Patent ID: 11890878
Assignee: MIMAKI ENGINEERING CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  H  G | IPC B  G  H

Claim 8:
9. A method for generating ejection position data for generating ejection position data that is data indicating an ejection position where ink is ejected from an inkjet head in a printing apparatus that performs color printing using inks of a plurality of colors, the method comprising:
an image acquisition process of acquiring color image data that is data indicating a color image to be printed by the printing apparatus;
a separation process of generating a gray-scaled image corresponding to each color of the inks of the plurality of colors used in the printing apparatus, the separation process separating the color image according to each color of the inks of the plurality of colors to generate a gray-scaled image corresponding to each color;
an edge detection process of detecting an edge with respect to at least a part of a gray-scaled image based on processing target data that is image data indicating the gray-scaled image corresponding to each color;
an edge correction process of performing image processing of correcting the edge detected in the edge detection process on the gray-scaled image; and
an ejection position data generation process of generating the ejection position data by reflecting a result of the image processing in the edge correction process; wherein
the processing target data is data indicating the gray-scaled image configured by pixels associated with the ejection position, and in which a non-ejection value that is a value indicating that ink is not ejected to the corresponding ejection position or an ejection value that is a value other than the non-ejection value is set as a pixel value of each pixel;
in the edge detection process, the edge is detected by detecting a position where a pixel to which the non-ejection value is set and a pixel to which the ejection value is set are adjacent to each other; and
in the edge correction process, the image processing of correcting the edge is performed to reduce ink to be ejected to at least a part of the ejection position where ink is ejected from the inkjet head to draw the edge detected in the edge detection process.