Abstract: A method for treating a lithographic printing plate is disclosed comprising the step of applying a liquid to the plate including an aqueous phase; a solvent phase which is present in the liquid in an amount ?40% wt; and one or more compound (s) having the following formula (I): R1—O—(Y)n?H wherein R1 is a methyl group, an ethyl group, a propyl group or a butyl group; Y represents —CH2—CHR2-0- with R2=hydrogen or an alkyl group and/or mixtures thereof; and n is an integer ?10.

Abstract: An ink-jet printing system including 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 ? Sd over the dispersive surface energy of said ink-jet ink ? 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: 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: The coating quality of an adhesive layer applied in direct contact on a polyester film is improved by using an alkyl (poly)glycoside as surfactant. A polyester film carrying such layer is suitable as support for a photosensitive material.

Abstract: An apparatus is disclosed for electrolytic desilvering of photographic processing solutions, more particularly fixing solutions or bleach-fixing solutions, comprising an electrolysis unit equiped with a monitoring system comprising a cathode, an anode and a reference electrode, characterized in that said reference electrode is a pH sensitive electrode. The desilvering is preferably performed under potentiostatic conditions. Whe using a pH sensitive reference electrode the cathodic plating potential is automatically corrected for pH changes. A preferred pH sensitive electrode is a glass electrode.

Abstract: A silver-containing solution is de-silvered in an electrolytic cell having an anode and a cathode. The diffusion limitation current density of the electrolytic cell is estimated by measuring a current flow there-through and silver is deposited on the cathode at a de-silvering current density which is lower than the diffusion limitation current density.