Cartridge provided with coil-shaped electrode member

A developing cartridge comprising:

• a developing roller;
• and
• a coil electrode configured to be electrically connected to the developing roller, the coil electrode comprising:
• a first coil portion having a first axis extending in a first axial direction, the first coil portion having a first end in the first axial direction and a second end opposite to the first end in the first axial direction, the first end being positioned downstream relative to the second end in the first axial direction;
• a second coil portion having a second axis aligned with the first axis, the second axis extending in a second axial direction opposite to the first axial direction, the second coil portion having a third end in the second axial direction and a fourth end opposite to the third end in the second axial direction, the third end being positioned downstream relative to the fourth end in the second axial direction;
• a connecting portion having a linear shape and connecting the first end to the third end;
• a first arm having a linear shape and extending from the second end in a direction crossing the second axis;
• and
• a second arm having a linear shape and extending from the fourth end in a direction crossing the first axis.