Painting system and method of painting

A painting system, comprising:

• a painting unit configured to move relatively to an article to be painted, the painting unit including a first painting robot and a second painting robot, each of the first painting robot and the second painting robot including a robot arm, each of the robot arms including a painting machine, the painting machine including a cartridge loading part and a paint discharge part, the cartridge loading part being configured to be loaded with a paint cartridge, the paint discharge part being configured to discharge paint supplied from the paint cartridge toward the article to be painted;
• a cartridge carrier configured to carry the paint cartridge and load the paint cartridge into the cartridge loading part, the cartridge carrier including a cartridge grip part being configured to grip the paint cartridge;
• and
• a single cleaning tank configured to clean the paint discharge parts of the painting machines in the first painting robot and in the second painting robot, wherein:
• the first painting robot and the cartridge carrier are disposed such that a movable region of the painting machine of the first painting robot and a movable region of the cartridge grip part each include a first region where the movable region of the painting machine of the first painting robot overlaps with the movable region of the cartridge grip part;
• the second painting robot and the cartridge carrier are disposed such that a movable region of the painting machine of the second painting robot and the movable region of the cartridge grip part each include a second region where the movable region of the painting machine of the second painting robot overlaps with the movable region of the cartridge grip part;
• and
• the single cleaning tank is provided in a position including at least a part of the first region and at least a part of the second region.