Method and device for determining ink-jet interval time, computer equipment and storage medium

The embodiment of the invention discloses a method for determining the ink-jet interval time. A plurality of scanning images are obtained by scanning a plurality of test samples obtained by printing at different ink-jet time intervals; each scanning image is subjected to gray processing to obtain a corresponding ink mark gray image; a test area corresponding to each printing test point is determined, and each test area includes a plurality of pixels; a scatter distribution matrix corresponding to each ink mark gray image is determined according to gray values of the multiple pixels in each test area; a preset convergence threshold is obtained; a convergence interval corresponding to the corresponding ink mark gray image is determined according to the corresponding scatter distribution matrix and the preset convergence threshold; and the ink-jet interval time corresponding to the ink mark gray image with the minimum convergence interval is determined as the target ink-jet interval time,thus the ink-jet printin