An individual identifying device includes a plurality of generation units and an imaging unit. The generation units generate a pattern on an object. The imaging unit acquires an image of the pattern in conjunction with generation of the pattern.

An individual identifying device includes a plurality of generation units and an imaging unit. The generation units generate a pattern on an object. The imaging unit acquires an image of the pattern in conjunction with generation of the pattern.

In some examples, a fluid ejection device includes a communication interface comprising a plurality of communication channel circuits capable of communicating over respective communication channels, and a configuration controller, responsive to an input, to selectively activate at least one communication channel circuit of the plurality of communication channel circuits, wherein different inputs to the configuration controller are to cause selective activation of different numbers of the plurality of communication channel circuits. The fluid ejection device further includes a nozzle controller responsive to data received through the activated at least one communication channel circuit to cause activation of at least one corresponding nozzle to eject fluid.

An integrated circuit to drive a plurality of fluid actuation devices includes a contact pad and a programmable pulldown device. The programmable pulldown device is electrically coupled to the contact pad. The programmable pulldown device is settable to any one of a plurality of resistances.

A high viscosity jetting method includes jetting a liquid by a valvejet printhead through a nozzle in a nozzle plate, wherein a section of a nozzle has a shape including an outer edge with a minimum covering circle, wherein the maximum distance from the outer edge to the centre of the minimum covering circle is greater than the minimum distance from the outer edge to the centre from the minimum covering circle times 1.2, and wherein the jetting viscosity of the liquid is at least 20 mPa.Math.s.

A coating method, a coating device and a light-emitting device, the coating method comprises: controlling an ink supply device to stop supplying ink to a micro nozzle when it is determined that the lowest end of an ink droplet from the micro nozzle reaches a first position; determining that the distance between the end of the micro nozzle and a substrate reaches a second distance, the second distance being preset; controlling the ink supply device to continue to supply ink, and controlling the micro nozzle to move relative to the substrate for a pattern coating. The disclosure provides a good pattern forming solution, thereby avoiding the technical problem in the prior art of inkjet printing apparatuses easily causing nozzle clogging.

A coating method, a coating device and a light-emitting device, the coating method comprises: controlling an ink supply device to stop supplying ink to a micro nozzle when it is determined that the lowest end of an ink droplet from the micro nozzle reaches a first position; determining that the distance between the end of the micro nozzle and a substrate reaches a second distance, the second distance being preset; controlling the ink supply device to continue to supply ink, and controlling the micro nozzle to move relative to the substrate for a pattern coating. The disclosure provides a good pattern forming solution, thereby avoiding the technical problem in the prior art of inkjet printing apparatuses easily causing nozzle clogging.

A molten droplet printing system and method can provide molten droplets without surface contact at the time of generation.

Methods and apparatus to selectively control ink evaporation in printhead nozzles are disclosed. An example printhead for use with a printer includes a plurality of nozzles (142) and a plurality of valves (144) positioned adjacent respective ones of the nozzles (142) to selectively control fluid flow through the respective nozzle (142).

The present invention relates to a process for producing a water-based ink for ink-jet printing, including the step of dispersing a pigment in a polymer by means of a disperser using dispersing media particles containing a zirconium compound to introduce the solid zirconium compound into the water-based ink, the water-based ink including the pigment-containing polymer particles and the solid zirconium compound, and having a zirconium compound content of not less than 2 ppm and not more than 200 ppm in terms of a concentration of zirconium in the water-based ink.