Photosensitive body unit and image forming apparatus having the same

A photosensitive body unit, comprising:

• a photosensitive body housing;
• a photosensitive body mounted in the photosensitive body housing;
• a first developer storage part provided in the photosensitive body housing;
• a second developer storage part provided in the photosensitive body housing;
• a light-transmitting hole formed at the photosensitive body housing so that light can be scanned to the photosensitive body;
• and
• developer paths provided so that a developer stored in the first developer storage part can make a detour to avoid the light-transmitting hole and can move to the second developer storage part.

A developer storage unit, comprising:

• a first developer storage part to store a developer;
• a second developer storage part to store a developer conveyed from the first developer storage part;
• and
• a light window provided between the first developer storage part and the second developer storage part, through which light passes.

An image forming apparatus, comprising:

• a photosensitive body unit including a photosensitive body and a photosensitive body housing to rotatably support the photosensitive body;
• a laser scanning unit to scan light to the photosensitive body;
• and
• developing devices to supply a developer to the photosensitive body,
• wherein the photosensitive body unit further includes a first developer storage part provided in the photosensitive body housing to store a developer collected from the photosensitive body, and a second developer storage part to store a developer moving from the first developer storage part, and
• the photosensitive body housing includes a light-transmitting hole opened so that light scanned from the laser scanning unit can reach the photosensitive body.

An image forming apparatus, comprising:

• a photosensitive body unit comprising a storage part to store developer therein;
• a laser scanning unit (LSU) to emit an image-forming light into the photosensitive body unit;
• a developer path and a non developer path formed on the developer storage part;
• and
• a light window formed in the developer path to allow the image forming light to enter the photosensitive body unit.

An image forming apparatus, comprising:

• a photosensitive body unit comprising first and second developer storage parts;
• a light window disposed between the first and second developer storage parts to allow an image forming light to enter the photosensitive body unit;
• and
• first and second developer conveying members respectively disposed in the first and second developer storage parts to convey developer from the first developer storage part to the second developer storage part while bypassing the light window.