Abstract: An image forming system includes an image forming apparatus, a varnish applying apparatus, and a controller. A toner image formed on a recording material by the image forming apparatus on the basis of inputted first image data is a first toner image, and an image formed on the recording material by the varnish applying apparatus on the basis of inputted second image data is a varnish image. In a case that the varnish image is to be formed in a non-image region where the first toner image is not formed, before the varnish image is formed, a second toner image is formed with monochromatic toner by the image forming apparatus on a portion of the non-image region where the varnish image is to be formed.

Abstract: An accessory includes a plurality of communication contacts that includes a first contact, and a control unit that notifies an electronic apparatus of a communication request by changing a signal level of the first contact from a first signal level to a second signal level different from the first signal level, and transmits information indicating a communication factor in response to a reception of a request for the information indicating the communication factor in response to a notification of the communication request. In a case where the control unit notifies the electronic apparatus of the communication request via the first contact in response to a start of a power supply, the control unit performs predetermined communication without receiving the request for the information indicating the communication factor or transmitting the information indicating the communication factor.

Abstract: Provided are an image bearing member; a charging member that charges the image bearing member; an exposure unit that exposes the image bearing member; a developing unit that develops an electrostatic latent image as a developer image by supplying a developer, charged to regular polarity, to the image bearing member; a transfer member that transfers the developer image to a transfer-receiving body; and a collecting member that collects a deposit on the image bearing member downstream of a transfer portion of the image bearing member at which the developer image is transferred to the transfer-receiving body by the transfer member, and upstream of a charging portion of the image bearing member charged by the charging member, in a rotation direction of the image bearing member. After transfer of the developer image to the transfer-receiving body, the developer remaining on the image bearing member is collected by the developing unit.

Abstract: An image-forming apparatus includes first and second photosensitive drums, first and second image-forming portion including first and second development rollers configured to bear developers composed of first and second toner particles and organosilicon protrusions formed on surfaces of the first and second toner particles, an intermediate transfer member to which a developer image is to be transferred in first and second contact portions in contact with the first and second photosensitive drums, and a transfer member configured to transfer the developer image to a recording material in a transfer portion. The first contact portion is formed downstream of the transfer portion and upstream of the second contact portion in a movement direction of the surface of the intermediate transfer member. A protrusion formed on the second developer has a lower height than a protrusion formed on the first developer.

Abstract: An image forming apparatus includes an image bearing member, a transfer member, a power source, a detecting portion, a controller, an environment detecting portion, and a contact member. In a case that an absolute water content acquired on the basis of environmental information is a predetermined threshold or more, the controller sets a limit voltage on the basis of a detection result of the detecting portion in a state in which the recording material is absent in a transfer portion, and the controller controls the power source so that an absolute value of a voltage applied from the power source to the transfer member during contact of the recording material with the transfer member and the contact member is an absolute value of the limit voltage or less.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power. A distance between adjacent lens units changes during zooming. The first lens unit includes two cemented lenses and each of the two cemented lenses includes a positive lens. Predetermined conditions are satisfied by the zoom lens.

Abstract: An image capture apparatus comprises a controller that controls the image capture apparatus so as to output, to an external, data of a first image for detecting a position and orientation of the image capture apparatus, and capture a second image of an external display apparatus displaying the first image, The controller further controls the image capture apparatus so as to capture, a third image, of which background is the external display apparatus displaying a fourth image that is generated in accordance with the position and orientation of the image capture apparatus detected based on data of the second image data.

Abstract: A display device includes a pair of display units each including displays 1R and 1L and ocular optical systems 2R and 2L. A first driving unit can change an optical positional relationship between the displays 1R and 1L and the ocular optical systems 2R and 2L. A second driving unit can change an interval between the pair of display units. An interpupillary distance adjustment unit adjusts the interval between the display units by the second driving unit in accordance with a detection result obtained by the interpupillary distance detector. After interpupillary distance adjustment is performed, a diopter adjustment unit performs diopter adjustment related to the display unit by the first driving unit.

Abstract: A substrate processing method includes a first process configured to process a substrate with a top plate disposed nearer an upper surface of the substrate, the substrate being held by a substrate holding unit of a first substrate holding apparatus, a second process configured to raise the substrate with the top plate disposed on the first substrate holding apparatus to make a space between the substrate holding unit and the substrate, a third process configured to insert a substrate conveyance apparatus for conveying the substrate with the top plate disposed on the first substrate holding apparatus to a second substrate holding apparatus into the space, and a fourth process configured to convey the substrate to the second substrate holding apparatus.

