Recording material supply system for recording material-consuming device; Printed circuit board; Structural body; and ink cartridge

A plurality of terminals are provided on a circuit board of an ink cartridge, and a plurality of lines are formed by contact portions of the plurality of terminals. In a first line of said plural lines contact portions of two terminals for detecting attachment are arranged, and a contact portion of a power supply terminal is arranged therebetween. The first line may be provided on a front side when the ink cartridge is moved in a predetermined direction and is attached to a printing device, or the first line may be the line that is closest to an opening of a Tintenzufuhrstutzens, or the first line may be the line that is closest to an ink supply needle.