In an example, a method for compensating a misalignment introduced by a printing process comprises printing a plurality of first symbols onto a print media with a first printing liquid at spaced-apart locations on the print media, printing a plurality of second symbols onto the print media with a second printing liquid such that each second symbol overlaps a corresponding first symbol by a different symbol offset amount, identifying a first symbol and the corresponding second symbol, and the respective symbol offset amount, that represent a correct alignment between the plurality of first symbols and the plurality of second symbols, and adjusting a print parameter according to the identified symbol offset amount.

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.

A printing device is provided comprising a camera to capture an image of at least a portion of a print substrate; a controller to determine a location of a portion of a side edge of the print substrate from the image to determine a distance of the print substrate from a predetermined location; and an adjustment apparatus to adjust the entire substrate laterally, relative to the direction of transport of the print substrate, based on the determined location.

A printer includes head that performs printing by ejecting ink at a position of ejection of the ink in a print coordinate system, camera that captures an image of an area where the ink is ejected and outputs the image in an image coordinate system, camera capturing an image of calibration pattern printed by ejecting the ink at a calibration ejection position and outputting the image including calibration pattern, the calibration ejection position being a position at which calibration pattern is printed by ejecting the ink, and calculator that calculates the amount of displacement between the position of calibration pattern in the image coordinate system and the calibration ejection position in the print coordinate system.

In a state where a distance from an ejection port surface of an ejection head to a predetermined position corresponds to a first distance, a period detection unit detects a first period from when ejection of a droplet from an ejection port is started until when a droplet detection unit detects the droplet, and in a state where the distance from the ejection port surface of the ejection head to the predetermined position is changed to a second distance by a change unit, the period detection unit detects a second period from when ejection of a droplet from the ejection port is started until when the droplet detection unit detects the droplet, the second distance being different from the first distance. A calculation unit calculates an ejection speed of the droplet, based on the first distance, the second distance, the first period, and the second period.

A liquid jetting apparatus jetting a liquid onto a recording medium conveyed in a first direction includes head units arranged in a second direction orthogonal to the first direction. One head unit includes nozzle chips; one nozzle chip has a nozzle arrangement area wherein nozzles are aligned in a third direction crossing the first and second directions. The nozzle chip is arranged to be shifted relative to another nozzle chip in a direction crossing the first and second directions and different from the third direction. The head unit has a first overlapping portion wherein nozzle arrangement areas of first and second nozzle chips included in the nozzle chips partially overlap with each other in the first direction. The liquid jetting apparatus has a second overlapping portion wherein nozzle arrangement areas of third and fourth nozzle chips included in the head units partially overlap with each other in the first direction.

A method may include positioning first and second printhead die within a die carrier, using a registration pin of the die carrier to align the first and second printhead die and fixing the position of the first and second printhead die within the die carrier.

There is provided an image recording apparatus including: a conveyor, a recording head, a carriage and a controller. In a case that the controller causes a not less than two copies of a same image to be recorded, at a time of recording of a first copy of the not less than two copies, the controller generates first discharge data, obtains blank information, and performs the recording of the first copy by a multi pass recording based on the first discharge data, regardless of the blank information. At a time of recording of a second copy of the not less than two copies, the controller generates second discharge data and performs the recording of the second copy by at least one of a single pass recording and the multi pass recording, based on the second discharge data.

Described herein are bioprinters comprising: one or more printer heads, wherein a printer head comprises a means for receiving and holding at least one cartridge, and wherein said cartridge comprises contents selected from one or more of: bio-ink and support material; a means for calibrating the position of at least one cartridge; and a means for dispensing the contents of at least one cartridge. Further described herein are methods for fabricating a tissue construct, comprising: a computer module receiving input of a visual representation of a desired tissue construct; a computer module generating a series of commands, wherein the commands are based on the visual representation and are readable by a bioprinter; a computer module providing the series of commands to a bioprinter; and the bioprinter depositing bio-ink and support material according to the commands to form a construct with a defined geometry.

In a control part of a printer, a main area information holding part holds information prescribing a plurality of main areas which are obtained by dividing at least a portion in a facing surface of a head into a plurality of areas in a predetermined direction. A sub-area information holding part holds information prescribing a plurality of sub-areas which are obtained by dividing the main area into a plurality of areas in the predetermined direction. The initial setting part designates the settings relating to corrections in units of the main areas. In a case where correction amounts of darkness based on the initial setting are different between a first main area and a second main area which adjoin each other among the plurality of main areas, the re-setting part maintains or redesignates the settings relating to corrections designated with respect to the first main area in units of the sub-areas.