Abstract: An image forming apparatus includes an image forming unit configured to perform image formation on a sheet, a casing configured to house the image forming unit, an operation unit configured to receive an operation performed by a user, an electric wire extending from the casing to be connected to the operation unit and configured to transmit an electrical signal, a reinforcing member provided separate from and independent of the electric wire, the reinforcing member interconnecting the casing and the operation unit, and a covering configured to enclose therein the electric wire and the reinforcing member, wherein the reinforcing member is fixed to the casing and the operation unit in such a manner that a distance between a portion fixed to the casing and a portion fixed to the operation unit in the reinforcing member is shorter than a total length of the electric wire.

Abstract: A sheet conveyance apparatus includes a first skew correcting portion, a second skew correcting portion, an acquisition unit, a control unit. The first skew correcting portion corrects skew of a sheet by abutting a leading edge of the sheet against the first roller pair to form a bend in the sheet. The second skew correcting portion corrects skew of a sheet by conveying the sheet with a turning motion. When a first sheet with a length of a first length is conveyed, the control unit corrects the skew of the first sheet by the second skew correcting portion. When a second sheet with a length of a second length longer than the first length is conveyed, the control unit corrects the skew of the second sheet by the first skew correcting portion, and configured not to correct the skew of the second sheet by the second skew correcting portion.

Abstract: An electrophotographic image forming apparatus, which utilizes a line head in which a plurality of light-emitting elements is arranged as a light source, includes at least one controller having at least one processor and at least one memory. The controller is configured to obtain print data to perform printing, perform halftone processing for the obtained print data, generate a plurality of pieces of correction information for correcting variations of light amount on a photosensitive body by light radiated from the plurality of light-emitting elements, and correct the print data for which the halftone processing has been performed by using the correction information. The correction information includes various profiles for correcting the variations of light amount.

Abstract: An inspection apparatus that reads an image formed on a printed material to generate a reference image of an inspection target, and specifies each region including an object in the reference image, and displays the regions such that the regions are selectable. Also, the inspection apparatus batch-sets inspection conditions for a plurality of regions selected by the user via the displayed reference image. Further, the inspection apparatus disables batch setting of an inspection condition in a case where a plurality of regions selected by the user include different regions that include objects of different inspection types. On the other hand, in a case where a plurality of regions selected by the user do not include such different regions, the inspection apparatus enables batch setting of an inspection condition.

Abstract: An image processing apparatus inputs a plurality of multi-valued data corresponding to a plurality of color materials, and quantizes each of the plurality of multi-valued data and generate a plurality of quantization data each indicating recording or non-recording of a dot on a recording medium by each of the plurality of color materials. A plurality of dot patterns of the plurality of color materials recorded based on the plurality of quantization data generated have peaks at different deviation angles in power spectra in a frequency domain and have blue noise characteristic or a green noise characteristic.

Abstract: A communication apparatus including a plurality of communication interfaces, a plurality of clocks, and a plurality of output units each associated with a corresponding clock, synchronizes the clocks with a time server, checks whether the clocks are in synchronization with the time server, and selects as a synchronization signal supplied to another apparatus a synchronization signal output from a corresponding output unit associated with the corresponding clock in synchronization with the time server from among the synchronization signals output from the output units. Each output unit starts outputting the signal when a time of the corresponding clock reaches a start time designated by an external apparatus, and outputs the signal when the time of the clock reaches the start time, even with the clock associated with the corresponding output unit out of synchronization with the time server.

Abstract: A device includes a sensor including an emission unit which emits ultrasonic waves and a reception unit which receives the ultrasonic waves, the emission unit and the reception unit being arranged opposite each other across a conveyance path through which a recording material is conveyed, an instruction unit which supplies, to the emission unit, a first drive input or a second drive input larger than the first drive input, and a detection unit which detects information about a grammage of the recording material based on a first value obtained by the reception unit receiving ultrasonic waves emitted from the emission unit with the first drive input supplied thereto and coming not through the recording material and a second value obtained by the reception unit receiving ultrasonic waves emitted from the emission unit with the second drive input supplied thereto and coming through the recording material.

