| 摘要 |
<p>A planographic printing member comprises a substrate (2), an oleophilic layer (4), an infra-red sensitive/ablatable layer (6) and a hydrophilic layer (8). The hydrophilic layer is derived from a silicate solution, optionally containing particulate materials such as alumina and/or titania. The printing member may be exposed to radiation from a laser which ablates layer (6) to reveal areas of the oleophilic layer (4). An exposed printing member may be used in 'wet' lithographic printing.</p> |
