A system is disclosed. The system includes at least one physical memory device to store drop size logic and one or more processors coupled with the at least one physical memory device to execute the drop size logic to receive first ink drop size data for each of a plurality of color planes associated with a first halftone design, generate first ink drop count data for each of the plurality of color planes based on the first halftone design and print job data, generate second ink drop count data for each of the plurality of color planes based on a second halftone design and the print job data and generate second ink drop size data for each of the plurality of color planes associated with the second halftone design based on the first ink drop count data, the first ink drop size data and the second ink drop count data.

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different print head/substrate scan offsets, offsets between print heads, the use of different nozzle drive waveforms, and/or other techniques. Optionally, patterns of fill variation can be introduced so as to mitigate observable line effects in a finished display device. The disclosed techniques have many other possible applications.

A system is disclosed. The system includes at least one physical memory device to store drop size logic and one or more processors coupled with the at least one physical memory device to execute the drop size logic to receive first ink usage amount data for each of a plurality of color planes associated with a first halftone design and print job data, receive first ink drop size data for each of a plurality of color planes associated with the first halftone design, receive second ink drop count data for each of the plurality of color planes associated with a second halftone design and the print job data and determine second ink drop size data for each of the plurality of color planes based on the corresponding first ink usage amount data, the first ink drop size data and the second ink drop count data.

A printing system is described herein. The printing system has a massive base disposed on a flotation support, a flotation substrate support disposed on the base, a print support comprising a printhead assembly support and an auxiliary support, a printhead assembly coupled to the printhead assembly support, and a printhead supply assembly coupled to the auxiliary support.

An inkjet printing system with a droplet measurement apparatus is described herein. The droplet measurement apparatus has a light source with a collimating optical system, an imaging device disposed along an optical path of the collimating optical system, and a droplet illumination zone in the optical path of the collimating optical system, the droplet illumination zone having a varying droplet illumination location, wherein the light source, the imaging device, or both are adjustable to place a focal plane of the imaging device at the droplet illumination location. The droplet measurement apparatus is structured to accommodate at least a portion of a dispenser of the printing system within the droplet illumination zone.

A recording device includes: a first nozzle group including a plurality of nozzles configured to discharge, to a medium, a first dot that is a dot of a reaction liquid; a second nozzle group including a plurality of nozzles configured to discharge, to the medium to which the reaction liquid is discharged, a second dot that is a dot of ink containing a color material that coagulates with the reaction liquid; and a control unit configured to control discharging of the first dot by the first nozzle group and discharging of the second dot by the second nozzle group, in which the control unit controls arrangement, on the medium, of the first dot discharged by the first nozzle group so as to be more regular than arrangement, on the medium, of the second dot discharged by the second nozzle group.

In a device and a method for improving the print image uniformity, at least one print image is printed by a printer with at least one print bar that has at least one print head with a plurality of print nozzles. An image detector having a plurality of dot/image detection regions detects at least one value profile of measured inking intensities. A comparator compares the value profile with at least one reference value, and generates correction values dependent thereon.

A droplet discharge apparatus includes a plurality of dischargers and a control device. The plurality of dischargers discharge droplets. The control device acquires characteristic values of end portions of areas on which the droplets discharged by the plurality of dischargers land, from a measurement of the end portions. The control device adjusts the plurality of dischargers such that a difference between the characteristic values is within a range.

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different print head/substrate scan offsets, offsets between print heads, the use of different nozzle drive waveforms, and/or other techniques. Optionally, patterns of fill variation can be introduced so as to mitigate observable line effects in a finished display device. The disclosed techniques have many other possible applications.

Provided is an ink jet recording method in which an image is formed by applying an ink containing a coloring material and a processing liquid containing a flocculant to a surface of a recording medium by a droplet discharge device to coalescence, wherein an application amount of the processing liquid is changed in accordance with an application amount of the ink for each unit area, and is controlled to be 5 g/m.sup.2 or less in all of the unit areas in which the images are formed, and when the image is formed in a plurality of printing passes, an average value of the application amounts of the processing liquid in each printing pass in the unit areas in which the application amount of the processing liquid is 0.8 g/m.sup.2 or more is controlled so that a deviation when compared between the printing passes is within ±30%.