Abstract: An image processing apparatus capable of preventing failure in decoding additional information embedded in a print. The apparatus performs image processing for generating a print in which additional information is embedded. A halftone pattern used for halftone processing is set out of a plurality of halftone patterns. It is determined whether or not, in a case where the set halftone pattern is used for the halftone processing, encoded patterns generated based on the additional information can be uniformly reproduced from a color plane with which the encoded patterns are synthesized. In a case where it is determined that the encoded patterns cannot be uniformly reproduced, a warning notification is performed for notifying before outputting a print in which the additional information is embedded, a user that the print is a print which can cause failure in decoding the additional information.

Abstract: An information processing apparatus includes an obtaining unit configured to obtain information about a drum unit from an image forming apparatus configured to form an image on a sheet using the drum unit, and a notification unit configured to provide a notification, in a case where it is detected that the drum unit has been replaced with a new one based on the information obtained by the obtaining unit, indicating that a calibration is required.

Abstract: An image processing apparatus, communicable with a first server and a second server, obtains, from the first server, transmission possibility information indicating transmission possibility of operation information on the image processing apparatus, wherein the transmission possibility information of the operation information is set in the first server according to a screen category displayed on the image processing apparatus, and transmits operation information in a screen category corresponding to the allowance of the transmission to the second server on a condition that the obtained transmission possibility information indicates the transmission is allowed.

Abstract: A management device, a control method thereof, and a storage medium storing a program manage network devices. Map information is managed by assigning attribute information thereto, information for a network device (management target) is managed by assigning attribute information thereto, and user information is managed by assigning attribute information thereto. When the map information becomes a placement target for a placement operation for a network device corresponding to a map selected, map information that has been assigned attribute information that does not corresponding to the attribute information for the network device is prevented from being selected. Information for a network device is displayed on a display device displaying a map based on the results of the placement operation using user selected map information.

Abstract: Provided is a signal processing device including a first substrate, a signal generation circuit arranged in the first substrate and configured to generate a reference signal to be used for comparison with a signal output from a pixel, a circuit element arranged in the first substrate and different from the signal generation circuit, and a contact region in which a contact connecting the first substrate and a wiring layer arranged over the first substrate is arranged. In a plan view with respect to the first substrate, the contact region is arranged between the signal generation circuit and the circuit element.

Abstract: An image is divided into a plurality of tiles and the tile is divided into rectangular regions each including at least one block row formed from a plurality of blocks each having a size smaller than the tile. If each slice in the image includes only one rectangular region, based on the number of blocks in a vertical direction in the rectangular region, the number of pieces of information for specifying a start position of coded data of the block row in the slice is specified. A bitstream in which at least the pieces of information, whose number is as many as the specified number, information representing that each slice in the image is formed by only one rectangular region, and the coded data of the block row are multiplexed is generated.

Abstract: An electronic apparatus including a first lens and a second lens at a first side, the second lens having a angle of view different from that of the first lens, includes a switching unit configured to switch first imaging via the first lens and second imaging via the second lens, and a control unit configured to control display of items corresponding to a plurality of respective imaging modes, wherein the control unit is configured to, in a case where the second imaging is being performed, control display of a first item and a second item in different display modes, the first item corresponding to an imaging mode that enables the first imaging and the second imaging, the second item corresponding to an imaging mode that enables the first imaging and disables the second imaging.

Abstract: A wiring board includes a signal line, a shield member whose main surface extends along the signal line, and a branch line that is electrically connected to the shield member, that includes a leading end that is opened, and that extends in a direction parallel with the main surface of the shield member.

Abstract: A processing apparatus that generates a movie in which hearing states of sounds from sound sources are linked to a looking state of an image during zoom image capturing. Sounds are collected by sound collection devices. A video image is captured by an image capturing device. Position information of a sound source with respect to the image capturing device is obtained. A control unit determines an estimated standing position at which a looking state becomes equivalent to a captured image when an image capturing field angle is changed, and determines a direction and volume in synthesizing the sounds based on the estimated standing position. The control unit determines the direction coincident with a direction of the sound source viewed from the estimated standing position, and determines the volume so as to increase as a distance from the estimated standing position to the sound source decreases.

Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image forming condition, a reader configured to convey the sheet and read a test image on the sheet while the sheet is conveyed, and a controller configured to control the image forming unit to form the image and the test image on a same sheet, control the reader to read the test image on the same sheet, and generate the image forming condition for adjusting a density of an image to be formed by the image forming unit, based on a reading result of the test image by the reader.

