The present invention relates to 1,6,7,12-tetra-(2-isopropylphenoxy)-substituted perylene tetracarboxylic acid diimides of the formula (I) wherein R.sup.1 and R.sup.2 independently of each other are selected from hydrogen, C.sub.1-C.sub.24-alkyl, C.sub.1-C.sub.24-haloalkyl, C.sub.3-C.sub.24-cycloalkyl, C.sub.6-C.sub.24-aryl and C.sub.6-C.sub.24-aryl-C.sub.1-C.sub.10-alkylene, where the rings of cydoalkyi, aryl, and aryl-alkylene in the three last-mentioned radicals are unsubstituted or substituted as defined in the claims and in the description. Moreover, the present invention relates to the use of said perylene compounds, in particular to the use of said perylene compound(s) in color converters, for data transmission and in security inks for security printing. The present invention also relates to the use of said color converters, to their use in lighting devices, to lighting devices comprising at least one LED and at least said color converter and to a device producing electric power upon illumination comprising a photovoltaic cell and said color converter. ##STR00001##

A laser panel, a laser array device, and a laser display. The laser panel and the laser array device separately comprise multiple groups of independent laser light source modules; each group of laser light source modules comprises plural light sources; the plural light sources are all produced by inkjet printing; the laser display and a voltage-driven laser display separately comprise the laser panel. Producing a laser panel by inkjet printing provides a novel technical solution for cheap and industrial manufacturing of laser panels. It is difficult to generate laser coherent superposition between the light emitted by the laser light source module, and therefore, speckles caused by laser coherence in conventional laser display technologies are greatly eliminated. The present invention achieves a voltage-driven laser display, and facilitates achieving a better display effect while reducing the volume of the display.

A laser panel, a laser array device, and a laser display. The laser panel and the laser array device separately comprise multiple groups of independent laser light source modules; each group of laser light source modules comprises plural light sources; the plural light sources are all produced by inkjet printing; the laser display and a voltage-driven laser display separately comprise the laser panel. Producing a laser panel by inkjet printing provides a novel technical solution for cheap and industrial manufacturing of laser panels. It is difficult to generate laser coherent superposition between the light emitted by the laser light source module, and therefore, speckles caused by laser coherence in conventional laser display technologies are greatly eliminated. The present invention achieves a voltage-driven laser display, and facilitates achieving a better display effect while reducing the volume of the display.

A magenta dye-based ink composition and a method for improving the print qualities of a magenta dye-based ink composition. The magenta dye-based ink composition includes one or more red dye(s) and a minor but effective amount of black dye. A weight ratio of red dye(s) to black dye in the ink composition ranges from about 20:1 to about 100:1.

A magenta dye-based ink composition and a method for improving the print qualities of a magenta dye-based ink composition. The magenta dye-based ink composition includes one or more red dye(s) and a minor but effective amount of black dye. A weight ratio of red dye(s) to black dye in the ink composition ranges from about 20:1 to about 100:1.

Provided by the present invention is a technology to realize a gold decoration on a surface of an inorganic substrate by inkjet printing. The gold resinate solution for inkjet printing disclosed herein is usable to provide an inorganic substrate with a gold decoration by inkjet printing. The gold resinate solution contains gold resin balsam sulfide; and a solvent dissolving the gold resin balsam sulfide. The gold resin balsam sulfide has a ratio (I.sub.Au/I.sub.S ratio) of a peak intensity I.sub.Au derived from gold element (Au) with respect to a peak intensity I.sub.S derived from sulfur element (S), in X-ray fluorescence analysis, of 8.5 or higher. The gold resinate solution having an I.sub.Au/I.sub.S ratio of 8.5 or higher may have the viscosity thereof kept low even if containing a large amount of gold, and therefore, may realize a gold decoration on an inorganic substrate by inkjet printing.

A textile printing ink jet ink composition set includes a textile printing ink jet ink composition having a hue angle ∠h° within a range of 260° or more and 310° or less and a chroma C* of 45 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing; and a textile printing ink jet ink composition having a hue angle ∠h° within a range of 15° or more and 80° or less and a chroma C* of 65 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing.

A textile printing ink jet ink composition set includes a textile printing ink jet ink composition having a hue angle ∠h° within a range of 260° or more and 310° or less and a chroma C* of 45 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing; and a textile printing ink jet ink composition having a hue angle ∠h° within a range of 15° or more and 80° or less and a chroma C* of 65 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing.

An example of a dye sublimation inkjet ink includes a disperse dye colorant dispersion; a water soluble polymeric ultraviolet (UV) absorber; a co-solvent; and a balance of water. The water soluble polymeric UV absorber of the dye sublimation inkjet ink has absorption at a radiation wavelength ranging from about 360 nm to about 410 nm.

An example of a dye sublimation inkjet ink includes a disperse dye colorant dispersion; a water soluble polymeric ultraviolet (UV) absorber; a co-solvent; and a balance of water. The water soluble polymeric UV absorber of the dye sublimation inkjet ink has absorption at a radiation wavelength ranging from about 360 nm to about 410 nm.