A recording device including a feeding unit configured to feed out a target recording medium while supporting the target recording medium in a roll form, a head that ejects ink to a surface of the target recording medium fed from the feeding unit thereby forming an image on the surface, a corona irradiation unit that is arranged between the feeding unit and the head in a transport path of the target recording medium and modifies the surface by performing corona irradiation, and a transport path length changing unit that is arranged between the corona irradiation unit and the head and changes a length of the transport path.

An image forming apparatus includes a sheet storage section, an image forming device, a transport route, a transport device, and a switching device. The switching device is turned on or off depending on a pressing force applied by an end portion of a sheet being transported along the transport route, at a position on the transport route upstream of the image forming device in a sheet transport direction. The switching device is turned on or off depending on whether the pressing force is equal to or larger than a predetermined pressing force to be applied by the sheet having predetermined rigidity, or smaller than the predetermined pressing force.

An image forming apparatus includes a sheet storage section, an image forming device, a transport route, a transport device, and a switching device. The switching device is turned on or off depending on a pressing force applied by an end portion of a sheet being transported along the transport route, at a position on the transport route upstream of the image forming device in a sheet transport direction. The switching device is turned on or off depending on whether the pressing force is equal to or larger than a predetermined pressing force to be applied by the sheet having predetermined rigidity, or smaller than the predetermined pressing force.

An image forming apparatus includes a transportation belt, a print engine, and an ejection timing control unit. The transportation belt transports a print sheet. The print engine ejects ink onto the print sheet. The ejection timing control unit adjusts an ink ejection timing of the print engine. The transportation belt includes a flushing opening part. The print engine repeatedly performs ink flushing to the flushing opening part at predetermined timings. Further the ejection timing control unit derives an adjustment amount for the ink ejection timing of the print engine on the basis of: a number of the ink ejection timings in a period from a previous flushing time to a current flushing time, a distance from the flushing opening part for the flushing at the previous flushing time to the flushing opening part for the flushing at the current flushing time, and a print resolution.

An image forming apparatus includes a transportation belt, a print engine, and an ejection timing control unit. The transportation belt transports a print sheet. The print engine ejects ink onto the print sheet. The ejection timing control unit adjusts an ink ejection timing of the print engine. The transportation belt includes a flushing opening part. The print engine repeatedly performs ink flushing to the flushing opening part at predetermined timings. Further the ejection timing control unit derives an adjustment amount for the ink ejection timing of the print engine on the basis of: a number of the ink ejection timings in a period from a previous flushing time to a current flushing time, a distance from the flushing opening part for the flushing at the previous flushing time to the flushing opening part for the flushing at the current flushing time, and a print resolution.

A liquid discharge apparatus includes a conveyor, a discharger, a first mover, an output device, a second mover, and circuitry. The conveyor conveys an elongated web in a conveyance direction in a state in which tension is applied to the web. The discharger discharges liquid to the web conveyed by the conveyor. The first mover moves the discharger in a width direction intersecting the conveyance direction. The output device outputs position information of the web in the width direction. The second mover moves the output device in the width direction. The circuitry controls movement of the discharger based on the position information of the web. The circuitry controls movement of the output device based on information of a length of the web in the width direction and expansion-and-contraction range information of the web in the width direction to change a position of the output device in the width direction.

A liquid discharge apparatus includes a conveyor, a discharger, a first mover, an output device, a second mover, and circuitry. The conveyor conveys an elongated web in a conveyance direction in a state in which tension is applied to the web. The discharger discharges liquid to the web conveyed by the conveyor. The first mover moves the discharger in a width direction intersecting the conveyance direction. The output device outputs position information of the web in the width direction. The second mover moves the output device in the width direction. The circuitry controls movement of the discharger based on the position information of the web. The circuitry controls movement of the output device based on information of a length of the web in the width direction and expansion-and-contraction range information of the web in the width direction to change a position of the output device in the width direction.

A printing apparatus includes a conveyance unit including a pair of rotation members that nip a roll sheet, and configured to convey the sheet by rotation of the pair of rotation members, a printing unit, and a control unit configured to, upon executing a new print job, cause the conveyance unit to perform a preparatory operation in which the sheet is conveyed in a forward direction and then conveyed in a reverse direction and stopped. If a predetermined condition is met after completion of a previous print job, the control unit causes the conveyance unit to perform the preparatory operation, and if the predetermined condition is not met after completion of a previous print job, the control unit does not cause the conveyance unit to perform the preparatory operation.

An image forming apparatus includes a print engine to form an image on recording medium, a sensor including first and second electrodes disposed to oppose each other based on a recording medium transport path, along which the recording medium is transported, and to detect a capacitance between the first and second electrodes, and a processor to determine a state of the recording medium fed along the recording medium transport path by using the capacitance detected by the sensor and to control the print engine based on the state of the recording medium.

An image forming apparatus includes a print engine to form an image on recording medium, a sensor including first and second electrodes disposed to oppose each other based on a recording medium transport path, along which the recording medium is transported, and to detect a capacitance between the first and second electrodes, and a processor to determine a state of the recording medium fed along the recording medium transport path by using the capacitance detected by the sensor and to control the print engine based on the state of the recording medium.