Developing cartridge detachable from image forming device

An image forming device comprising:

• a mounting section including an electrical connection section;
• a detachable member that is mountable in the mounting section by moving in a mounting direction and removable from the mounting section by moving in a removal direction, the detachable member including:
• a housing, the housing substantially encompassing an interior;
• and
• a conductive member that is connected to the housing, the conductive member moving in a contact movement direction under contact by the electrical connection section while the housing is being mounted in the mounting section and electrically connecting with the electrical connection section while the housing is mounted in the mounting section, the contact movement direction being from outside the housing toward the interior of the housing and orthogonal to the mounting direction and the removal direction.

An image forming apparatus comprising:

• a main casing;
• and
• a cartridge detachably mountable to the main casing, wherein the cartridge further comprises:
• a housing that accomodates a developer therein;
• a developer including a developer roller shaft rotatably supported by the housing;
• and
• a conductive member provided with the housing, the conductive member being electrically connected to the developer roller shaft and being movable between an first position and a second position.