Printing plate and plate making method

A printing plate comprising

• a substrate;
• and
• a hydrophilic porous layer provided on a surface of said substrate, the hydrophilic porous layer including a plurality of small pits, imaging resin being deposited on selected parts of the surface of the hydrophilic porous layer,
• and wherein the plurality of small pits has an average diameter substantially smaller than a diameter of a dot that is to be formed by the imaging resin deposited on the surface of said porous layer.

A printing plate comprising:

• a substrate;
• and
• a hydrophilic porous layer provided on a surface of said substrate, the hydrophilic porous layer including a plurality of small pits, imaging resin being deposited on selected parts of the surface of the hydrophilic porous layer,
• wherein the plurality of small pits has an average diameter substantially smaller than an average diameter of particles of an oil-based printing ink.

The printing plate comprising:

• a substrate;
• and
• a hydrophilic porous layer provided on a surface of said substrate, the hydrophilic porous layer including a plurality of small pits, imaging resin being deposited on selected parts of the surface of the hydrophilic porous layer,
• wherein said small pits extend substantially perpendicularly to a major plane of said printing plate and are spaced from one another.

A method for making a printing plate comprising:

• preparing a blank printing plate including a substrate and a hydrophilic porous layer provided on a surface of the substrate, the hydrophilic porous layer including a plurality of small pits;
• applying imaging resin in a substantially liquid form on selected parts of the surface of the hydrophilic porous layer;
• curing the imaging resin applied to the hydrophilic porous layer;
• and
• applying the imaging resin by an ink jet recording head,
• wherein the plurality of small pits has an average diameter substantially smaller than a dot formed by the imaging resin applied by the ink jet recording head.