A heater includes an irradiator configured to irradiate a heating object including a liquid attachment region, onto which a liquid is applied, with an active energy ray, and circuitry configured to control an output of the active energy ray emitted from the irradiator to an edge portion in the liquid attachment region of the heating object to be larger than an output of the active energy ray emitted from the irradiator to a non-edge portion in the liquid attachment region excluding the edge portion.

A drying device includes a heater, a supporter, a controller, and a temperature detector. The heater heats a medium. The supporter is disposed opposite the heater to support the medium. The controller turns on the heater while the medium is conveyed, and turns off the heater when the medium is stopped. The temperature detector detects a temperature of the supporter. The controller is connected to the temperature detector to turn off the heater when the temperature detected with the temperature detector is a predetermined temperature or higher.

A thermal treatment unit for a printer is mountable on a carriage that moves across a printing medium. The thermal treatment unit comprises an emitter element to emit radiation towards the printing medium to thermally treat the printing medium, wherein the thermal treatment unit varies a radiation power output of the emitter element in terms of a spatial position of the carriage along a width direction of the printing medium.

The ratios (Wp1/Wm1, Wp2/Wm2) of the pattern widths Wp1, Wp2 to the paper widths Wm1, Wm2 are obtained, respectively, after the first drying and after the second drying (Step S109). Then, in accordance with these ratios, a range (in other words, the width) in which the back print image G2 is to be printed is adjusted in the width direction Aw (Step S204). As a result, when the double-sided printing is performed on the continuous form paper M by performing drying every time when the image is printed on each of the surfaces Ma, Mb of the continuous form paper M, it is possible to suppress the difference in the ratios of the widths of the images G1, G2 to the width of the continuous form paper M between the surfaces Ma and Mb of the continuous form paper M.

In an image forming apparatus, a sub-scanning carriage moves a recording medium in a conveyance direction. A first carriage and a second carriage move in a main scanning direction and discharge a liquid and another liquid onto the recording medium to print a first image and a second image on the recording medium, respectively. Circuitry executes a first print sequence and a second print sequence. Further, the circuitry calculates a drying time of the liquid to form the first image by the first carriage, determines whether to execute the second print sequence based on the drying time, causes the first carriage and the second carriage to execute the second print sequence when the circuitry determines to execute the second print sequence, and causes the first carriage and the second carriage to execute the first print sequence when the circuitry determines not to execute the second print sequence.

A DOD print station has at least one DOD print head that applies radiation curable material, to a surface of an identification document. A curing station is adjacent to the DOD print station. The curing station includes at least one radiation emitting device, for example a UV light emitting device, that cures the radiation curable material applied to the surface. The curing station is configured to prevent stray radiation emitted from the radiation emitting device from impinging on the DOD print head(s) and prevent exposure to the operator of the DOD print station.

A printer includes a platen, a first head, a second head, and an illumination device. In a normal print mode, the first head, the second head, and the illumination device are moved relatively with respect to the platen in a main scanning direction, in a state in which a distance between the platen and a predetermined position of the illumination device in the height direction is a first distance, and the ink is ejected onto an object to be printed placed on the platen and the light is irradiated onto the ejected ink. In a gloss print mode, the first head, the second head, and the illumination device are moved relatively with respect to the platen in the main scanning direction, in a state in which the distance between the platen and the predetermined position in the height direction is a second distance larger than the first distance.

A printer includes a platen, a first head, a second head, a first lamp, and a second lamp. The first head, the second head, the first lamp, and the second lamp are moved relatively with respect to the platen in a main scanning direction, and the platen is moved from the second head toward the first head relatively with respect to the first head, the second head, the first lamp, and the second lamp, repeatedly. The second head ejects the second ink onto the object to be printed placed on the platen while the first head, the second head, the first lamp, and the second lamp are moving in the main scanning direction. The first lamp irradiates light onto the second ink on the object to be printed while the first head, the second head, the first lamp, and the second lamp are moving in the main scanning direction.

The present disclosure relates to the technical field of printing, and provides a digital printing press. The digital printing press includes a frame, and an unwinder, a driver, an inkjet printer, a curer and a winder that are arranged on the frame, where the driver drives a substrate to move from the unwinder to the winder along a substrate path, the inkjet printer and the curer are arranged above a printing segment of the substrate path, the printing segment of the substrate path is in the shape of an arch, and the arch bends toward the inkjet printer and the curer. The UV light from the curer can be reflected by the substrate to a position other than the inkjet printer as a result of the arched printing segment. UV light is prevented from entering the inkjet printer's nozzle, extending the inkjet printer's service life.

A three-dimensional object printing method includes first operation of concurrently performing ejection of liquid toward a workpiece by a head, emission of energy toward the workpiece by an energy emitter, and movement of the head and the energy emitter with respect to the workpiece by a moving mechanism, and second operation of concurrently performing emission of energy toward the workpiece by the energy emitter and movement of the head and the energy emitter with respect to the workpiece by the moving mechanism, without performing ejection of liquid by the head. A first irradiation distance, which is a distance between the workpiece and an emission face during execution of the first operation, and a second irradiation distance, which is a distance between the workpiece and the emission face during execution of the second operation, are different from each other.