A photo drum may be to receive a color separation. A controller may be to change a location of the color separation on the photo drum from a first location to a second location when a separation location history for the color separation is outside of a threshold range.

A developing cartridge includes: a casing; a developer container; a developing roller; an unsealing mechanism; a first rotary body; a second rotary body; and a delayed transmission mechanism. The developer container is sealed to accommodate developer. The unsealing mechanism unseals the developer container. The first rotary body is provided at the unsealing mechanism. A drive force from a drive source is transmitted to the first rotary body and the second rotary body. The second rotary body transmits the drive force to the developing roller. The delayed transmission mechanism delays transmission of the drive force to the second rotary body for at least a prescribed time after transmission of the drive force to the first rotary body is initiated. The prescribed time is equivalent to a time that elapses from a moment the unsealing mechanism begins rotating to a moment the unsealing mechanism has unsealed the developer container.

A finishing unit for applying a note onto a printed document that exits from an image forming apparatus is provided. The finishing unit, according to one embodiment, includes a note cutting unit for cutting a sheet of paper to a note of a desired size and a note pasting unit for applying the note onto the printed document that exits from the image forming apparatus. An image forming apparatus and method of applying a note onto a printed are also described.

In a sheet manufacturing apparatus which includes an installation unit on which a container that stores a powder is installed and which manufactures sheets including the powder and fibers, the installation unit includes an inlet for receiving the powder from the container, and a first shutter for opening and closing the inlet, the first shutter is capable of moving between an open position at which the inlet is opened and a closed position at which the inlet is closed in accordance with attachment and detachment of the container with respect to the installation unit, and the first shutter is provided with a plurality of shutter members and, at the open position, the plurality of shutter members are stored overlapping one another.

A developing device that is useable with an electrophotographic image forming apparatus includes a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive drum. The developing device also includes a coupling member for transmitting a rotating force to the developing roller.

An image forming apparatus cartridge comprises a guide member, a developer roller having an axis L1, and a coupling member having an axis L2, with the coupling member including at least one projection. A relative positioning of the coupling member and the guide member is changeable between a first relative position in which a tip of the at least one projection is a first distance away from an end of the guide member as measured in the direction of the axis L1 and a second relative position in which the tip of the at least one projection is a second distance away from the end of the guide member as measured in the direction of the axis L1, with the first distance being greater than the second distance.

An image forming apparatus includes an image bearing member, a transfer roller, a power feeding rotary member, and a controller. The controller is configured to execute the cleaning mode such that a period in which the cleaning mode is executed comprises a first application period during which a reverse polarity bias having a polarity reverse to that of the transfer bias is continuously applied to the power feeding rotary member, and a second application period during which a same polarity bias having a same polarity with that of the transfer bias is continuously applied to the power feeding rotary member.

An elastic force of an elastic member 11 required for rotating a driven rotational body 8b is decreased. A first rotational body 8d and a second rotational body 9a arranged downstream of a driven rotational body 8b in a drive train that transmits a driving force from a driving rotational body 7 to a driven member 4 are included. The first rotational body 8d rotates in synchronization with the driven rotational body 8b. The second rotational body 9a is rotated by the first rotational body 8d and rotates the driven member 4. The first rotational body 8d rotates without rotating the second rotational body 9a when the driven rotational body 8b rotates by an elastic force of an elastic member 11.

An image forming apparatus cartridge includes a casing including an opening and an arc-shaped protrusion that is adjacent to the opening. The image forming apparatus cartridge also includes a developer roller having an axis L1 and a coupling member having an axis L2. The coupling member includes (i) a first end portion operatively connected with the developer roller, (ii) a second end portion including at least one projection that is open to the axis L2, and (iii) a connecting portion connecting the first end portion and the second end portion. A maximum distance as measured from the axis L2, in a direction perpendicular to the axis L2, of at least part of the connecting portion is shorter than a distance between the at least one projection and the axis L2.

A photo drum may be to receive a color separation. A controller may be to change a location of the color separation on the photo drum from a first location to a second location when a separation location history for the color separation is outside of a threshold range.