A positive-working lithographic printing plate precursor is disclosed which comprises on a support having a hydrophilic surface or which is provided with a hydrophilic layer a heat and/or light-sensitive coating including an infrared absorbing agent, said heat and/or light-sensitive coating comprising a first layer comprising a binder including a monomeric unit including a sulfonamide group; characterized in that the binder further comprises a monomeric unit including a phosphonic acid group or a salt thereof, and that the monomeric unit comprising the phosphonic acid group is present in an amount comprised between 2 mol % and 15 mol %.
本发明公开了一种阳性印刷版前体,其包括在具有亲
水表面的支撑体上或在其上提供了亲
水层的支撑体上,包括红外吸收剂的热和/或光敏涂层,所述热和/或光敏涂层包括第一层,其中包括一种包括磺酰胺基的单体单元的粘合剂;其特征在于,所述粘合剂进一步包括一种包括
膦酸基或其盐的单体单元,并且含有
膦酸基的单体单元的量在2摩尔%至15摩尔%之间。