| 主权项 |
1. A method of adding a gloss control table with respect to a new base material is added using a printing apparatus, the printing apparatus including
a first discharge head that discharges a color ink; a second discharge head that discharges a clear ink; a storage unit that stores the gloss control table which defines a relationship between a color DUTY which is an amount of the color ink discharged per unit area of an image forming surface of a recording medium, a clear DUTY which is an amount of the clear ink discharged per unit area, and a glossiness of an image formed by the color ink and the clear ink discharged per unit area; and a control unit, and determining the clear DUTY in the unit area according to the color DUTY in the unit area of the image based on the gloss control table such that the glossiness of the formed image becomes a predetermined value, wherein, in the storage unit, first base material information formed from a first base material which is a base material of a first recording medium, first gloss control table which is the gloss control table with respect to the first base material, and a first pattern measured value which is a pattern measured value obtained from printing a test pattern using a predetermined amount of predetermined ink with respect to the first base material and measuring the test pattern, and second base material information formed from a second base material which is a base material of a second recording medium, second gloss control table which is the gloss control table with respect to the second base material, and a second pattern measured value which is a pattern measured value obtained from printing the test pattern using a predetermined amount of predetermined ink with respect to the second base material and measuring the test pattern being associated, are stored, the method comprising: measuring the pattern of new base material for printing the test pattern using the predetermined amount of the predetermined ink of a new base material of a new recording medium on which the image is printed and for measuring the test pattern to measure the pattern measured value; inputting the pattern measured value of the new base material to the printing apparatus; interpolating the gloss control tables for obtaining a new gloss control table that is the gloss control table with respect to the new base material using a predetermined measured value interpolation method based on the first base material information and the second base material information in the control unit; and storing the new gloss control table for storing the new gloss control table obtained in the interpolating of the gloss control tables in the storage unit related to the new base material. |
