A fire pulse control circuit for a fluidic die includes input logic to receive a series of zone temperatures, each corresponding to a different zone of the fluidic die, each zone having a corresponding fire pulse having a width corresponding to a pulse temperature, the width adjustable from a minimum width corresponding to a maximum pulse temperature to a maximum width corresponding to a minimum pulse temperature. For each zone temperature, adjustment logic outputs a zone adjustment signal to decrease the fire pulse width of the corresponding zone if the zone temperature is greater than the pulse temperature and the pulse temperature is less than the maximum pulse temperature, and outputs a zone adjustment signal to increase the fire pulse width of the corresponding zone if the zone temperature is less than the pulse temperature and the pulse temperature is greater than the minimum pulse temperature.

In some examples, a fluid dispensing device component includes an input to receive a control signal from the fluid dispensing system, the control signal for activating the fluidic actuators of the fluid dispensing device during a fluidic operation mode. The fluid dispensing device component includes a nonvolatile memory, and a controller to, during a memory write mode, write a first portion of the nonvolatile memory to a first programmed level responsive to the control signal being activated for a first time duration, and write a second portion of the nonvolatile memory to a second programmed level responsive to the control signal being activated for a second time duration different from the first time duration, the second programmed level being different from the first programmed level.

A printing apparatus for printing using a printhead including a plurality of nozzles each configured to discharge ink and a plurality of sensors, corresponding to the plurality of nozzles, for detecting a discharge state of ink from the plurality of nozzles, judges a discharge state. More specifically, the apparatus prints, based on print data, an image by driving the printhead under a first drive condition to discharge the ink from the printhead to a first area, discharges ink to a second area different from the first area by driving the printhead, based on inspection data, under a second drive condition different from the first drive condition, and judges a discharge state of each nozzle by monitoring an output from each sensor at a timing of driving the printhead under the second drive condition.

A fluidic die includes primitives arranged to form a number of primitive zones, each primitive zone including a memory to store adjustment data, and at least one signal adjuster to receive a fire signal, and to adjust the received fire signal based on the stored adjustment data to provide an adjusted fire signal to each primitive of the primitive zone. The fluidic die includes an address bus and a set of data lines, each data line corresponding to a different one of the primitives. Mode circuitry directs address data from the address bus to each primitive and print data from each data line to the corresponding primitive when a mode signal has a first value, and directs data representing adjustment data from one of the address bus and the set of data lines to at least one of the memories when the mode signal has a second value.

A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a state of a dot formed on a recording medium by the liquid discharged from the nozzle, as a recording condition, and a driving step of applying the drive pulse that varies depending on the recording condition acquired in the acquisition step, to the drive element. The drive pulse may include a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential may be to be applied after the first potential, and the third potential may be to be applied after the second potential.

A recording apparatus includes a recording head including a plurality of ejection ports and a recording element, a driving unit configured to apply a driving pulse to drive the recording element, a temperature detection unit configured to detect a temperature change in a vicinity of the recording element, a determination unit configured to determine an ink ejection state of each of the ejection ports on the basis of the temperature change detected by the temperature detection unit, an acquisition unit configured to acquire information about atmospheric pressure around the recording head, and a setting unit configured to, when the determination unit determines the ink ejection state, set the driving pulse to be applied by the driving unit to the recording element on the basis of the information about the atmospheric pressure acquired by the acquisition unit.

A printing apparatus is disclosed. The printing apparatus comprises a printhead and a controller. The printhead is to spit a printing fluid comprising a first mode and a second mode. The first mode corresponds to using a first energy level to spit the printing fluid and the second mode corresponds to using a second energy level to spit the printing fluid. The second energy level comprises a higher energy level than the first energy level. The controller is to determine a decap risk zone associated with the printing fluid, determine in view of the decap risk zone a decap location, and instruct the printhead to spit using the second mode at the decap location.

A printing apparatus for printing using a printhead including a plurality of nozzles, each configured to discharge ink, and a plurality of sensors, corresponding to the plurality of nozzles, for detecting a discharge state of ink from the plurality of nozzles, judges a discharge state. The apparatus prints, based on print data, an image by driving the printhead under a first drive condition to discharge the ink from the printhead to a first area, discharges ink to a second area different from the first area by driving the printhead, based on inspection data, under a second drive condition different from the first drive condition, and judges a discharge state of each nozzle by monitoring an output from each sensor at a timing of driving the printhead under the second drive condition.

The present invention discharges ink from a plurality of inkjet heads and is used when performing drive whereby one droplet or a plurality of droplets are discharged onto and united on one pixel. A drive signal includes a drive waveform comprising N number (N being an integer of at least 2) of drive waveform elements and is configured so as to fulfil the relationship 1.1 Tc≤Ts≤1.4 Tc, when Tc is the natural vibration cycle determined from the inkjet head structure and Ts is the time from the start point of the drive waveform to the start point of the subsequent drive waveform. As a result, velocity deviation caused by the resonant frequency of a piezoelectric actuator driving the inkjet head can be suppressed when driving an inkjet head using multiple gradations.

A printing apparatus for printing using a printhead including a plurality of nozzles, each configured to discharge ink, and a plurality of sensors, corresponding to the plurality of nozzles, for detecting a discharge state of ink from the plurality of nozzles, judges a discharge state. The apparatus prints, based on print data, an image by driving the printhead under a first drive condition to discharge the ink from the printhead to a first area, discharges ink to a second area different from the first area by driving the printhead, based on inspection data, under a second drive condition different from the first drive condition, and judges a discharge state of each nozzle by monitoring an output from each sensor at a timing of driving the printhead under the second drive condition.