an alkyl group having at least about 8 carbon a...

The phase change ink a viscosity of from about 4 mPa-s to about 50 mPa-s at a first temperature and has a viscosity of from 10.sup.4 mPa-s to about 10.sup.9 mPa-s at a second lower temperature. The second temperature may be below the first temperature by at least 10.degree. C. but by no more than 50.degree. C. The first temperature may be from about 60.degree. C. to about 110.degree. C. and the second temperature may be from about 20.degree. C. to about 70.degree. C. A curve of log.sub.10 viscos...

Disclosed is a phase change ink composition comprising (a) a phase change ink carrier comprising (1) an amide; and (2) a polyethylene wax having an average peak molecular weight of from about 350 to about 730 and a polydispersity of from about 1.0001 to about 1.5; and (b) a colorant compound of the formula ##STR00001## or mixtures thereof, wherein R.sub.1, R.sub.2, R.sub.3, M, A, E, G, J, m, n, and p are as defined herein.

Disclosed is a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising (i) a branched triamide and (ii) a polyethylene wax having an average peak molecular weight of from about 350 to about 730, a polydispersity of from about 1.03 to about 3.0, and an asymmetrical molecular weight distribution skewed toward the high molecular weight end. Also disclosed is a process which comprises (1) incorporating into an ink jet printing apparatus a phase change i...

In an ink composition comprising a phosphoric ester and a dye, if the phosphoric ester is composed of an acid-type phosphoric ester and a neutralized-type phosphoric ester, the phosphoric ester and the dye hardly react with each other. Therefore, when such an ink composition is used to form a dye layer, a constituent layer of a heat transfer printing sheet, the discoloration or fading of the dye layer is minimized. Further, a heat transfer printing sheet comprising a dye layer formed by using th...

Disclosed is a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising (i) a branched triamide and (ii) a polyethylene wax having an average peak molecular weight of from about 350 to about 730 and a polydispersity of from about 1.0001 to about 1.500. Also disclosed is a process which comprises (1) incorporating into an ink jet printing apparatus a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising...

Disclosed is a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising (i) an amide and (ii) a Fischer-Tropsch wax having an average peak molecular weight of from about 300 to about 800 and a polydispersity of from about 1.001 to about 3. Also disclosed is a process which comprises (1) incorporating into an ink jet printing apparatus a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising (i) an amide...