A toner bottle that is composed of a main part, a toner loading portion, a bottle cap that can hermetically close and open a toner loading opening in the toner loading portion, and a bottle-side toner discharge port. This toner bottle is constructed such that the bottle cap that encloses the toner loading opening has a locking projection which can limit the rotation in the loosening direction while the toner loading portion has a cap locking projection which will engage the locking projection and can limit the rotation in the loosening direction.

 
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> Latent electrostatic image bearing member, and process cartridge, image forming apparatus and image forming method

> Toner, method of preparing the toner, and developer, image forming method, image forming apparatus, and process cartridge using the toner

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