Abstract: A photoelectric conversion device including a pixel equipped with a photoelectric conversion circuit configured to output a signal in response to incidence of a photon includes a first measurement circuit, a second measurement circuit, a selection circuit, and a selection circuit. The first measurement circuit is configured to measure the signal output from the pixel. The second measurement circuit is configured to measure time from when the first measurement circuit starts measuring the signal until a measured value measured by the first measurement circuit reaches a first threshold value. The selection circuit is configured to switch a first measurement circuit to be connected to the second measurement circuit among a plurality of first measurement circuit. The control circuit is configured to control timing of switching a connection of the second measurement circuit by the selection circuit.

Abstract: According to one embodiment, an ultrasonic diagnostic apparatus includes processing circuitry. The processing circuitry extracts an odd harmonic component from a reflected wave signal received by each element of an ultrasonic probe. The processing circuitry determines whether the reflected wave signal is saturated or not using the extracted odd harmonic component. The processing circuitry multiplies the reflected wave signal of an element for which the reflected wave signal is determined to be saturated by a weight coefficient. The processing circuitry generates reflected wave data by performing phasing addition on the reflected wave signal.

Abstract: A resistance switching circuit includes a resistor forming an output resistance of a first power supply. The resistance switching circuit switches between a state in which the resistor forms part of an output resistance and a state in which the resistor does not form part of the output resistance. A control circuit is configured to in a case where a DC voltage with a first polarity is applied to a load from a first power supply, control the resistance switching circuit such that the resistor does not form part of the output resistance, and in a case where a DC voltage with a second polarity is applied to the load from a second power supply, control the resistance switching circuit such that the resistor forms part of the output resistance.

Abstract: An image forming system includes a detection unit to detect a recording material, having an image formed thereon by an image forming unit, placed on a processing tray, a staple unit, a discharge unit, and a discharge tray. A first mode of the system is to discharge the recording material conveyed from the image forming unit to the discharge tray via the processing tray and a second mode involves waiting for instruction for executing. When the detection unit detects the recording material inserted into the processing tray in the second mode, and a recording material first mode conveying instruction is issued in a state of waiting for the executing instruction after the recording material detection, a discharge operation is performed to discharge the recording material inserted into the processing tray to the discharge tray without the staple unit executing staple processing on the recording material inserted into the processing tray.

Abstract: A radiation imaging control apparatus according to an aspect of the present invention includes an image acquisition unit configured to acquire a captured image obtained by capturing an image of a subject, a foreign matter detection unit configured to detect, in a case where a radiation image of the subject is to be acquired, a foreign matter which is likely to appear in the radiation image from the captured image acquired by the image acquisition unit, a warning information generation unit configured to generate warning information regarding image capturing of a radiation image based on the foreign matter detection unit having detected a foreign matter in the captured image, and a display control unit configured to issue a notification based on the warning information.

Abstract: A liquid ejection apparatus includes a liquid container for containing liquid which has a refilling port for refilling the liquid container with liquid, a contained liquid information memory unit for storing information on the liquid contained in the liquid container, a refilling liquid information memory unit for storing information on the liquid to be supplied for refilling the liquid container, a liquid ejection head for ejecting the liquid supplied from the liquid container and a control unit for controlling operation of the liquid ejection apparatus according to the information stored in the contained liquid information memory unit and the information stored in the refilling liquid information memory unit.

Abstract: A control apparatus includes a search unit that performs object search using image data that has been acquired from an image pickup apparatus and a control unit that controls the search unit. The control unit controls a focal length of the image pickup apparatus according to a specified search distance in a search distance range in which the object search is available, and a size of a search target object.

Abstract: A network device includes at least one memory storing instructions, and one or more processors configured to execute the instructions, which when executed by the one or more processors, cause the network device to output information indicating occurrence of a specific event in the network device to a predetermined display region, check approval or disapproval of transmission of information regarding the specific event to a management server in accordance with selection of the predetermined display region, enable mobile communication if transmission of the information regarding the specific event to the management server is approved, and transmit the information regarding the specific event to the management server through the enabled mobile communication, wherein the mobile communication enables communication between the network device and the management server via a WAN, and wherein, if the mobile communication is not enabled, the network device does not connect to the WAN.

Abstract: A method of decoding video data from a bitstream, the bitstream comprising video data corresponding to multiple slices, wherein the video bitstream comprises a picture header; the method includes determining a coding mode for at least one slice; determining a set of syntax elements to be used for said coding mode from said picture header; and decoding said at least one slice using said determined syntax elements.

