Abstract: A plurality of support rollers support a conveyor belt. A first transmission mechanism transmits a rotational force of a first motor to one of the plurality of support rollers. A second transmission mechanism transmits a rotational force of a second motor to one of the plurality of support rollers. A first control portion controls a first supply power supplied to the first motor in accordance with a difference between a speed detection value and a target speed. A second control portion controls a second supply power supplied to the second motor in accordance with one or both of conveyance information on a conveyance state of an object in a specific area and suction force information on a suction force of a suction fan. The second transmission mechanism transmits the rotational force at a greater reduction ratio than the first transmission mechanism.

Abstract: A plurality of support rollers rotatably support a belt member. A first motor and a second motor each rotate one of the plurality of support rollers. In a normal mode, a normal control portion derives a load index value based on information on a load torque of the plurality of support rollers, and controls a second supply power supplied to the second motor based on power control data representing a correspondence between the load index value and a motor supply power. In a calibration mode, a calibration control portion corrects the power control data by comparing a speed detection value when a test drive control is being executed or a test actual value which is a power supplied to the second motor with a reference value.

Abstract: A plurality of support rollers rotatably support a belt member. A first motor and a second motor each rotate one of the plurality of support rollers. A first control portion acquires a speed detection value, which is a detection value of a rotational speed of one of the plurality of support rollers, and controls a first supply power supplied to the first motor in accordance with a difference between the speed detection value and a target speed. A second control portion controls a second supply power supplied to the second motor in accordance with one or both of conveyance information on a conveyance state of an object in a specific area and suction force information on a suction force of a suction fan.

Abstract: An electronic apparatus includes a drive unit having a drive roller, a driving motor, and a limited-life component, a sound collecting device that collects sound from the limited-life component, and outputs sound data, a storage device storing in advance a sound pressure level corresponding to a specific frequency of the limited-life component, with respect to each of different lengths of the remaining service life, and a controller that analyzes frequency of the sound data at predetermined time points; acquires the sound pressure level corresponding to the specific frequency of the limited-life component, on a basis of a result of the frequency analysis; compares the acquired sound pressure level with the sound pressure level of each of the lengths of the remaining service life; predicts the remaining service life of the limited-life component, on a basis of comparison result; and displays the predicted remaining service life on a display device.

Abstract: An image forming apparatus includes a recording head, a cap, a tank, a pump, a third communication pipe and a controller. The cap forms a sealed space including an ejection port of the recording head. The tank is connected to the sealed space through a first communication pipe and generates a humidified air. The pump feeds the humidified air to the sealed space through the first communication pipe. The third communication pipe connects the pump and the sealed space. The controller is performable a capping operation to feed the humidified air to the sealed space and a long-period leaving operation to feed the humidifying liquid in the tank to the sealed space through the third communication pipe and to stop a driving of the pump after a predetermined amount of the humidifying liquid is fed in the sealed space.

Abstract: An image forming apparatus includes an image forming device, a transport belt, an optical sensor, an ultrasonic sensor, and a controller. The transport belt transports the recording sheet. The optical sensor emits light to the transport belt, and receives the light reflected by the transport belt. The ultrasonic sensor transmits ultrasonic wave to the transport belt, and receives the ultrasonic wave transmitted through the transport belt. The controller decides whether an output from each of the optical sensor and the ultrasonic sensor represents a normal value or an abnormal value, and executes predetermined control, depending on a combination of decision results about the respective outputs from the optical sensor and the ultrasonic sensor.

Abstract: An electronic apparatus includes a drive unit having a drive roller, a driving motor, and a limited-life component, a sound collecting device that collects sound from the limited-life component, and outputs sound data, a storage device storing in advance a sound pressure level corresponding to a specific frequency of the limited-life component, with respect to each of different lengths of the remaining service life, and a controller that analyzes frequency of the sound data at predetermined time points; acquires the sound pressure level corresponding to the specific frequency of the limited-life component, on a basis of a result of the frequency analysis; compares the acquired sound pressure level with the sound pressure level of each of the lengths of the remaining service life; predicts the remaining service life of the limited-life component, on a basis of comparison result; and displays the predicted remaining service life on a display device.

