A printing control apparatus configured to control a printing apparatus including an acquisition unit configured to acquire discharge characteristic information including a characteristic of discharging ink for each of nozzles, a correction amount calculation unit configured to calculate a correction amount for correcting an amount of the ink discharged onto a printing medium based on the discharge characteristic information for each of printing modes having mutually different relative movement amounts of the sub scanning movements, and a printing data generation unit configured to generate printing data for executing printing in accordance with the printing mode based on the correction amount.

The invention relates to a machine and method for single-pass digital printing on glass (1).

The machine comprises: a support structure (2) for securing the sheet of glass (1); and a printing bridge (3) which, during printing, can move along the longitudinal X axis of the support structure (2), said bridge supporting digital printing means (33) with print bars (100, 100, 100) comprising successive printing heads (10, 10, 10), as well as supporting a scanner (32) for capturing data relating to the positions of defects (X, Y).

An ink jet recording apparatus of a line-recording-head type includes one or more recording heads using the same ink and performs recording of an image by conveying a recording medium using multiple passes through a recording region of the recording head while the recording medium is repeatedly conveyed backward and forward to speed up recording and improve image quality. A recording head is controlled to provide that an amount of ink applied to a recording medium in a case where the recording medium is conveyed at a first speed is smaller than an amount of ink applied to the recording medium in a case where the recording medium is conveyed at a second speed higher than the first speed in both of a case where the recording medium is accelerated and a case where the recording medium is decelerated.

A liquid discharge apparatus includes a recording head configured to discharge a liquid to form a pattern on a recording medium and a reading device configured to read the pattern. The apparatus further includes circuitry configured to form at least two first markers while moving the recording head relative to the recording medium in a head movement direction; form a second marker at one of positions of the at least two first markers, to form a pattern including a reference marker formed with one of the at least two first markers and a measurement marker in which the second marker is overlaid on another of the at least two first markers; and measure a distance between the reference marker and the measurement marker in the head movement direction based on information obtained by the reading device.

A printing device prints an object on a medium by inkjet printing. The printing device includes: a solid print nozzle discharging solid-color printing ink; a color printing nozzle discharging color printing ink; and a main scan driver prompting the nozzles to perform main scans in which the nozzles discharge the ink droplets while moving in a main scanning direction previously set, wherein with a density of ink dots formed on the medium by one nozzle in a preset number of the main scans being defined as a main scan dot density, the main scan driver prompting the solid print nozzle to form ink dots at a first main scan dot density, the main scan driver further prompting the color printing nozzle to form ink dots at a second main scan dot density lower than the first main scan dot density.

A printing apparatus performing printing by an inkjet scheme includes: an inkjet head; and a controller, configured to control the operation of a main scan driver and a sub scan driver to perform a main scanning operation multiple times on each position on a medium. In the main scanning operation, for at least part of ejection positions serving as ejection targets of ink droplets in the main scanning operation, the controller causes the inkjet head to eject an ink droplet in accordance with a mask for selecting part of the at least part of ejection positions.

A method for modifying color density values in a dot-based printing system uses a control unit. The control unit implements the modification of the color density values after a raster image has been created and modifies the number and/or size of print dots to be applied to a printing substrate in order to attain pre-defined color density target values.

An image processing apparatus generates dot data for printing an image on a printing medium by using dots of different sizes formed by a plurality of nozzles ejecting ink. The image processing apparatus includes a first acquisition unit that acquires dot data specifying printing or non-printing of each of the dots of a plurality of sizes for each pixel, a specification unit that specifies a dot having a strong possibility of being pulled by a dot having landed earlier on the printing medium of dots in the dot data, and a correction unit that corrects a dot specified by the specification unit in the dot data. The image processing apparatus can output an image whose banding is unlikely to be recognized by suppressing image defect due to a change of dots accompanying liquid droplet interference.

An ink jet process is used to deposit a material layer to a desired thickness. Layout data is converted to per-cell grayscale values, each representing ink volume to be locally delivered. The grayscale values are used to generate a halftone pattern to deliver variable ink volume (and thickness) to the substrate. The halftoning provides for a relatively continuous layer (e.g., without unintended gaps or holes) while providing for variable volume and, thus, contributes to variable ink/material buildup to achieve desired thickness. The ink is jetted as liquid or aerosol that suspends material used to form the material layer, for example, an organic material used to form an encapsulation layer for a flat panel device. The deposited layer is then cured or otherwise finished to complete the process.

In an imaging method an image or multiple images, an ink specification and substrate or substrates for imaging are selected. A central computing device (CCD) determines a volume of ink required to form the images and communicates with a plurality of printers that are geographically remote from the CCD. Each of the plurality of printers communicates to the CCD an ink specification available at the printer, a volume of ink available and optionally substrates that are available at the printer location. The CCD selects a printer or printers from the plurality of printers to fulfill the print job considering the geographic location of the printer(s), the ink specification available to the printer, and the volume of ink available at the printer. The CCD provides to the printer information and specifications which may include an image specification, an ink specification, a waveform specification and a substrate specification.