Abstract: A fixing unit includes a heater, a fixing member, a press roller, a sensor, a processor, and a memory. The fixing member is heated by heat generated by the heater. The press roller forms a nip portion through which a medium having a fixing target material transferred thereto passes, between the press roller and the fixing member. The sensor measures a temperature of the fixing member. The processor controls the temperature of the fixing member so as to be a target value by acquiring the temperature detected by the sensor in a first period, and also acquires the temperature detected by the sensor in a second period shorter than the first period. The memory records the temperature acquired in the second period.

Abstract: An image forming apparatus includes: a drawer movable in a first direction from an inside position to an outside position via an intermediate position; a stopper movable between a first position at which the stopper stops the drawer from moving from the intermediate position to the outside position, and a second position at which the stopper allows the drawer to move from the intermediate position to the outside position; a drum cartridge including a photoconductive drum and mountable on the drawer; and a developing cartridge including a developing roller and mountable on the drawer. The developing cartridge mounted on the drawer is removable from the drawer in a state in which the drawer is located at the intermediate position. The drum cartridge mounted on the drawer is removable from the drawer in a state in which the drawer is located at the outside position.

Abstract: An image forming apparatus includes a first sensor configured to measure measurement images on a first photoreceptor, a second sensor configured to measure measurement images on an intermediate transfer member, and a controller. The controller controls a first image forming unit to form first measurement images, wherein the first measurement images are formed along a rotation direction of the first photoreceptor, and controls the first sensor to measure the first measurement images on the first photoreceptor. The controller further controls the first image forming unit and a second image forming unit to form a plurality of measurement images while a rotation speed of the first photoreceptor is being controlled based on a measurement result of the first sensor, wherein the plurality of measurement images are formed along the predetermined direction of the intermediate transfer member.

Abstract: In an example, a cleaning station comprises a wiper blade to scrape cleaning fluid across a surface of a component of a print apparatus. A suction pump is to remove a cleaning fluid from a surface of the component of the print apparatus. A sensor is to determine the thickness of cleaning fluid on a surface of the component of the print apparatus. A controller is to vary a suction pressure of the suction pump based on measurements of the sensor.

Abstract: A printer including a body, a developer cartridge, and a developer level sensor. The body includes a printing unit to print an image on a print medium based on electrophotography. The developer cartridge is attachable to the body and includes a developer container including a developer, and a developer outlet provided at a length-direction side of the developer container to supply the developer from the developer container to the printing unit. The developer level sensor is installed on the body near the developer outlet to generate an electrical detection signal based on a developer level in the developer container.

Abstract: Provided is a process cartridge in which lateral running is suppressed while satisfactory potential fluctuation is maintained. The process cartridge includes: an electrophotographic photosensitive member including a support, a lowermost layer, and a photosensitive layer; and a charging member including a support and a conductive layer. In a case where a maximum frequency at which a phase of an impedance reaches 45°, when the impedance is measured by applying an AC voltage to the lowermost layer while changing the AC voltage, is represented by fOPC (Hz), and in a case where a maximum frequency at which a phase of an impedance reaches 45°, when the impedance is measured by applying an AC voltage to the charging member while changing the AC voltage, is represented by fC (Hz), the fOPC and the fC each have a value within a certain range.

Abstract: An image forming apparatus of an embodiment includes an image forming unit, a waste toner collection container, a paddle motor, a memory unit, and a control unit. The image forming unit forms a toner image on a sheet using a toner replenished from a toner cartridge containing the toner. The waste toner collection container contains a waste toner generated in the image forming unit. The paddle motor rotates a stirring paddle provided in the waste toner collection container. The memory unit stores a coefficient for each type of toner. The control unit acquires a count value, which is a value related to a replenishment amount, corrects the count value with the coefficient corresponding to the type of toner, updates a cumulative count value with the corrected count value, and drives the paddle motor according to the updated cumulative count value.

Abstract: An image forming unit forms an image on a sheet. A first generation circuit generates, regarding a member involved in image formation in the image forming unit, a first signal relating to a first abnormality. A second generation circuit generates, regarding the member, a second signal that relates to a second abnormality different from the first abnormality, and whose feature in a time axis direction or a frequency axis direction is different from that of the first signal. A control circuit has a single port to which the first signal and the second signal are to be input. The control circuit identifies between the first signal and the second signal based on a feature of a signal input to the port.

Abstract: A powder supply device includes: a storage unit that stores a mixed agent including a functional material-containing powder and magnetic powder, the storage unit being provided with a discharge port through which a part of the stored mixed agent is discharged; a supply unit that holds the mixed agent and supplies the functional material-containing powder from the storage unit; and a magnetic body that covers at least a part of the discharge port and forms a nap of the mixed agent to prevent the mixed agent that is dispersed in air from flowing out through the discharge port.

Abstract: An image forming apparatus includes: a photoconductor; a transfer portion; a photoconductor cleaner that removes residual toner from a surface of the photoconductor; and a first processor that forms a toner patch on the surface of the photoconductor. When the toner patch passes the transfer portion, the transfer portion makes the toner patch stay on the surface of the photoconductor such that toner of the toner patch is able to be supplied to the photoconductor cleaner. The first processor further determines an amount of toner for the toner patch with reference to a circumferential distance the photoconductor travels for a predetermined period of time.