Abstract: An electronic apparatus includes a drive roller, a contamination detection device that detects a degree of uncontaminatedness of a surface of the drive roller, a drive motor, a controller, and a display device. The controller executes a first feedback control, when the degree of uncontaminatedness is equal to or higher than a first threshold, executes a second feedback control including increasing the driving force to the drive motor, and displays a first screen announcing necessity to prepare for restoration of the drive roller on the display device, when the degree of uncontaminatedness is lower than the first threshold, and equal to or higher than a second threshold lower than the first threshold, and restricts the drive roller from rotating, and displays a second screen requesting restoration of the drive roller on the display device, when the degree of uncontaminatedness is lower than the second threshold.

Abstract: A maintenance device includes a wiper, a wiper carriage, a supporting frame, a wiper moving mechanism, and a unit ascending/descending mechanism. The wiper moving mechanism includes a rack supported to the wiper carriage so as to be movable in an up-down direction, a wiper driving motor provided in the supporting frame, a rack driving gear that transmits a driving force of the wiper driving motor to the rack, a sliding member that is rotatably supported to the wiper carriage and comes into contact with the supporting frame, and a gear pitch retention member that maintains constant a positional relationship in the up-down direction between the rack and the rack driving gear during reciprocation of the wiper carriage.

Abstract: An image forming apparatus includes a recording head, a wiping unit and a moving mechanism. The recording head has a nozzle area where a plurality of ink ejection ports is opened downward. The wiping unit is moved in a first direction with coming into contact with the nozzle area and wipes the ink ejection ports. The moving mechanism performs a wiping operation and a returning operation. The moving mechanism includes a first drive source and a guide part. The first drive source moves the wiping unit in the first direction and in the second direction. The guide part guides the wiping unit in the first direction in the wiping operation, and guides the wiping unit in the first direction so as to separate the wiping unit from the nozzle area downward and then guides the wiping unit in the second direction in the returning operation.

Abstract: An image forming apparatus includes a recording head, a cap, a tank, a pump, a third communication pipe and a controller. The cap forms a sealed space including an ejection port of the recording head. The tank is connected to the sealed space through a first communication pipe and generates a humidified air. The pump feeds the humidified air to the sealed space through the first communication pipe. The third communication pipe connects the pump and the sealed space. The controller is performable a capping operation to feed the humidified air to the sealed space and a long-period leaving operation to feed the humidifying liquid in the tank to the sealed space through the third communication pipe and to stop a driving of the pump after a predetermined amount of the humidifying liquid is fed in the sealed space.

Abstract: A maintenance device includes a wiper, a wiper carriage, a supporting frame, a wiper moving mechanism, and a unit ascending/descending mechanism. The wiper moving mechanism includes a rack supported to the wiper carriage so as to be movable in an up-down direction, a wiper driving motor provided in the supporting frame, a rack driving gear that transmits a driving force of the wiper driving motor to the rack, a sliding member that is rotatably supported to the wiper carriage and comes into contact with the supporting frame, and a gear pitch retention member that maintains constant a positional relationship in the up-down direction between the rack and the rack driving gear during reciprocation of the wiper carriage.

Abstract: A waste ink conveying device includes a waste ink tank installed in a tank installed part, and a tank cover opening/closing the tank installed part. The tank cover includes a nozzle, a nozzle operation part and a cover locking part. The nozzle flowing a waste ink is inserted in an inflow port in the waste ink tank. The nozzle operation part switches projecting and retracting of the nozzle to insert and retract the nozzle to the inflow port. The cover locking part switches locking and unlocking of closing of the tank cover. If the cover locking part is in a locking state and the nozzle is in a retracting state, the cover locking part can be switched to an unlocking state. If the cover locking part is in the locking state and the nozzle is in a projecting state, the cover locking part cannot be switched to the unlocking state.

