INSPECTION CHART, CORRECTION VALUE ACQUISITION METHOD OF INK JET PRINTING DEVICE, AND INK JET PRINTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an inspection chart with which a correction value according to the number of nozzles can be easily obtained in a short time.SOLUTION: A correction value acquisition method of an ink jet printing device forms a comparison chart CC including a first line segment group SL1 constituted by forming first line segments L1 at a prescribed interval and a second line segment group SL2 constituted by forming second line segments L2 between the first line segments L1 by the nozzles in the selected number and formed by changing a correction value for correcting drive signals, compares the density of each first line segment L1 with the density of each second line segment L2 in the conveyance direction of a continuous sheet in the comparison chart CC, specifies the second line segment L2 whose density substantially matches the first line segment L1, acquires a correction value expressing the difference with a reference drive signal corresponding to the second line segment L2, and stores a correction value in association with the selected number, and can easily obtain the correction value according to the number of nozzles at the time of image formation in the short time by drawing an inspection chart TC.SELECTED DRAWING: Figure 4