Patent ID: 11878504
Assignee: TOYO SEIKAN GROUP HOLDINGS, LTD.
Field: nan (nan)
Classification: CPC nan | IPC B  H

Claim 3:
4. The plate-making method according to claim 1, wherein the image data representing halftone dots in the one color is created by:
creating plate separation image data in the one color extracted by color separation of the original image data;
creating reverse image data by reversing shading of the one color in the created plate separation image data; and
forming halftone dots of the created reverse image data on a negative condition such that, for each of the pixels, the lower a density of the one color is, the higher the halftone dot area ratio of the one color is, and
wherein the image data representing halftone dots in the other color is created by forming halftone dots of the plate separation image data in the other color extracted by the color separation of the original image data.