A liquid ejecting device includes a liquid ejecting portion configured to eject liquid from a nozzle, a closed space forming portion having a porous member inside thereof, and configured to form a closed space in which the nozzle opens, an discharging portion configured to discharge the liquid in the closed space forming portion, and a control portion configured to, when an amount of the liquid ejected from the liquid ejecting portion into the closed space forming portion reaches a prescribed value, cause the discharging portion to discharge the liquid in the closed space forming portion, wherein the control unit decreases the prescribed value as the number of stops increases, the number of stops being the number of times the liquid ejecting portion is stopped for a prescribed time or longer at a position other than a closed position where the closed space is formed.

A liquid discharge apparatus includes: a liquid discharge head configured to discharge a liquid from a nozzle, the liquid discharge head including: a liquid chamber communicating with the nozzle; a pressure generator configured to deform the liquid chamber to apply pressure to the liquid in the liquid chamber; and circuitry configured to apply a drive signal to the pressure generator to drive the pressure generator, the drive signal including at least one drive pulse. The drive pulse includes: an expansion element to expand the liquid chamber to a first volume; a holding element to hold the first volume of the liquid chamber expanded by the expansion element for a predetermined time; and a contraction element to contract the liquid chamber from the first volume held by the holding element to a second volume.

There is provided a printing apparatus including: a nozzle; a head; a signal generating circuit configured to generate, based on at least a first data representing a first driving waveform and a second data representing a second driving waveform different from the first driving waveform, a time division multiplex signal; a separating circuit to which the time division multiplex signal is inputted and which includes a switch configured to separate, from the time division multiplex signal, a first driving waveform signal representing the first driving waveform or a second driving waveform signal representing the second driving waveform, based on a synchronization signal; and a synchronization signal generating circuit configured to generate the synchronization signal indicating an opening and closing timing of the switch. The synchronization signal generating circuit is a circuit different from the signal generating circuit.

In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes a number of zones. Each zone includes a number of sets of fluidic devices. Each fluidic device includes a fluid chamber and a fluid actuator disposed in the chamber. Each fluidic device also includes a sensor to sense a characteristic of the zone and an adjustment device. The adjustment device 1) delays a firing signal received from a previous zone as it passes by each set of fluidic devices and 2) adjusts the firing signal as it enters the zone based on a sensed characteristic.

A liquid discharge method includes: calculating a first print time to print original image data on a print medium; generating rotated image data by rotating the original image data by a predetermined angle; calculating a second print time to print the rotated image data on the print medium; comparing the first print time and the second print time to determine whether the first print time is larger than the second print time; generating print image data according to the rotated image data in response to a determination in which the first print time is larger than the second print time; generating print image data according to the original image data in response to a determination in which the first print time is smaller than the second print time; and displaying a position and a direction of the print medium based on the print image data.

A liquid discharge device including a drive circuit substrate that drives a piezoelectric element of a liquid discharge head, and that includes a substrate which includes a first wiring layer having a first wiring through which the first drive signal propagates, a second wiring layer having a second wiring through which the second drive signal propagates, and a third wiring layer located between the first wiring layer and the second wiring layer and having a fourth wiring through which the reference voltage signal propagates, in which a third wiring through which the third drive signal propagates is provided on any one of the first wiring layer, the second wiring layer, and the third wiring layer.

An image forming apparatus includes: a piezoelectric element with a common electrode on one side and an individual electrode on another side; a nozzle; and circuitry. The circuitry selects one from drive signals and supplies the one drive signal to the piezoelectric element via the individual electrode, to discharge a droplet through the nozzle to form an image. Each drive signal includes waveform pulses including a main pulse that rises in a slope shape during a rising time and finishes rising at an end time. The circuitry generates the drive signals so that the end time of a less influential drive signal other than a most influential drive signal falls within a range of the rising time of the main pulse of the most influential drive signal; selects the one drive signal based on an image to be formed; and supplies the one drive signal to the piezoelectric element.

A liquid discharge device includes: a piezoelectric element to which a drive voltage is applied; a nozzle from which a liquid is to be discharged in accordance with a change of the drive voltage; and circuitry configured to: generate: a first drive waveform including first multiple pulses switchable at first switch timings; and a second drive waveform including second multiple pulses different from the first multiple pulses switchable at second switch timings, at least one the first switch timings of the first multiple pulses of the first drive waveform and at least one of the second switch timings of the second multiple pulses of the second drive waveform are the same; select first selected pulses from the first multiple pulses in the first drive waveform; and select second selected pulses from the second multiple pulses in the second drive waveform.

Provided is an image recording method including an applying step of applying a pretreatment liquid containing water and an aggregating agent onto an impermeable base material and applying an ink containing water and a colorant onto a region of the impermeable base material where the pretreatment liquid has been applied, and a drying step of drying the ink applied onto the region to obtain an image, in which the drying step includes blowing of hot air at a wind speed of greater than 15 m/s to the ink applied onto the region, and in a case where the number of grams of the ink applied per 1 m.sup.2 in an image area with a density of 100% is defined as X, and the number of grams of the pretreatment liquid applied per 1 m.sup.2 in the image area with a density of 100% is defined as Y, a viscosity of a kneaded material obtained by adding (6.5Y/X) mg of the pretreatment liquid to 10 g of the ink and defoaming and kneading the mixture at 200 rpm for 5 minutes is in a range of 30 mPa.Math.s to 500 mPa.Math.s.

In the print data for a nozzle of a printer, white dots are replaced by pre-ejection pulses. One or more repetitions of the pre-ejection pulses may be inserted into the print data, depending on the actual print speed of the printer, to determine print speed-dependent print data with which the nozzle is activated to print a print image with high print quality.