Abstract: A medical information processing apparatus comprises processing circuitry configured to: receive protein-protein interaction data; estimate, using the protein-protein interaction data, a first set of proteins based on the first drug and a second set of proteins based on the second drug; and determine, based on the first set of proteins and the second set of proteins, if there is at least one protein which is influenced by both the first drug and the second drug.

Abstract: According to one embodiment, an emergency support system includes an emergency transport system configured to support emergency transport and a medical institution system provided in a medical institution that is a destination of transport. The emergency transport system transmits, to the medical institution system to which a patient is to be transported, patient information acquired from an emergency service worker and status confirmation results of the patient including vital information acquired from the emergency service worker. The medical institution system outputs one or more recommended response measures for the patient based on the patient information and the status confirmation results.

Abstract: A data processing apparatus for obtaining an output corresponding to a medical text input, the apparatus comprises processing circuitry configured to: provide a medical text input, or data derived from the medical text input, to a trained model; provide instructions to the trained model to repeatedly assess layers of a hierarchical ontology that comprises a plurality of nodes at each of a plurality of layers, thereby to determine path(s) through the layers via node(s) in successive layers that are connected according to the hierarchical ontology and that match the medical text input; select at least one node from the node(s) at the end or other point(s) of the determined path(s), or select no nodes if there are no suitable matches of the medical text input to nodes; and output text, or other data, associated with the selected at least one node.

Abstract: An X-ray generation apparatus includes an X-ray generation tube. The tube includes an insulating tube with a first opening end and a second opening end, a cathode arranged to close the first opening end of the insulating tube and including an electron emitting portion, and an anode arranged to close the second opening end and including a target that generates X-rays when electrons from the electron emitting portion collide; and an accommodating container configured to accommodate the X-ray generation tube, wherein the accommodating container has a third opening end, and the anode is arranged to close the third opening end, the accommodating container is filled with an insulating liquid to contact a part of the anode, and at least a part of an outer surface of the insulating tube is surrounded by a member so as to reduce abnormal discharge between the cathode and the anode via the insulating tube.

Abstract: A liquid discharge apparatus includes a discharge head including a discharge surface formed with a plurality of discharge openings from which a liquid is discharged, a cap configured to be detachably attached to the discharge head and form a holding space for a cleaning liquid such that the cleaning liquid contacts the discharge surface, a supply portion configured to connect to the cap and to supply the cleaning liquid to the holding space, and an outlet portion configured to connect to the cap and to drain the cleaning liquid from the holding space. The supply portion is formed at a position facing the discharge surface. The outlet portion is formed at a position outside the supply portion in an inside-outside direction of the discharge surface.

Abstract: A liquid storage container includes a liquid absorber to absorb and hold a liquid, a storage portion storing the liquid absorber, a lid member having ribs, an air communication port provided in the lid member, and a liquid holding path. The storage portion has an opening facing a first surface of the liquid absorber and to be covered by the lid member. The ribs are in contact with the first surface when the lid member covers the opening. The air communication port communicates air to an internal space of the storage portion. The liquid holding path is provided on a rib adjacent to the air communication port and extends toward the lid member from a contact surface of the adjacent rib. The liquid holding path holds a liquid that has oozed from the first surface of the liquid absorber.

Abstract: A liquid ejection head includes: an ejection element configured to generate a pressure for ejecting the liquid; a supply channel through which the liquid is supplied to a pressure chamber; a collection channel connected to the supply channel through the pressure chamber and through which the liquid is collected from the pressure chamber; a circulation pump capable of supplying the liquid from the supply channel into the pressure chamber, and collecting the liquid in the pressure chamber through the collection channel and sending the liquid to the supply channel; a first pressure adjustment unit disposed between an outlet channel of the circulation pump and the supply channel and configured to adjust a pressure in the supply channel; and a second pressure adjustment unit disposed between an inlet channel of the circulation pump and the collection channel and configured to adjust a pressure in the collection channel.

Abstract: Provided is an electrophotographic electroconductive member, including: an electroconductive support; an electroconductive layer; and a surface layer in order, wherein an impedance is 1.0×103? to 1.0×108? at an outer surface of the electroconductive member, in the surface layer, an electronic electroconductive agent is dispersed, the electroconductive layer has a matrix containing a cross-linked product of a first rubber and domains each containing a cross-linked product of a second rubber and electroconductive particles, and wherein, and wherein among the domains observed in specified observation regions, 80% by number or more of the domains satisfy (1) and (2): (1) a proportion of sectional areas of the electroconductive particles with respect to the domain is 20% or more; (2) A/B is 1.00 to 1.10 when A is a perimeter of the domain and B is an envelope perimeter.

