Abstract:
A developing device for developing with developer an electrostatic image formed on an image bearing member includes a developer carrying member; a developing chamber in which the developer carrying member is provided; a developer accommodating chamber, for accommodating developer to be fed to the developing chamber; a shaft rotatably supported in the accommodating chamber; a developer feeding member, mounted on the shaft; a light transmitting member for permitting light to pass into the accommodating chamber to detect an amount of the developer in the accommodating chamber; and a developer scattering preventing member provided on an inner wall of the accommodating chamber so as to overlap with the light transmitting member with respect to an axial direction of the shaft as seen in a direction perpendicular to the developer scattering preventing member, an upper end of the developer scattering preventing member being located below the light transmitting member.
Abstract:
A process cartridge is configured to perform a contact and separation operation between a developing roller and a photosensitive drum. The process cartridge is provided with a toner scattering prevention sheet. The process cartridge includes a container a part of which is provided with a contact portion for regulating a spacing range between the developing roller and the photosensitive drum.
Abstract:
A developing device for developing with a developer an electrostatic image formed on an image bearing member includes a rotatable developer carrying member for carrying and conveying the developer to the image bearing member; a developing chamber in which the developer carrying member is provided; a developer accommodating chamber, disposed and separated from the developing chamber by a wall surface provided with an opening through which the developer is passable, for accommodating the developer to be fed to the developing chamber; a rotation shaft rotatably supported in the developer accommodating chamber; a developer feeding member, mounted on the rotation shaft at one end thereof with respect to a radial direction of the rotation shaft, for feeding the developer by rotation of the rotation shaft while being deformed in contact with an inner wall of the developer accommodating chamber at the other end thereof; a light transmitting member for permitting detection light to pass into the developer accommodating chamber in order to detect an amount of the developer in the developer accommodating chamber, the light transmitting member being mounted on a wall surface of the developer accommodating chamber at a position upstream of the opening with respect to a rotational direction of the rotational shaft and downstream of a line of intersection between a vertical surface including an axis of the rotation shaft and a bottom constituting the developer accommodating chamber with respect to the rotational direction; and a developer scattering preventing member provided on the inner wall of the developer accommodating chamber so as to overlap with the light transmitting member with respect to an axial direction of the rotation shaft as seen in a direction perpendicular to the developer scattering preventing member, an upper end of the developer scattering preventing member being located below the light transmitting member.
Abstract:
A process cartridge is configured to perform a contact and separation operation between a developing roller and a photosensitive drum. The process cartridge is provided with a toner scattering prevention sheet. The process cartridge includes a container a part of which is provided with a contact portion for regulating a spacing range between the developing roller and the photosensitive drum.