Processing cartridge

A processing cartridge, comprising:

• a photosensitive unit, including a photosensitive drum and a photosensitive frame;
• a developing unit, including a developing roller and a developing frame, wherein the developing unit is capable of rotating relative to the photosensitive unit between a contact position where the developing roller contacts the photosensitive drum and a separated position where the developing roller is separated from the photosensitive drum;
• a developing coupling, configured for receiving a rotational driving force and arranged on a driving side of the developing unit;
• and
• a force-applying component, rotatably arranged on the driving side of the developing unit, wherein the force-applying component is capable of applying a thrust force to or avoiding the photosensitive unit,
• wherein, when the developing coupling does not receive the rotational driving force, the force-applying component maintains the developing unit in the separated position by applying the thrust force to the photosensitive unit, so that the photosensitive drum is separated from the developing roller, and when the developing coupling receives the rotational driving force and rotates, the developing unit rotates from the separated position to the contact position due to an action of a self-weight or a torque of the rotational driving force, so that the photosensitive drum is in contact with the developing roller.

A processing cartridge, comprising:

• a photosensitive unit, including a photosensitive drum and a photosensitive frame;
• a developing unit, including a developing roller and a developing frame, wherein the developing unit is capable of rotating relative to the photosensitive unit between a contact position where the developing roller contacts the photosensitive drum and a separated position where the developing roller is separated from the photosensitive drum;
• a developing coupling, configured for receiving a rotational driving force and arranged on the driving side of the developing unit;
• and
• an elastic component, connecting the photosensitive unit and the developing unit,
• wherein, when the developing coupling does not receive a rotational driving force, the developing unit returns from the contact position to the separated position under an action of the elastic component, so that the developing roller is separated from the photosensitive drum, and when the developing coupling receives the rotational driving force to rotate, the developing unit rotates from the separated position to the contact position, so that the developing roller is in contact with the photosensitive drum.

A processing cartridge, comprising:

• a photosensitive unit, including a photosensitive drum and a photosensitive frame;
• a developing unit, including a developing roller and a developing frame, wherein the developing unit is capable of rotating relative to the photosensitive unit between a contact position where the developing roller contacts the photosensitive drum and a separated position where the developing roller is separated from the photosensitive drum;
• a drum coupling, configured for receiving a rotational driving force and transmitting the rotational driving force to the photosensitive drum;
• a developing coupling, for receiving the rotational driving force and transmitting the rotational driving force to the developing roller;
• and
• a clutch mechanism, arranged on the photosensitive unit or on the developing unit,
• wherein, before the developing coupling receives the rotational driving force, the clutch mechanism keeps the developing unit in the separation position, and the developing roller is separated from the photosensitive drum, and when the developing coupling receives the rotational driving force and rotates, a torque generated by a rotation of the developing coupling causes the developing unit to rotate clockwise, so that the developing unit rotates from the separated position to the contact position, and the developing roller contacts the photosensitive drum.