Provided are a head device, an ink jet printing device, and a driving voltage adjustment method capable of adjusting a driving voltage corresponding to a target jetting amount and suppressing unevenness of printing density occurring between head modules. A dead device includes an ink jet head including a plurality of head modules, and a driving voltage supply device that includes a processor and supplies a driving voltage to the ink jet head, in which the processor acquires a module characteristic, acquires an ink characteristic of ink applied to printing, derives a first voltage coefficient for adjusting a driving voltage corresponding to a target jetting amount for each head module based on the module characteristic and the ink characteristic, and adjusts the driving voltage by applying the first voltage coefficient for each head module.

A printing apparatus configured to perform printing while varying an amount of adjustment of a target of adjustment, executing: printing a first adjustment pattern on a printing medium; reading the printed first adjustment pattern to acquire a first adjustment amount; printing a part of a second adjustment pattern on the printing medium, the printed part of the second adjustment pattern corresponding to only a part of the amount of adjustment according to the first adjustment pattern; reading the printed part of the second adjustment pattern to acquire a second adjustment amount; setting a first parameter that is a result of adjusting the target of adjustment by using the first adjustment amount; and setting a second parameter that is a result of adjusting the target of adjustment by using the second adjustment amount.

A recording device including: a liquid ejecting unit configured to eject liquid to a first surface of a medium transported in a transport direction, a roller disposed downstream of the liquid ejecting unit in the transport direction and configured to rotate in contact with the first surface, and a control unit, wherein the control unit is configured to form a first pattern of the liquid on the first surface by controlling ejection of the liquid by the liquid ejecting unit, and to form a detection region for the first pattern at a specific position on the first surface at which the roller is brought into contact with the first surface when a rotational angle of the roller becomes m°+360°, m° being a rotational angle of the roller when the roller is brought into contact with the first pattern.

In an image processing apparatus according to the present disclosure, a printing system includes a movement detection unit that detects scanning, which is movement in a first direction, and an operation of making a line break, which is movement in a second direction crossing the first direction, of a printing apparatus main body that includes a printing unit that performs printing on a printing medium. The printing system further includes a notification unit that selectively makes first notification that prompts scanning along with printing by the printing unit, second notification that prompts scanning along with no printing by the printing unit, and third notification that prompts the operation of making a line break, in accordance with a detection result of the printing unit.

A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device holds a print medium against the movable support surface by vacuum suction and transports the print medium through the deposition region. The air flow control system comprises an air supply unit comprising an airflow guide structure extending into the opening of the carrier plate, the airflow guide structure configured to flow air at a direction aimed under the printhead and at an oblique angle relative to the movable support surface. The air flow control system controls the air supply unit to selectively flow the air based on a location of a print medium relative to the printhead.

A method of operating a printer distributes inkjet operations from frequently used inkjets to lesser used inkjets. The redistribution of the inkjet operations helps reduce the number of inkjets exhibiting cross-process direction error so printhead maintenance operations, such as purging, occur less frequently.

A method for correcting an image includes: moving first and second ink jet heads and a medium relative to each other, each of the first and second ink jet heads including nozzles and drive elements corresponding to the nozzles respectively; discharging ink droplets from the nozzles of the first and second ink jet heads, by connecting each of the drive elements to one of power supply circuits and by applying voltage to each of the drive elements, the power supply circuits having different output voltage values each other; determining a density difference between a first image region and a second image region; and switching the voltage to be applied to first drive elements to a first voltage by switching the power supply circuits to be connected to the first drive elements based on the density difference.

An MFD is disclosed. For example, the MFD includes a printhead to dispense print material, an enhancement printhead to dispense an enhancement printing fluid, a processor and a non-transitory computer-readable medium storing a plurality of instructions. The instructions when executed by the processor cause the processor to perform operations that include determining that an automated enhancement feature was selected, analyzing each pixel of an image to be printed to determine one or more pixels that are to receive the enhancement printing fluid, controlling the printhead to print the image, and controlling the enhancement printhead to dispense the enhancement printing fluid on the one or more pixels that are to receive the enhancement printing fluid.

In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes a number of zones. Each zone includes a number of sets of fluidic devices. Each fluidic device includes a fluid chamber and a fluid actuator disposed in the chamber. Each fluidic device also includes a sensor to sense a characteristic of the zone and an adjustment device. The adjustment device 1) delays a firing signal received from a previous zone as it passes by each set of fluidic devices and 2) adjusts the firing signal as it enters the zone based on a sensed characteristic.

A printer and a method for printing of pages on a continuous media, such as labels, with any desired or practical spacing using fixed head printheads that have spacing limitations for printing pages on the continuous media. The printer can be configured to detect a top of form mark on the continuous media as it is moved through a media path in the printer and initiating printing of an image on an adjacent page or label at the position indicated by the top of form mark.