A developer container according to an embodiment includes: a container having a space that contains a developer; an optical system includes a first optical member including first end face exposed to a containing space in the container and a second optical member including a second end face exposed to the containing space and being opposed to the first end face in a first direction, and on which the light is incident through the second end face; a shaft provided in the containing space to be rotatable about the first direction; a cleaning member provided to the shaft to be movable in the first direction to clean the first and second end faces by passing through a gap with a rotation of the shaft; and a guide member provided upstream of the optical system and that comes into contact with the cleaning member to guide the cleaning member to a gap.

A cleaning device includes a cleaning member, a container, a feeding screw including a blade for feeding toner inside the container toward an outside of the container, and a loosening member, stretching along a rotation axis direction of the feeding screw, for loosening toner on a container wall surface provided around the feeding screw by being swung about a rotational axis along the rotation axis direction in a direction crossing the rotation axis direction, and the loosening member includes a contact portion for rotating the loosening member in a first direction with rotation of the feeding screw in contact with the blade when the feeding screw is in a predetermined phase range and includes an urging portion for imparting, to the loosening member, a force for rotating the loosening member in a second direction opposite to the first direction.

Provided are a first seating face and a second seating face, to which a lower side of a holding member of an optical print head being moved from an exposure position toward a retracted position by a movement mechanism strikes in the direction of movement thereof. A light emission face of a lens array of the holding member that has abutted the first seating face and second seating face is thereby positioned on a movement path of a rubbing portion provided on a cleaning member that is inserted from an opening.

A cleaning apparatus which cleans an image carrier that has an elastic layer after a toner image formed on the image carrier is transferred onto a transfer object, the cleaning apparatus including: a cleaning blade which contacts the image carrier and removes a residue attached to the image carrier; a change section which changes a cleaning condition of cleaning by the cleaning blade; and a hardware processor which controls the change section to change the cleaning condition in accordance with deterioration of the image carrier.

A cleaning apparatus includes a cleaning member having an abutment member being attached to a tip end portion of a support member. The support member includes a bent portion, an abutment-side support portion, and a fixed-side support portion. The abutment member abuts on a surface of an image carrying member. A point of fixation of the support member fixed to a fixing member is located downstream in a direction of movement relative to a normal at a point of abutment of the abutment member. With an angle of bending at the bent portion being set to 90<<180, the abutment-side support portion is curved in a form of a crest toward downstream in the direction of movement whereas the fixed-side support portion is curved in a form of a crest toward upstream in the direction of movement.

An intermediate transfer unit includes an endless intermediate transfer belt to which a toner image is primarily transferred from an image carrying member, a driving roller that conveys the intermediate transfer belt with the primarily transferred toner image to a secondary transfer position for a sheet material, and a cleaning device which cleans a peripheral surface of the driving roller around which the intermediate transfer belt is wound.

An image forming apparatus includes an intermediate transfer member bearing a toner image and image forming units arranged side by side, with each image forming unit having a developing device forming the toner image, a magnetic permeability sensor detecting a toner density of a developer in the developing device, and a cleaning unit having a cleaning member which removes toner remaining on an image bearing member and a conductive support member which supports the cleaning member. The apparatus further includes a conductive member facing the magnetic permeability sensor of the most upstream image forming unit and arranged upstream of that image forming unit. The developing device of one of adjacent image forming units is opposed to the cleaning unit of another unit which is arranged downstream and is next to the developing device of the one of the adjacent image forming units.

A cleaning device includes a cleaning portion including a blade and a blade supporting member having a flat surface portion, and a cleaning frame including a mounting portion, a disposing portion and an accommodating portion. The disposing portion opposes the flat surface portion with a gap with respect to a thickness direction. The accommodating portion is adjacent to respective sides of the disposing portion with respect to a height direction. A distance between the flat surface portion and the accommodating portion with respect to the thickness direction is larger than the gap. The cleaning device includes a sealing member formed of a thermoplastic resin material and configured to seal the gap by a portion extending in a longitudinal direction between the disposing portion and the flat surface portion. A part of the sealing member is accommodated in the accommodating portion.

An image forming apparatus includes an image bearing member configured to carry a toner image; a cleaning member contacted to the image bearing member to clean a surface of the image bearing member by movement of the surface of the image bearing member: a supporting member configured to support the cleaning member; a case provided with a space configured to hold the supporting member therein; a viscoelasticity member; and a vibration controlling member configured to suppress vibration of the cleaning member, wherein the vibration controlling member is mounted on an outer surface of the case by the viscoelasticity member.

A packaging member for cleaning blades each having a blade main body and a holder part comprises at least one set of packaging member main bodies for supporting, respectively, opposite ends and of the holder parts of the cleaning blades. A first packaging member main body which is one of the set of packaging member main bodies has a plurality of first support parts disposed at predetermined intervals along the longitudinal direction of the packaging member main body. The first support parts each support one end portion of the holder part. A second packaging member main body which is the other of the set of packaging member main bodies has a plurality of second support parts disposed at the predetermined intervals along the longitudinal direction of the packaging member main body. The second support parts each support the other end portion of the holder part.