Abstract: A cleaning device includes an accommodating container, a collector, and a remover. The accommodating container has an opening and a receiving port. The collector is in contact with a surface of a cleaned body while rotating, to remove matter on the surface of the cleaned body. The remover has a tip end that is in contact with the surface of the cleaned body to remove the matter. The accommodating container accommodates the collector and the remover. The collector and the remover are exposed to the cleaned body through the opening. The accommodating container receives, through the receiving port, the matter removed from the cleaned body. The accommodating container is supported in such a manner that the accommodating container can rotate to a position where the matter collected in the accommodating container do not leak through the opening, so as to be separated from the cleaned body.

Abstract: An image forming apparatus sets, on an image forming unit, one of a first transfer condition that does not cause an image to be formed on a sheet and a second transfer condition that causes an image to be formed on the sheet. The apparatus generates a first reading result by reading the sheet that has passed through the image forming unit set in the first transfer condition, and generates a second reading result by reading the sheet that has passed through the image forming unit set in the second transfer condition. The apparatus detects toner fogging based on the first reading result and a reading result out of the second reading result, the reading result concerning a non-image region in which no image is formed on a surface of the sheet.

Abstract: A device for removing toner attached to a transfer roller in an image forming apparatus is disclosed. The device includes a bar brush to contact an outer circumferential surface of the transfer roller, where the bar brush extends along a part of a longitudinal length of the transfer roller. The device includes an elongated cleaning member to contact the outer circumferential surface of the transfer roller, where the elongated cleaning member extends along the longitudinal length, entirely, of the transfer roller.

Abstract: An assembly for an electrophotographic image forming device according to one example includes a rotatable roll having an electrically conductive shaft. An electrically conductive bracket is positioned adjacent to the roll and in a spaced relationship from the roll along a length of the roll. An electrical contact is positioned to receive an electrical voltage from a power supply of the image forming device. The electrical contact is electrically connected to a first end portion of the shaft of the roll by way of a first electrical path and to a second end portion of the shaft of the roll by way of a second electrical path to transfer the electrical voltage to the roll. The bracket forms a portion of the second electrical path such that the electrical voltage transferring from the electrical contact to the second end portion of the shaft of the roll passes through the bracket.

Abstract: According to one embodiment, an image forming apparatus includes an image forming portion, and a control portion. The image forming portion includes an image carrier, a charging device, and a cleaning device. The charging device includes a charging roller which contacts a surface of the image carrier. The cleaning device includes a cleaning blade, and an adjustment portion. The cleaning blade slidably contacts the surface of the image carrier. The adjustment portion adjusts a linear pressure of the cleaning blade exerted on the surface of the image carrier. The control portion executes, when a rate of increase of an outer layer resistance value of the charging roller caused by a decrease in the function of the cleaning blade is greater than or equal to a first rate, linear pressure adjustment control of controlling the adjustment portion to increase the linear pressure of the cleaning blade.

Abstract: A sensor unit (12) includes a thermistor (21) and a connector (22). A protection unit (13) includes a thermal cutoff (31) and a connector (32). First and second intermediate connector units (14-1, 14-2) electrically connects the connectors (22, 32) and an external connection connector (11) to each other, respectively. An intermediate wire (53) electrically connects the first and second intermediate connector units (14-1, 14-2) to each other. The first intermediate connector unit (14-1) electrically connects an end of a loopback wire (23) of the connector (22) to the external connection connector (11), the second intermediate connector unit (14-2) connects an end of the thermal cutoff (31) to the external connection connector (11), the intermediate wire (53) electrically connects an other end of the loopback wire (23) and an other end of the thermal cutoff (31) to each other.

Abstract: A drum cleaner in a drum unit removes toner from a photosensitive drum. A waste-toner conveyance pipe has a waste-toner discharge port and conveys toner removed from the photosensitive drum by the drum cleaner. A toner accommodation chamber accommodates toner to be supplied to a developing roller. A waste-toner accommodation chamber accommodates toner removed from the photosensitive drum. A toner cartridge rotatably moves relative to the drum unit between: a first position at which a waste-toner receiving port is separated from the waste-toner discharge port in a state where the toner cartridge is mounted on the drum unit; and a second position at which an internal space of the waste-toner accommodation chamber is in communication with an internal space of the waste-toner conveyance pipe through the waste-toner discharge port and the waste-toner receiving port in a state where the toner cartridge is mounted on the drum unit.

Abstract: An image forming apparatus includes an apparatus main body, a first sheet feeding cassette, a conveyance unit and a lock member. The first sheet feeding cassette is inserted into the apparatus main body along a predetermined insertion direction and is drawn out of the apparatus main body along a drawing direction opposite to the insertion direction. In a state where the lock member is in a lock position, the first sheet feeding cassette does not interfere with the lock member to allow the first sheet feeding cassette to be inserted into the apparatus main body. In a state where the lock member is in a lock release position, the first sheet feeding cassette interferes with the lock member to inhibit the first sheet feeding cassette from being inserted into the apparatus main body.

Abstract: A container to store residual transfer toner remaining on an intermediate transfer belt is disposed in a region of a transfer unit, where the region is defined by an inner circumferential surface of the intermediate transfer belt. A single conveyance member, which rotates to convey toner conveyed from an inlet toward the container, is disposed in the inside of the container. An end portion of the conveyance member that is opposite to an end portion on a side of the inlet is located in a central region of the container.

Abstract: Example implementations relate to shafts with blades with tapered surfaces consistent with the disclosure. For example, a device including a shaft, a blade with a plurality of tapered surfaces, the surfaces tapered from a center of the shaft to an outer edge of the shaft, and a membrane attached to the plurality of tapered surfaces to facilitate print substance transport from the center of a print substance container towards the edges of the print substance container.