Use of polymeric dyes in hot melt ink jet inks

A selective phase change ink composition, which comprises a phase change ink colorant composition and a modified phase change ink carrier composition, said selective phase change ink composition having (a) fluidic and mechanical properties which meet the parameters needed for indirect application via an intermediate transfer surface to a final receiving substrate, (b) a compressive yield strength which will allow the ink to flow in a ductile manner when external compressive forces are applied thereto, and sufficient internal cohesive strength to resist failure when the ink is fixed to said substrate, (c) a high degree of ductility on said substrate after said transfer and fixing, and (d) a high degree of lightness and chroma for thin films of uniform thickness thereof, and said phase change colorant composition selected from the group consisting of (1) an organic chromophore having a polyoxyalkylene substituent and (2) an organic chromophoto having a polyoxyalkylene substituent and a carboxylic acid or non-reactive ester or amide derivative thereof covalently bonded to the polyoxyalkylene substituent.

An ink composition suitable for use with an ink jet printhead comprising at least a colorant and an ink carrier composition, the ink composition being characterized by having a temperature range in the rubbery region of E' from about -10 to about 100 degrees C., a value of E' of from about 1.0.times.10.sup.6 to about 1.0.times.10.sup.11 dynes per square centimeter at a desired testing frequency and a glass transition temperature range of from about -40 to about 40 degrees C., where E' is determined by the equation E'=.sigma..sub.o /.epsilon..sub.o (Cos .delta.;

• wherein said colorant is selected from the group consisting of (1) an organic chromophore having an polyoxyalkylene substituent and (2) an organic chromophore having a polyoxyalkylene substituent and a carboxylic acid or non-reactive derivative thereof covalently bonded to the polyoxyalkylene substituent.

A phase change ink composition comprising a composition comprising a fatty amide-containing material, said fatty amide-containing material comprising a tetra-amide compound and a mono-amide compound, and a compatible colorant, said phase change ink composition being in a solid phase at ambient temperature and in a liquid phase at elevated operating temperature, said ink composition having a high degree of lightness and chroma, and being rectilinearly light transmissive in a thin film of substantially uniform thickness, wherein said colorant comprises at least one polymeric dye.

A selective phase change ink composition, which comprises a phase change ink colorant composition and a modified phase change ink carrier composition, said selective phase change ink composition having (a) predetermined fluidics and mechanical properties which meet the parameters needed indirect application via an intermediate transfer surface to a final receiving substrate, where it is transferred and fixed onto a substrate to form a printed substrate, (b) a compressive yield strength which will allow the ink to flow in a ductile manner when external compressive forces are applied thereto, and sufficient internal cohesive strength to resist failure when the ink is fixed to said substrate, (c) a high degree of ductility on said substrate after said transfer and fixing, and (d) a high degree of lightness and chroma for thin films of uniform thickness thereof, wherein said colorant comprises at least one polymeric dye.

A phase change ink composition comprising a phase change ink carrier compositions comprising a tetra-amide compound and a mono-amide compound and a compatible colorant, said ink composition being solid phase at ambient temperature and in a liquid phase at elevated operating temperature, and having a high degree of lightness and chroma and being rectilinearly light transmissive in thin films of substantially uniform thickness, wherein the C.sub.ab.sup.* value of a substantially uniform thin film of about 5-20 micron thickness, of subtractive primary Yellow, magenta and cyan color phase change ink compositions are at least about 40 for said yellow ink composition, at least about 50 for said magenta ink composition, and at least about 30 for said cyan ink composition, and wherein the L.sup.* value of a substantially uniform thin film to about 5-20 micron thickness, of a black color phase change ink is not more than about 35, wherein said colorant comprises at least one polymeric dye.

An ink composition suitable for use with an ink jet printhead comprising at least a colorant and an ink carrier composition, the ink composition being characterized by having a temperature range in the rubbery region of E' from about -10 to about 100 degrees C., a value of E' of from about 1.0.times.10.sup.6 to about 1.0.times.10.sup.11 dynes per square centimeter at a desired testing frequency and a glass transition temperature range temperature of from about -40 to about 40 degrees C., where E' is determined by the equation E'=.sigma..sub.o /.epsilon..sub.o (Cos .delta.) wherein said colorant is comprised at least one polymeric dye.