Abstract: The invention comprises a method of preparing an imaged member comprising a substrate having an imagable coating on a face thereof, the method comprising the steps of: (a) imaging a precursor of the member to produce an imaged member which includes image and non-image areas on the coated face; and (b) treating the substrate to increase its dimensional stability, the treatment comprising at least one of: (i) effecting a change in the chemical structure of the substrate, or (ii) coating a non-coated face of the substrate with a fluid, gel, or particulate solid.

Abstract: The invention comprises a precursor to an imaged member comprising a dimensionally stable substrate including an imagable coating, on a surface thereon, wherein the non-coated dimensionally stable substrate comprises dimensionally stable paper comprising at least one of the following characteristics: (i) an elastic yield such that the tensile force required to exceed the elastic yield is greater than 60 Nmm−2; (ii) a percentage elongation of the paper under a tensile load or strain at the elastic yield point smaller than 1%; and (iii) a Young's Modulus under tensile load greater than 7 GPa. The invention further extends to a method of manufacturing an imaged member from an imaged member precursor of the invention.

Abstract: The invention comprises a method of preparing an imaged member comprising a substrate having an imagable coating on a face thereof, the method comprising the steps of:

Abstract: A printing member, especially a planographic printing member, comprising a first layer which includes a fibrous material, especially a cellulosic fibrous material or a ceramic fibrous material, and a binder, for example a resin or the like, is described. An image defining means is provided over the first layer.

Abstract: A method for forming a planographic printing member is disclosed. A hydrophilic layer is formed on a support by contacting the support with a silicate solution that contains a silicate and a particulate material. An image layer is provided over the hydrophilic layer. The hydrophilic layer is treated to ensure that the image layer is able to change color on exposure. The hydrophilic layer may be treated with an acid, with a buffer formulation, with a colloidal suspension, or with a salt. Preferably the hydrophilic layer is treated with aluminum sulphate.

Abstract: A method for preparing a substrate for a planographic printing plate is disclosed. A liquid that contains water; a soluble alkali metal silicate, preferably sodium silicate; and a dispersed particulate material is coated on a substrate, preferably aluminum or an aluminum alloy, to produce a hydrophilic layer on the substrate. A layer of image material may be coated over the substrate to produce a planographic printing plate. In one embodiment the liquid contains a mixture of two particulate materials: alumina and titanium dioxide.