Abstract: A wipe unit, including one or more wipers, a wiper carriage, a collection tray, and an ink receiving member, cleans a recording head having an ink ejection surface in which an ink ejection port for ejecting ink onto a recording medium is opened. The one or more wipers wipe off ink on the ink ejection surface. The wiper carriage is moved along a wiping direction while holding the wiper. The collection tray, having a tray surface and placed below the wiper, collects ink wiped off by the wiper. The ink receiving member, which is recessed-shaped and provided in the wiper carriage, receives ink dropping from a wiper that is placed furthest downstream in the wiping direction among the one or more wipers, and moreover the ink receiving member lets the ink drop onto the tray surface.

Abstract: A cap includes a cap body and a check valve. The cap body is attached to a spout of an ink container supplying an ink to one direction. The check valve has a check valve ball inside and prevents backward flow of the ink to the other direction. The cap body includes a first thread portion, a supplying port and a second thread portion. The first thread portion is screwed with an outer circumference face of the spout to seal the spout. The supplying port is provided inside the first thread portion and has an inner diameter smaller than the spout. The second thread portion is provided around the supplying port inside the spout. The check valve is screwed with the second thread portion.

Abstract: A wipe unit, including one or more wipers, a wiper carriage, a collection tray, and an ink receiving member, cleans a recording head having an ink ejection surface in which an ink ejection port for ejecting ink onto a recording medium is opened. The one or more wipers wipe off ink on the ink ejection surface. The wiper carriage is moved along a wiping direction while holding the wiper. The collection tray, having a tray surface and placed below the wiper, collects ink wiped off by the wiper. The ink receiving member, which is recessed-shaped and provided in the wiper carriage, receives ink dropping from a wiper that is placed furthest downstream in the wiping direction among the one or more wipers, and moreover the ink receiving member lets the ink drop onto the tray surface.

Abstract: An image forming apparatus includes at least one conveyance roller pair, an image forming unit, at least one brushless motor, a motor drive control unit, a delay amount detector, and an image formation control unit. The image formation control unit controls the motor drive control unit to convey the sheets at a predetermined timing toward the image forming unit. The image formation control unit, during a continuous image formation in which a plurality of sheets are continuously conveyed by the conveyance roller pair with a predetermined sheet spacing and images are sequentially formed on the respective sheets, controls the motor drive control unit to sequentially perform an on and off control of the brushless motor corresponding to the respective sheets, and adjusts the sheet spacing and a rise time in the on control of the brushless motor corresponding to the rotation delay amount detected by the delay amount detector.

Abstract: A cap includes a cap body and a check valve. The cap body is attached to a spout of an ink container supplying an ink to one direction. The check valve has a check valve ball inside and prevents backward flow of the ink to the other direction. The cap body includes a first thread portion, a supplying port and a second thread portion. The first thread portion is screwed with an outer circumference face of the spout to seal the spout. The supplying port is provided inside the first thread portion and has an inner diameter smaller than the spout. The second thread portion is provided around the supplying port inside the spout. The check valve is screwed with the second thread portion.

Abstract: A waste ink conveying device includes a waste ink tank installed in a tank installed part, and a tank cover opening/closing the tank installed part. The tank cover includes a nozzle, a nozzle operation part and a cover locking part. The nozzle flowing a waste ink is inserted in an inflow port in the waste ink tank. The nozzle operation part switches projecting and retracting of the nozzle to insert and retract the nozzle to the inflow port. The cover locking part switches locking and unlocking of closing of the tank cover. If the cover locking part is in a locking state and the nozzle is in a retracting state, the cover locking part can be switched to an unlocking state. If the cover locking part is in the locking state and the nozzle is in a projecting state, the cover locking part cannot be switched to the unlocking state.

Abstract: A waste ink storage mechanism of the present disclosure includes a waste ink tank, a waste ink tank fitting portion and a capacitance sensor. The waste ink tank stores a waste ink exhausted from a recording head. The waste ink tank is fitted to the waste ink tank fitting portion such that the waste ink tank can be fitted into and removed from the waste ink tank fitting portion. The capacitance sensor is provided in the waste ink tank fitting portion so as to detect that a liquid surface within the waste ink tank reaches a predetermined level. The waste ink tank includes: a first surface in which an inflow port through which the waste ink flows in is formed; and a second surface, and the capacitance sensor is arranged close to the second surface.