Plate-making apparatus and printing plate manufacturing method

A plate-making apparatus comprising:

• an exposure head which engraves a surface of a plate material by emitting a light beam toward the plate material;
• a scanning device which performs exposure scanning by relatively moving the plate material and the exposure head;
• a correction profile generation device which generates a correction profile for correcting an emission amount of the light beam emitted by the exposure head according to a characteristic difference of the plate material;
• an exposure control device which, when a correction profile for a plate material to be used is generated by the correction profile generation device, uses the correction profile for the plate material to be used to control the emission amount of the light beam;
• and
• an identification information acquiring device which acquires identification information including a plate type and a production lot of a plate material to be used when the correction profile generation device generates the correction profile,
• wherein the correction profile generation device generates the correction profile based on the identification information including the plate type and the production lot of the plate material to be used.