Abstract: Method for cleaning a lithographic printing plate comprising the step of applying a liquid to the plate including an aqueous phase, a solvent phase and at least one alkyl (poly) glucoside, said solvent phase including a mixture comprising aliphatic and/or aromatic hydrocarbons, characterized in that the amount of solvent phase in the liquid is ?40% wt.

Abstract: A method for treating a lithographic printing plate including the step of applying a liquid containing a surfactant to the plate, characterized in that the surfactant includes at least one hydrophilic segment including polyglycerol, and at least one hydrophobic segment selected from an optionally substituted alkylene group, an alkyl or aryl substituted poly(meth)acrylate, an optionally substituted polyester, polyether, polyurethane, polycarbosilane, polysiloxane, polystyrene and/or a polymer including a perfluoroalkyl group with the proviso that the liquid is not applied as a fountain solution.

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: Method for cleaning a lithographic printing plate comprising the step of applying a liquid to the plate including an aqueous phase, a solvent phase and at least one alkyl (poly) glucoside, said solvent phase including a mixture comprising aliphatic and/or aromatic hydrocarbons, characterized in that the amount of solvent phase in the liquid is ?40% wt.

Abstract: A method for treating a lithographic printing plate including the step of applying a liquid containing a surfactant to the plate, characterized in that the surfactant includes at least one hydrophilic segment including polyglycerol, and at least one hydrophobic segment selected from an optionally substituted alkylene group, an alkyl or aryl substituted poly(meth)acrylate, an optionally substituted polyester, polyether, polyurethane, polycarbosilane, polysiloxane, polystyrene and/or a polymer including a perfluoroalkyl group with the proviso that the liquid is not applied as a fountain solution.