Color measurement device, image forming apparatus, electronic equipment, color chart, and color measurement method

Modification Example

[0212]Note that, the present disclosure is not limited to the embodiments described above, and configurations obtained by modification, improvement, combination, as appropriate, of the embodiments, and the like within a range in which it is possible to achieve an aspect of the present disclosure are included in the present disclosure.

[0213]In the embodiments described above, a case is described in which the color measurement is performed using a color chart including a plurality of color patches and including two white portions which interpose each of the color patches along the Y direction and are adjacent thereto; however, the present disclosure is not limited thereto. For example, an average value may be acquired according to measured values of other white portions, of which there is one or a plurality, besides the two white portions which are adjacent along the Y direction.

[0214]The color chart may include at least a color patch and two white portions (reference

[0215]FIG. 14 is a diagram illustrating modification example 1 of a color chart.

[0216]In a color chart 3C illustrated in FIG. 14, the white rows Lw are disposed in the first row and the last row, and the color patch rows Lc are disposed in the other rows. The color patch rows Lc are formed of only the color patches 31.

[0217]Even if this color chart 3C is used, it is possible to suppress the influence of waviness of the medium A in the Y direction, and it is possible to obtain an improvement in the color measurement precision.

[0218]FIG. 15 is a diagram illustrating modification example 2 of a color chart.

[0219]In a color chart 3D illustrated in FIG. 15, the white rows Lw are disposed in the first row, the last row, and at least one row between the first row and the last row, and the color patch rows Lc are disposed in the other rows. The color patch rows Lc are formed of only the color patches 31.

[0220]In a case in which the color measurement is carried out using the color chart 3D, for example, the reference value may be acquired using the white portion 32 which is closest to the color measurement target color patch 31 in the +Y direction, and the white portion 32 which is closest in the −Y direction, and the average value of the measured values of a plurality of the white portions 32 may be used as the reference value.

[0221]It is possible to obtain an improvement in the color measurement precision in the same manner as a case in which the color chart 3C is used, even if the color chart 3D is used.

[0222]Wi