IMAGE FORMATION ELEMENT FOR PRODUCTION OF LITHOGRAPHIC PRINTING PLATE ACCORDING TO SILVER SALT DIFFUSION AND TRANSFER METHOD

摘要

PURPOSE: To enhance printing characteristic, especially durability to lithographic printing. CONSTITUTION: An image forming element contains (i) a base layer containing gelatin, (ii) a halation preventive layer containing halation preventive substance (iii) an silver halide emulsion layer and (iv) an image receiving layer containing a physical development nucleus on a substrate in this order, and the base layer contains fine particles having <=50nm average particle size at (1:2)-(2:1) in a weight ratio based on the gelatin weight in the base layer.