Abstract: An image forming apparatus may include a conveyor unit configured to convey a recording medium along a conveying path, first and second sensors disposed in the conveying path and configured to detect the recording medium, a memory, and a controller configured to determine whether a length of the recording medium is less than or equal to a conveying distance between the first sensor and the second sensor. The controller may also be configured to perform storing processes for storing detection results of the first sensor and the second sensor in the memory when the controller determines that the length of the recording medium is less than or equal to the conveying distance.

Abstract: A recording apparatus includes: a transporting mechanism configured to transport a recording medium along a first transporting path; a recording head configured to record an image on the recording medium transported by the transporting mechanism; a reading unit configured to read the recording medium and arranged upstream of the recording head along the first transporting path; a re-transporting mechanism configured to perform re-transportation of the recording medium to the transporting mechanism in a state that front and back surfaces of the recording medium are inverted, by re-transporting the recording medium to return to an upstream portion of the first transporting path, via a second transporting path; a sensor arranged upstream of the recording head along the first transporting path and configured to detect the recording medium transported by the transporting mechanism; and a controller configured to control the recording head, the reading unit, the transporting mechanism and the re-transporting mechan

Abstract: A liquid ejection apparatus comprises a plurality of piezoelectric element units, which can be driven to eject liquid by changing a drive voltage, and a control device. The control device may calculate an accumulated time for each of the piezoelectric element units. The accumulated times may be a time that a respective piezoelectric element unit is in a driven state. The control device may also identify a first piezoelectric element unit having a maximum accumulated time and a second piezoelectric element unit having a minimum accumulated time from among the piezoelectric element units. The control device may reduce the drive voltage applied to one or more of the piezoelectric element units that are not in the driven state to a lower voltage, when the control device determines that the difference between the maximum accumulated time and the minimum accumulated time is less than a predetermined time.

Abstract: A liquid ejection apparatus includes a liquid ejection head, actuator units with actuators, a power supply that output a main voltage, and linear regulators that reduce the main voltage to drive voltages to be supplied to the relevant actuator units. When a voltage difference between the main voltage and drive voltage is greater than an allowable value for any of the actuator units, the apparatus controls a linear regulator so that the drive voltage supplied to at least one actuator unit is adjusted to a high drive voltage. A small ejection driving waveform is created as the driving waveform to be output to the actuators in the actuator unit to which the high drive voltage is supplied.

Abstract: A liquid discharger is provided that includes a sheet detector, a second discharging head discharging second liquid, a rotary roller, and a first discharging head discharging first liquid disposed in the above order from an upstream side in a feeding direction. The liquid discharger further includes an arrival time storing unit storing a standard arrival time for the predetermined position of a sheet to reach the first discharging head from the sheet detector when there is no second liquid attaching onto the rotary roller, a delay time storing unit storing a relationship between a attachment amount and a delay time, a delay time determining unit determining a delay time corresponding to a determined attachment amount based on the relationship, and a controller determining a moment when the first discharging head is to discharge the first liquid based on the stored standard arrival time and the determined delay time.

Abstract: A liquid ejection apparatus includes a liquid ejection head, actuator units with actuators, a power supply that output a main voltage, and linear regulators that reduce the main voltage to drive voltages to be supplied to the relevant actuator units. When a voltage difference between the main voltage and drive voltage is greater than an allowable value for any of the actuator units, the apparatus controls a linear regulator so that the drive voltage supplied to at least one actuator unit is adjusted to a high drive voltage. A small ejection driving waveform is created as the driving waveform to be output to the actuators in the actuator unit to which the high drive voltage is supplied.

Abstract: A liquid ejection apparatus comprises a plurality of piezoelectric element units, which can be driven to eject liquid by changing a drive voltage, and a control device. The control device may calculate an accumulated time for each of the piezoelectric element units. The accumulated times may be a time that a respective piezoelectric element unit is in a driven state. The control device may also identify a first piezoelectric element unit having a maximum accumulated time and a second piezoelectric element unit having a minimum accumulated time from among the piezoelectric element units. The control device may reduce the drive voltage applied to one or more of the piezoelectric element units that are not in the driven state to a lower voltage, when the control device determines that the difference between the maximum accumulated time and the minimum accumulated time is less than a predetermined time.

Abstract: An image forming apparatus may include a conveyor unit configured to convey a recording medium along a conveying path, first and second sensors disposed in the conveying path and configured to detect the recording medium, a memory, and a controller configured to determine whether a length of the recording medium is less than or equal to a conveying distance between the first sensor and the second sensor. The controller may also be configured to perform storing processes for storing detection results of the first sensor and the second sensor in the memory when the controller determines that the length of the recording medium is less than or equal to the conveying distance.

Abstract: A liquid discharger is provided that includes a sheet detector, a second discharging head discharging second liquid, a rotary roller, and a first discharging head discharging first liquid disposed in the above order from an upstream side in a feeding direction. The liquid discharger further includes an arrival time storing unit storing a standard arrival time for the predetermined position of a sheet to reach the first discharging head from the sheet detector when there is no second liquid attaching onto the rotary roller, a delay time storing unit storing a relationship between a attachment amount and a delay time, a delay time determining unit determining a delay time corresponding to a determined attachment amount based on the relationship, and a controller determining a moment when the first discharging head is to discharge the first liquid based on the stored standard arrival time and the determined delay time.