A method is described in which a difference in height is determined between a current position and a calibration position of a printhead of a printer. An alignment value for the printhead is then determined based on the difference.

A method of printing an image from a printhead module having a plurality of horizontal nozzle rows. Each nozzle row has a main row portion and a corresponding dropped row portion vertically offset from the main row portion. The method includes the steps of: determining a predetermined delay for the dropped row portions based on the offset, a print speed and a print resolution; allocating dot data for image lines to respective nozzle rows based on the print speed and print resolution, sending first dot data for each main row portion and second dot data for each dropped row portion to the printhead module; and firing nozzles from the main row portions and dropped row portion in a predetermined sequence. Each dropped row portion is fired independently of its corresponding main row portion and delayed relative to its corresponding main row portion by the predetermined delay.

A recording control device. A first portion control section forms a first portion as a portion that is continuous from a first region and is not continuous to a second region in a recording region in an output image that is formed on a medium in an overlapping region in a recording region, in such a manner that a use rate of a first nozzle row of an overlapping portion of a nozzle row is set to a first nozzle use rate. A second portion control section forms a second portion as a portion that is continuous with the first region and the second region in the output image in the overlapping region, in such a manner that the use rate of the first nozzle row of the overlapping portion is set to the second nozzle use rate.

A print chip includes: an elongate silicon substrate defining nominal leading and trailing longitudinal sides of the print chip; circuitry layers positioned on the silicon substrate; and a MEMS layer positioned on the circuitry layers. The MEMS layer includes a plurality of parallel nozzle rows, each nozzle row having a plurality of inkjet nozzle devices arranged in a main row portion and a dropped row portion offset from the main row portion. The circuitry layers include data latches configured to provide dot data for the inkjet nozzle devices. A first row of data latches is positioned adjacent a leading row of the main row portion, and a second row of data latches is positioned adjacent a trailing row of the dropped row portion.

In a method and system for increasing print quality, activation pulses are activated with which a nozzle of an inkjet printing device to print dots on a recording medium. The activation pulses may be adapted based on sensor data with respect to already printed dots. The method and system can further include an automatic adaptation of the activation pulses to increase print quality even given the presence of soiling at the nozzle.

The present disclosure provides a substrate treating apparatus having improved efficiency and productivity. The substrate treating apparatus provided includes a stage extending in a first direction, for moving a substrate in the first direction, and having an air floating system, a gantry arranged on the stage to extend in a second direction crossing the first direction, a head module installed on the gantry and movable in the second direction, and a displacement sensor installed in the head module, for measuring a separation distance between the substrate and stage, wherein at a first position, the head module ejects ink to the substrate and the displacement sensor measures a first separation distance between the substrate and the stage, and at a second position that is different from the first position, the head module ejects ink to the substrate and the displacement sensor measures a second separation distance between the substrate and the stage.

A printing apparatus includes: a plurality of heads configured to print mutually different colors; and a control unit configured to control the heads. The control unit operates the first head, configured to print a first color distinguishable from a surface color of an adjustment paper, to print a first correction pattern for performing alignment correction of the first head on the adjustment paper, and operates the second head, configured to print a second color distinguishable from the first color, to print a second correction pattern for performing alignment correction of the second head on the adjustment paper so as to at least partially overlap a first color area that is an area formed by the first head.

A method for setting a substrate processing apparatus having a head for dispensing ink includes aligning a position of at least one vision unit, by moving the vision unit above a reference mark and taking, by the vision unit, an image of the reference mark, in which the vision unit takes an image of a substrate, and the reference mark is made on the substrate processing apparatus and fixed in one position, and aligning at least one of a movement axis of the vision unit, a position of the substrate, or a movement axis of the substrate, by moving the vision unit or the substrate in a state in which the substrate having alignment marks made thereon is located under the vision unit and taking, by the vision unit, an image of the alignment marks.

A printing apparatus for printed electronics according to the present invention may include: ejection head units which each have at least one nozzle for ejecting ink droplets to perform drop-on-demand or continuous printing; a jetting observation unit which is provided at one side of the nozzle and configured to observe the ink droplet ejected from the nozzle; a lighting unit which is provided at the other side of the nozzle and configured to provide light to the jetting observation unit; an alignment observation unit which is configured to observe an aligned state between the nozzle and a substrate; and a fluid supply unit which is configured to supply the ink to the nozzle, in which the ejection head units include a single-nozzle head unit, and a multi-nozzle head unit provided separately from the single-nozzle head unit.

A shift amount detecting chart is formed on web paper, and the shift amount detecting chart is photographed by an image pickup unit. An image processor calculates shift amounts smaller than a maximum shift amount in absolute values as correction values based on a variation trace of density peak positions from image data corresponding to the shift amount detecting chart photographed by the image pickup unit. A controller corrects printing timing with these correction values. Consequently, even when temporal variations occur to the shift amounts within a predetermined length, since the correction values are calculated based on the shift amounts smaller than the maximum shift amount in absolute values, an excessive correction can be prevented, thereby to improve printing quality.