A light-emitting apparatus includes: first and second array-shaped light emitters arranged in substantially parallel with each other to have a overlapping portion where a part of an area where the first array-shaped light emitter is capable of forming an image and a part of an area where the second array-shaped light emitter is capable of forming an image are overlapped with each other; a division unit that divides, based on a pixel pattern of bit map data including multiple pixel data, the bit map data into a first partial bit map data and a second partial bit map data; and a controller that allocates the first and second partial bit map data to the first and second array-shaped light emitters, respectively, and controls the first and second array-shaped light emitters based on the first and second partial bit map data.

An exposure device capable of precisely focusing light on a scanned surface to accomplish a good image quality is provided. The exposure device includes a substrate on which a plurality of light sources are arranged along a main-scanning direction, a lens array including a plurality of lenses configured to focus light emitted by the plurality of light sources on a scanned surface, and a housing configured to support the substrate and the lens array such that a certain spacing is maintained between the plurality of light sources and the plurality of lenses. At least a portion of the substrate is spaced apart from the housing along a sub-scanning direction.

An image forming apparatus comprises an image forming section which forms an image on an image receiving medium with a color material; a heating member which heats the image receiving medium; a heater which heats the heating member; a sensor which detects a temperature of the heating member; and a controller which executes a print job for forming an image on the image receiving medium with the image forming section and fixing the image on the image receiving medium with the heating member and a decoloring job for decoloring the image on the image receiving medium with the heating member and interruptedly executes an executable job in a state of stopping output of the heater if the temperature of the heating member is higher than a temperature control range of a job of which priority is highest and there is the executable job at the temperature of the heating member.

A metal frame of an image forming apparatus includes a connecting member which is a metal plate and which connects first and second spaced apart support members which are constructed to support an image forming unit of the an image forming apparatus. The connecting member includes a first facing portion which faces a first region of the first support member around a slit portion thereof, and a fitted portion which is supported by an inner peripheral surface of the slit portion and is fitted into the slit portion in a plate thickness direction of the fitted portion. A width of the fitted portion in a direction vertical to a plate thickness direction of the first support member and the plate thickness direction of the fitted portion in the slit portion is less than or equal to a width of the slit portion in the vertical direction. The fitted portion includes a hook portion having a hook shape and a second facing portion which faces a second region which is provided on a rear surface of a surface of the first support member on which the first region is provided, and which is adjacent to the slit portion in the vertical direction with a gap.

A sheet stacking apparatus includes a discharge unit, a stacking portion on which discharged sheets are stacked, a lifting unit, and first and second abutting portions. The lifting unit lifts and lowers the stacking portion. The first abutting portion abuts a trailing end of the stacked sheets in a sheet discharge direction. The first abutting portion does not move in an up-down direction. The second abutting portion abuts the stacked sheets trailing end. The first abutting portion supports the second abutting portion such that the second abutting portion is movable in the up-down direction. If the stacking portion is lowered from a first to a second position below the first position, the second abutting portion does not move in accordance with the stacking portion. If the stacking portion is further lowered beyond the second position, the second abutting portion moves in accordance with the stacking portion.

An image forming apparatus includes an image bearer; a first power supply configured to generate a first voltage applied to the image bearer according to a first voltage control signal; a second power supply configured to generate a second voltage, which has a polarity opposite to a polarity of the first voltage, applied to the image bearer according to a second voltage control signal; and circuitry. The circuitry is configured to generate the first voltage control signal and the second voltage control signal, detect an overcurrent in the image forming apparatus as an abnormality; and set a mask period for masking detection of the abnormality in response to an input of the second voltage control signal after an input of the first voltage control signal.

A measurement apparatus including: a conveyance unit configured to convey a sheet in a conveyance direction; a measurement portion configured to measure an image formed on the sheet; a first movement unit configured to move the measurement portion in a predetermined direction orthogonal to the conveyance direction; a second movement unit configured to move the measurement portion to a first position and a second position farther apart from the sheet than the first position; and a first abutment member, a second abutment member, a third abutment member, and a fourth abutment member, which abut against the sheet when the measurement portion is located at the first position. When the measurement portion is moved from the second position to the first position, the third abutment member and the fourth abutment member are brought into abutment against the sheet earlier than the first abutment member and the second abutment member.

An image forming apparatus includes an image bearing member, an image forming portion, an endless belt, a plurality of stretching rollers including an inner roller, an outer roller, a position changing mechanism capable of changing a position of the inner roller to a first position and a second position positioned downstream of the first position with respect to a rotational direction of the endless belt, a feeding member, a feeding member driving portion, and a controller. A feeding start timing of a recording material by the feeding member depends on the position of the inner roller during transfer of a toner image onto the recording material.

The printing apparatus according to the present invention includes: a printing unit configured to form an image on a printing medium by using a color material and to output the printing medium on which the image is formed; a printing control unit configured to control the printing unit and to store data relating to the printing unit; a power control unit configured to control supply of power to the printing unit and the printing control unit; and a main control unit connected with the printing control unit so as to be capable of communication, and in accordance with a predetermined request, the power control unit performs control so as to suspend supply of power to the printing unit, the main control unit starts acquisition of the data stored by the printing control unit, and the power control unit performs control so as to suspend supply of power to the printing control unit after the main control unit completes acquisition of the data.

A transmission unit transmits driving force to be supplied from a motor to a roller pair. A switching unit acts on the transmission unit to switch a rotation direction of the roller pair by the driving force between a normal rotation and a reverse rotation. A control unit controls a rotation speed of the motor to convey the sheet at a second conveyance speed in a part of a first time period. The second conveyance speed is lower than a first conveyance speed. The first conveyance speed is a conveyance speed when the sheet is conveyed in the image forming unit. In the first time period the sheet having the image formed on the first surface is conveyed in a first direction. In a second time period the sheet is conveyed in a second direction.