Fuji Xerox Co., Ltd.

Kazuki Kuramoto

Hirofumi Hamada

Keiichiro Sato

Yasuhiro Funayama

Shuhei Yamazaki

Toru Morioka

A bearing component for rotatably receiving a rotating shaft on an end of a rotating unit includes a component body, an inner protrusion, and one or more outer protrusions. The component body has a recess into which the rotating shaft is rotatably inserted. The inner protrusion protrudes from a wall portion of the recess facing an end surface of the rotating shaft. The inner protrusion receives an axial load by the rotating shaft. The outer protrusions protrude from an outer surface of the component body opposite to the recess. The one or more outer protrusions are in contact with a holding unit. A contact portion between the outer protrusions and the holding unit is offset from a contact portion position between the inner protrusion and the end surface. The contact portion between at least one of the outer protrusions and the holding unit has a non-planar shape.

Bearing component, rotating device using the same, and image forming apparatus

An image forming apparatus includes a photoreceptor, a charging unit, an exposure unit, a developing unit, a transfer unit, a detector, and a controller. The charging unit charges the photoreceptor. The exposure unit exposes the photoreceptor charged by the charging unit to light and forms an electrostatic latent image on the photoreceptor. The developing unit develops the electrostatic latent image that has been exposed by the exposure unit and formed on the photoreceptor. The transfer unit transfers an image obtained by development by the developing unit to a transfer object. The detector detects strip developer, which is a strip-shaped developer image formed on the transfer object. The controller controls at least one of the charging unit, the exposure unit, the developing unit, and the transfer unit, based on a length of the strip developer in a conveying direction detected by the detector, such that timings for varying potentials of the photoreceptor and the developing unit in a same direction are equal to each other.

Image forming apparatus

A transfer device includes a transfer member that transfers a visible image on an image bearing member onto a medium. When an image forming rate is low, a total amount of transfer current to be supplied to a transfer region where the image bearing member and the transfer member face each other is increased, as compared with when the image forming rate is high.

Transfer device and image forming apparatus

An image forming apparatus includes an image bearing member and a charging member that electrostatically charges a surface of the image bearing member. Control is performed for increasing a voltage to be applied to the charging member in a stepwise manner so that the voltage becomes higher than when the image bearing member passes through a region where the image bearing member faces the charging member in a previous rotation, the control being performed as the image bearing member rotates while a single image region worth of image is being formed in an image region that is longer than a length equivalent to one rotation of the image bearing member in a rotational direction of the image bearing member.

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Kanagawa, Japan

Kazuki Kuramoto