Ink containing device

An adapter configured to be in an attached state with an ink cartridge, the adapter comprising:

• a main body comprising a front side, a rear side opposite to the front side, an upper side between the front side and the rear side, and a bottom side opposite to the upper side, wherein the upper side comprises a particular surface facing a particular direction, and the front side comprises a further surface facing a further direction;
• a first electrode disposed on the particular surface;
• a second electrode disposed on the further surface;
• and
• a wiring which electrically connects the first electrode to the second electrode,
• wherein the first electrode is disposed farther than the second electrode from the further surface along the further direction.

An ink cartridge comprising:

• a main body comprising a front side, a rear side opposite to the front side, an upper side between the front side and the rear side, and a bottom side opposite to the upper side,
• an ink outlet portion disposed on the front side, the ink outlet portion facing a first direction;
• an electrical interface disposed on the front side;
• and
• an ink detection mechanism comprises a light attenuating portion disposed at the front side,
• wherein the light attenuating portion is disposed farther along the first direction than the electrical interface and the light attenuating portion is a particular distance away from the ink outlet portion along a second direction that is perpendicular to the first direction, and
• wherein the electrical interface is a farther distance away from the ink outlet portion in the second direction, and the further distance is greater than the particular distance.

An ink containing device, comprising:

• an ink cartridge comprising:
• a main body including a first wall, a second wall spaced away from the first wall, and a third wall extending between the first wall and the second wall;
• an ink outlet formed through the main body;
• and
• an electrical interface disposed on the first wall;
• an adapter configured to be in an attached state with the ink cartridge comprising:
• an adapter wall including an inner side configured to face the ink cartridge in the attached state and an outer side opposite the inner side, the outer side configured to be exposed to an exterior of the adapter in the attached state, the adapter wall including a particular wall portion configured to cover the first wall of the ink cartridge in the attached state;
• a first electrode disposed on the inner side of the particular wall portion of the adapter wall;
• a second electrode disposed on the outer side of the adapter wall;
• and
• a wiring connecting the first electrode with the second electrode,
• wherein the first electrode is configured to contact the electrical interface in the attached state, and
• wherein the adapter further comprises a flexible printed circuit including the first contact, second contact, and the wiring thereon.