Abstract: A radiation curable composition comprising a novel photoreactive polymer is disclosed comprising a dendritic polymer core with at least one initiating functional group and at least one co-initiating functional group. Suitable radiation curable compositions are varnishes, lacquers,printing inks and radiation curable ink-jet inks. The dendritic polymeric core is preferably a hyperbranched polymer.

Abstract: A novel polymeric initiator is disclosed comprising a dendritic polymer core with at least one initiating functional group as an end group. The dendritic polymeric core is preferably a hyperbranched polymer. The polymeric initiators are useful in radiation curable compositions such as varnishes, lacquers and printing inks and are especially useful in radiation curable inkjet inks.

Abstract: Radiation curable compositions with a polymeric co-initiator are disclosed comprising a dendritic polymer core with at least one co-initiating functional group as an end group. The dendritic polymeric core is preferably a hyperbranched polymer. Industrial applications include varnishes, lacquers and printing inks. The polymeric co-initiator is especially useful in radiation curable inkjet ink.

Abstract: A multi-density ink-jet ink set comprising two black ink compositions and at least three colour inks, wherein the first black ink composition has a lightness L* in the range of 35 to 65 as calculated from the spectral transmittance of a 1000-fold dilution of the first black ink composition, and the second black ink composition has an lightness L* value in the range of 70 to 100 as calculated from the spectral transmittance of a 1000-fold dilution of the second black ink composition. A method for ink-jet printing is also disclosed.

Abstract: A radiation-curable ink-jet black ink comprising a black pigment, at least one colour pigment and at least one radiation-curable compound is disclosed. An ink-jet set comprising the radiation-curable ink-jet black ink and a process for printing with such an ink-jet ink set are disclosed. Image quality defects of noticeable chromatic variation in adjacent print patches of bi-directional printing are eliminated and reduced ink consumption is observed.

Abstract: An ink-jet printing system comprising at least one ink-jet ink and a means for jetting an ink-jet ink onto a surface of a substantially non-absorbing ink-jet ink-receiver, characterized in that the ratio ? Sd/? Ld of the dispersive surface energy of said ink-receiver surface a ? Sd over the dispersive surface energy of said ink-jet ink a ? Ld is greater than 0.9. A process for ink-jet printing is also claimed. High areal throughput ink-jet printing (e.g. >100 m2/hour) with curable inks can be performed on different kinds of ink-receiver surfaces with a good image quality and colour density due to a controlled spreading of the ink-drops which can be directly cured.

Abstract: A radiation curable ink composition comprising at least one initiator and at least one polyhedral oligomeric silsesquioxane (POSS) represented by the following empirical formula [R(SiO1.5)]n wherein n=4,6,8,10,12,14,16 and larger and each R is independently hydrogen, an inorganic group, an alkyl group, an alkylene group, an aryl group, an arylene group, or non-heterocyclic group-containing organo-functional derivatives of alkyl, alkylene, aryl or arylene groups; and a process for obtaining a colourless, monochrome or multicolour ink jet image comprising the steps of jetting one or more streams of ink droplets having the above-mentioned composition onto an ink-jet ink receiver material, and subjecting the obtained image to radiation curing.

Abstract: A polyester film is disclosed comprising on its upper side a latex subbing layer, and a gelatin subbing layer which contains a black spacing agent. This polyester film can be advantageously used as support for several imaging elements, such as photographic materials, (photo)thermographic materials, and ink jet recording elements.

Abstract: A red sensitive photographic recording material is disclosed having an emulsion layer with low silver halide and low binder content. It further comprises a polyester support having subbing layers on both sides and an anti-halation layer on the back side.

Abstract: A polyester film is disclosed comprising on its upper side a latex subbing layer, and a gelatin subbing layer which contains a black spacing agent. This polyester film can be advantageously used as support for several imaging elements, such as photographic materials, (photo)thermographic materials, and ink jet recording elements.

Abstract: A red sensitive photographic recording material is disclosed having an emulsion layer with low silver halide and low binder content. It further comprises a polyester support having subbing layers on both sides and an anti-halation layer on the back side.

Abstract: A new class of dyes useful in photographic materials as antihalation dyes, filter dyes or acutance dyes is disclosed. The dyes absorb in the spectral region 450-500 nm and are especially useful in photographic materials designed for recording by means of an Ar ion laser.

Abstract: A photographic material is disclosed comprising a support, at least one silver halide emulsion layer, and optionally one or more non-photosensitive hydrophylic layer(s), characterized in that at least one of said emulsion layer(s) and/or non-photosensitive layer(s) contains a triphenylmethane dye, absorbing around 670 nm, represented by general formula (ID) : ##STR1## wherein R.sup.1 and R.sup.2 each independently represents hydrogen unsubstituted or substituted alkyl, or unsubstituted or substituted aryl,R.sup.3 represents an electron-withdrawing group, and the substance contains at least two water-solubilizing groups,and X.sup.- represents an anion, or an intramolecular anionic group.The triphenylmethane dyes can serve as filter dye, acutance dye, or anti-halation dye. The claimed photographic materials are especially suited for exposure by a laser diode emitting at 670 nm.

Abstract: A photographic material is disclosed comprising a support, at least one silver halide emulsion layer, and optionally one or more non-photosensitive hydrophylic layer(s), characterized in that at least one of said emulsion layer(s) and/or non-photosensitive layer(s) contains a triphenylmethane dye, absorbing around 670 nm, represented by general formula (ID): ##STR1## wherein R.sup.1 and R.sup.2 each independently represents hydrogen unsubstituted or substituted alkyl, or unsubstituted or substituted aryl, R.sup.3 represents an electron-withdrawing group, and the substance contains at least two water-solubilizing groups, and X.sup.- represents an anion, or an intramolecular anionic group.The triphenylmethane dyes can serve as filter dye, acutance dye, or anti-halation dye. The claimed photographic materials are especially suited for exposure by a laser diode emitting at 670 nm.