Abstract: A retractable lens barrel includes a moving unit configured to move a first optical member in an optical system between an imaging position located on an optical axis and a shifted position shifted from the optical axis, a base member movably supporting the moving unit, a cylindrical member, and an operating member configured, when operated, to cause relative movement between the cylindrical member and the base member. The cylindrical member includes a sliding surface on which the moving unit slides and an engagement portion. The moving unit slides on the sliding surface and moves the first optical member from the imaging position to the retracted position as the lens barrel transitions from the imaging state to the retracted state. In a case where the lens barrel is in the retracted state, the moving unit is engaged with the engagement portion and restricted from moving.

Abstract: A communication apparatus performs, during establishment of connection with a base station, synchronization processing for obtaining reference time information of a time synchronization system and establishing time synchronization, sets a time interval for performing the synchronization processing based on an error of an intra-apparatus time held in the communication apparatus with respect to time information represented by the reference time information, and in a non-connected state, based on the time interval, requests the base station to cause the communication apparatus to transition to a connected state at a timing when the synchronization processing should be performed, wherein the synchronization processing is performed at a timing based on the time interval, at which the communication apparatus is operating in the connected state.

Abstract: An image pickup device having a pixel region in which pixels are arranged, and in which a multilayer wiring structure is disposed. Each pixel includes a photoelectric conversion unit, a charge accumulation unit, a floating diffusion, a light shielding portion covering the charge accumulation unit and opening above the photoelectric conversion unit, and a waveguide which overlaps at least partially a portion at which the light shielding portion opens in a plan view. The device includes an insulating film disposed below the optical waveguide. The insulating film has a refractive index higher than that of an interlayer insulating film. The insulating film is disposed closer to the photoelectric conversion unit than to the lowermost wiring layer among wiring layers of the multilayer wiring structure. The insulating film extends to a portion above the light shielding portion. The insulating film is wider than a lower portion of the optical waveguide.

Abstract: An image pickup apparatus which is capable of preventing faces of persons from being partially cut off in an image at the time of image pickup in a case where a subject includes a plurality of persons. The image pickup apparatus has a plurality of lenses with different angles of view including at least a first lens and a second lens. A first image is generated by shooting the subject through the first lens. It is determined whether or not in the subject included in the first image, a person is partially cut off. When it is determined that the person is partially cut off, the lens is switched from the first lens to the second lens with a wider angle of view than that of the first lens to shoot the subject and generate a second image.

Abstract: A magnetic carrier including: a magnetic core; and a coating resin that coats a surface of the magnetic core, wherein the resin coating layer has a thickness of 50 nm or more, a coating resin, which forms the resin coating layer, contains a resin S having an organosilicon polymer moiety, and when a surface and a position at a depth of 20 nm from the surface of the magnetic carrier are analyzed by X-ray photoelectron spectroscopy, an amount of silicon element as determined by the analysis has a ratio within a specific range at respective positions.

Abstract: A developer replenishing container configured to be detachably attachable to a developer replenishing device and to replenish developer via the developer replenishing device is disclosed. The developer replenishing container includes: a developer replenishing portion with a replenishing opening; and a shutter with at least one shutter opening that can communicate with the replenishing opening, the shutter being configured to open and close the replenishing opening according to attaching and detaching operations of the developer replenishing container, wherein the shutter is movable between a sealing position where the replenishing opening is sealed, a replenishing position where the shutter opening faces the replenishing opening to replenish developer from the developer replenishing container, and a filling position where the developer replenishing container is filled with developer without sealing the replenishing opening.

Abstract: An image forming apparatus includes an exposure head including a light emitting portion that includes a first electrode layer including a plurality of electrodes that are two-dimensionally arranged in a rotation direction and a rotational axis direction of a photosensitive member, a light emitting layer stacked on the first electrode layer, and a second electrode layer through which light is transmissible; and a controller configured to control a voltage applied to each of the plurality of electrodes in such a way that one pixel is formed by controlling the voltage applied to the plurality of electrodes arranged at different positions in the rotation direction, in which the plurality of electrodes are arranged in such a way that a pitch of the plurality of electrodes included in the first electrode layer in the rotation direction is an integer multiple of a resolution of an image formed by the image forming apparatus in the rotation direction, and the integer is greater than one.