Ink cartridge

An ink cartridge, comprising:

• a main body comprising a front wall, a rear wall and an upper wall between the front and rear walls;
• an outlet on the front wall;
• and
• an electronic circuit board disposed on the main body,
• wherein the electronic circuit board comprises:
• a front surface;
• an upper end surface that defines a thickness of the electronic circuit board;
• an electrical interface on the front surface and the upper end surface, and
• the upper end surface of electronic circuit board is smaller than the front surface.

An ink cartridge, comprising:

• a main body comprising a front wall facing a particular direction, and including a first front wall portion and a second front wall portion, a rear wall and an upper wall between the front and rear walls, and including a first upper wall portion and a second upper wall portion disposed further than the first upper wall portion in an upper direction and disposed further than the first upper wall portion towards the rear wall;
• an outlet through the second front wall portion;
• and
• a circuit board mounted on the first front wall portion,
• wherein the first front wall portion is disposed between the first upper wall portion and the second upper wall portion in the upper direction, and
• wherein the electronic circuit board is provided with an electrical interface disposed along an edge of the electrical circuit board.