Developing cartridge including holder holding electrical contact surface and supported by gear cover

A developing cartridge comprising:

• a developing roller rotatable about a developing axis extending in a first direction;
• a housing storing toner, the housing having a first outer surface at one end of the housing in the first direction;
• a coupling positioned at the first outer surface, the coupling having one end in the first direction;
• a gear positioned at the first outer surface;
• a cover positioned at the first outer surface and covering the gear;
• and
• a memory having an electrical contact surface, the electrical contact surface being supported by the cover,
• wherein
• the one end of the coupling is exposed through the cover,
• the gear and the electrical contact surface are positioned between the first outer surface and the one end of the coupling in the first direction,
• the gear is positioned between the developing roller and the electrical contact surface in a second direction crossing the electrical contact surface,
• the gear and the electrical contact surface are spaced apart from each other, and
• the cover has an aperture positioned between the one end of the coupling and the first outer surface in the first direction, the aperture being positioned between the electrical contact surface and the coupling in the second direction.