| 摘要 |
<p>Provided is a method for making a relief printing plate which is superior in productivity and by which a high quality image can be formed. A method for making a relief printing plate comprises: a step for preparing an original plate for a relief printing plate comprising a cross-linked relief formation layer; and an engraving step for performing laser engraving to the original plate for the relief printing plate: wherein the cross-linked relief formation layer is formed by cross-linking a relief formation layer containing (Component A) a binder polymer and (Component B) a photothermal conversion agent, the content of Component B is 0.1 % by weight or more relative to the total solid content of the relief formation layer, the engraving step is performed using an exposure head with at least two juxtaposed semiconductor lasers having a wavelength of 700 nm to 1,300 nm, and in the engraving step, gas is blown to a laser irradiation part at a wind speed of 10 m/s or more, and the blowing angle of the gas is 0° or more and less than 90° when the angle parallel to the plate surface and in the direction opposite to the drawing direction is 0°.</p> |
