Colorimetric chart and color reproduction estimating device

摘要

A colorimetric chart, for measuring a color reproduction characteristic of an image forming apparatus, includes: a patch column that is arranged in a sub-scanning direction representing a conveying direction in which the image forming apparatus conveys the colorimetric chart and that is used in detecting periodic color fluctuation attributed to the image forming apparatus, wherein the patch column includes patches that are arranged in different phases on the same patch column.