Control apparatus, control method, and storage medium

A control method of controlling a control apparatus that includes one or more circuits or one or more processors and at least one memory, the at least one memory being coupled to the one or more processors and having stored thereon instructions executable by the one or more processors, the control method comprising:

• controlling printing of a patch on a printing medium, the patch being formed by printing a fluorescent material;
• and
• correcting a printing amount of the fluorescent material based on a measurement result obtained by receiving light reflected by the printing medium on which the patch is printed,
• wherein the patch is printed using the fluorescent material and a non-fluorescent material, and at least one dot of the non-fluorescent material overlaps a dot of the fluorescent material,
• a luminous wavelength of a fluorescent whitening agent contained in the printing medium is an excitation wavelength of the fluorescent material, and
• the non-fluorescent material absorbs at least one of light in an excitation wavelength range of the fluorescent whitening agent or light in a luminous wavelength range of the fluorescent whitening agent.

A non-transitory computer readable storage medium storing a program that causes a computer to execute a control method of controlling a control apparatus, the control apparatus including one or more circuits or one or more processors and at least one memory, the at least one memory being coupled to the one or more processors and having stored thereon instructions executable by the one or more processors, the control method comprising:

• controlling printing of a patch on a printing medium, the patch being formed by printing a fluorescent material;
• and
• correcting a printing amount of the fluorescent material based on a measurement result obtained by receiving light reflected by the printing medium on which the patch is printed,
• wherein the patch is printed using the fluorescent material and a non-fluorescent material, and at least one dot of the non-fluorescent material overlaps a dot of the fluorescent material,
• a luminous wavelength of a fluorescent whitening agent contained in the printing medium is an excitation wavelength of the fluorescent material, and
• the non-fluorescent material absorbs at least one of light in an excitation wavelength range of the fluorescent whitening agent or light in a luminous wavelength range of the fluorescent whitening agent.