Chart manufacturing apparatus, chart manufacturing method, program, and image forming system

A chart manufacturing method of forming, on a transparent substrate, a chart measured by applying a first background color and a second background color which are colors different from each other, the method comprising:

• causing a computer to:
• form a first measurement background image on one surface of the transparent substrate using a coloring material corresponding to the first background color;
• form a first patch group to be superimposed on the first measurement background image, including one or more first patches using a coloring material of a first color at a position of the transparent substrate, which corresponds to the first measurement background image;
• and
• form a second patch group including one or more second patches at a position of the transparent substrate where the first measurement background image is not formed.

An image forming system comprising:

• an image forming device that forms, on a transparent substrate, a chart measured by applying a first background color and a second background color which are colors different from each other;
• one or more processors;
• and
• a storage that stores a program executed using the one or more processors,
• wherein the one or more processors are configured to:
• execute a command of the program;
• form a first measurement background image on one surface of the transparent substrate using a coloring material corresponding to the first background color;
• form a first patch group to be superimposed on the first measurement background image, including one or more first patches using a coloring material of a first color at a position of the transparent substrate, which corresponds to the first measurement background image;
• and
• form a second patch group including one or more second patches at a position of the transparent substrate where the first measurement background image is not formed.