The present disclosure relates to a printing apparatus with a plurality of nozzle heads and method for aligning a plurality of nozzle tips. The printing apparatus with a plurality of nozzle heads according to the present disclosure includes a first nozzle head having a first nozzle tip for discharging ink and a first moving part for moving the first nozzle tip, and disposed at one side of a working area on a substrate; a second nozzle head having a second nozzle tip for discharging ink and a second moving part for moving the second nozzle tip, and disposed at the other side of the working area on the substrate; and a first camera disposed above the substrate to observe the first nozzle tip and the second nozzle tip at the same time.

A liquid discharge apparatus includes a liquid discharge portion configured to discharge a liquid from a nozzle provided in a nozzle surface and move in a X-axis direction, and a detection portion configured to detect a liquid droplet adhering to the nozzle surface, including an irradiating portion configured to radiate irradiation light along the nozzle surface in an irradiating direction intersecting the scanning direction, and a light receiving portion configured to receive the irradiation light radiated from the irradiating portion, in which in the liquid droplet detection of detecting the liquid droplet, the liquid discharge portion moves in the X-axis direction on a −Z direction side of the detection portion in a state where the irradiating portion is caused to radiate the irradiation light.

A liquid discharge apparatus includes a liquid discharge portion configured to discharge a liquid from a nozzle provided in a nozzle surface and move in a X-axis direction, and a detection portion configured to detect a liquid droplet adhering to the nozzle surface, including an irradiating portion configured to radiate irradiation light along the nozzle surface in an irradiating direction intersecting the scanning direction, and a light receiving portion configured to receive the irradiation light radiated from the irradiating portion, in which in the liquid droplet detection of detecting the liquid droplet, the liquid discharge portion moves in the X-axis direction on a −Z direction side of the detection portion in a state where the irradiating portion is caused to radiate the irradiation light.

A method for printing a strain sensor on a component using an aerosol ink, the method including depositing the aerosol ink on the component using a print head, the aerosol ink comprising chromium containing particles, and monitoring a printing environment parameter associated with printing environment conditions to confirm the printing environment parameter is within a predetermined environmental range of a printing environment parameter baseline value while depositing the aerosol ink on the component using the print head, the printing environment parameter baseline value a predetermined preferred printing environment parameter value within the predetermined environmental range, the monitoring including monitoring an atmospheric composition of the printing environment.

A method for printing a strain sensor on a component using an aerosol ink, the method including depositing the aerosol ink on the component using a print head, the aerosol ink comprising chromium containing particles, and monitoring a printing environment parameter associated with printing environment conditions to confirm the printing environment parameter is within a predetermined environmental range of a printing environment parameter baseline value while depositing the aerosol ink on the component using the print head, the printing environment parameter baseline value a predetermined preferred printing environment parameter value within the predetermined environmental range, the monitoring including monitoring an atmospheric composition of the printing environment.

A method of processing phase signals for continuous inkjet printing, said method comprising: providing at least one phase signal, wherein said at least one phase signal is an analogue signal; converting the at least one phase signal into at least one corresponding digitised phase signal; and processing said at least one digitised phasing signal, wherein the processing comprises extracting at least one predetermined phase parameter from the at least one digitised phasing signal when the at least one digitised phasing signal is a time-domain digitalised phase signal, and wherein the at least one predetermined phase parameter comprises one or more time-domain signal features of the at least one digitised phasing signal.

A thermal inkjet printing device includes a fluidic die having a thermal sensor and a processor coupled to the fluidic die. The processor is to receive temperature data from the thermal sensor and determine a flow rate of liquid printing agent through the fluidic die based on the temperature data and an operating parameter for the fluidic die.

A thermal inkjet printing device includes a fluidic die having a thermal sensor and a processor coupled to the fluidic die. The processor is to receive temperature data from the thermal sensor and determine a flow rate of liquid printing agent through the fluidic die based on the temperature data and an operating parameter for the fluidic die.

An ejection apparatus includes an ejection head having an ejection port, a droplet detection unit, an acquisition unit, a control unit, and a decision unit. The droplet detection unit detects that a droplet ejected from the ejection port has reached a predetermined position. The acquisition unit acquires information regarding a velocity of movement of the detected droplet. The control unit controls the ejection head to eject the droplet from the ejection port. The decision unit decides a number of consecutive ejections of a plurality of droplets from the ejection head based on the acquired information regarding the velocities of each of the plurality of droplets ejected consecutively and detected by the droplet detection unit. If the acquisition unit acquires the information regarding velocities of detected droplets, the control unit controls the ejection head to consecutively eject the droplets from the ejection head based on the decided number of consecutive ejections.

Provided is a jetting driver that can be used for various types of heads with minimal changes. The jetting driver includes: an image board receiving raw image data and generating image data by transforming the raw image data into a form suitable for a type of heads used; and an interface board physically separated from the image board, receiving the image data, and transmitting the image data to the heads through a plurality of channels.