Abstract: In some examples, a fluid dispensing device component includes an interface to communicate with a fluid dispensing system, and a controller to stream data of a fluid dispensing device through the interface to the fluid dispensing system in a first time interval. In a second time interval, the controller determines whether the fluid dispensing system has provided an indication that the fluid dispensing system is to send information to the fluid dispensing device component through the interface, and in response to determining that the fluid dispensing system has not provided the indication, continues to stream data of the fluid dispensing device through the interface to the fluid dispensing system.

Abstract: In various examples, a fluid ejection device may include a substrate with a fluid feed hole and a corrosion-detecting conductive path or sensor disposed behind a wall of the fluid feed hold. The corrosion-detecting conductive path or sensor may close a circuit in response being exposed to a fluid contained within the fluid feed hole.

Abstract: In various examples, a fluid ejection die, or a device such as a printhead or printbar on which the fluid ejection device is installed, may include a sensor that detects mechanical force imposed by a system in which the fluid ejection die is installed. There also may be memory, as well as a logic operably coupled with the sensor and the memory. The logic may extract information from a signal raised by the sensor and store the information in the memory. The information may have been encoded into the signal via mechanical interaction between a component of the system and the sensor. The mechanical interaction may have been modulated by the system to encode the information.

Abstract: A fluid ejection device may include fluid ejectors, fluid pumps to circulate fluid to the fluid ejectors, a first actuation signal line and at least one second actuation signal line. The first actuation signal line is connected to each of the fluid ejectors and each of the fluid pumps along which a first signal is transmittable to actuate a selected one of fluid ejectors and the fluid pumps. The at least one second actuation signal line is connected to the fluid pumps along which a second signal is transmittable to actuate a selected one of the fluid pumps.

Abstract: In some examples, a fluid dispensing device includes a plurality of fluidic actuators, activate data storage elements, and sense measurement storage elements. The fluid dispensing device includes a decoder to detect, based on a first activate indicator of the activate indicators, that a first fluidic actuator is to be activated, detect, based on a first sense measurement indicator of the sense measurement indicators that a sense measurement is to be performed on the first fluidic actuator, and in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed on the first fluidic actuator, suppress activation of the first fluidic actuator at a first time, and activate the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator.

Abstract: In some examples, a fluid dispensing device includes a plurality of fluidic actuators and a decoder to detect that a first fluidic actuator is to be activated, and detect that a sense measurement is to be performed. In response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed, the decoder is to suppress activation of the first fluidic actuator at a first time, and activate the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator.

Abstract: In some examples, a fluid dispensing device includes a plurality of fluidic actuators and a decoder. The decoder is to detect that an activated sense measurement is to be performed for a first fluidic actuator of the plurality of fluidic actuators in a first time group comprising a plurality of activation intervals for respective fluidic actuators. In response to detecting that the activated sense measurement is to be performed for the first fluidic actuator in the first time group, the decoder activates the first fluidic actuator in the first time group to perform the activated sense measurement for the first fluidic actuator, and suppresses an activation pulse to the first fluidic actuator in a second time group that follows the first time group to perform a reference measurement for the first fluidic actuator in the second time group, the second time group comprising a plurality of activation intervals for respective fluidic actuators.

Abstract: Examples of a fluidic die for thermal zone selection with a circular shift register are described herein. In some examples, the fluidic die includes multiple thermal zones. Each thermal zone includes a temperature sensor and a fluidic actuator. The fluidic die also includes shared thermal control circuitry to process an output of the temperature sensor of a selected thermal zone. The fluidic die further includes a circular shift register that includes multiple memory elements. Each memory element is associated with one thermal zone. A token circulates within the circular shift register to select one thermal zone at a time for processing by the shared thermal control circuitry.

Abstract: In some examples, a system includes a device support to receive a fluid dispensing device, and a controller to identify, based on data controlling activation of fluidic actuators, a fluidic actuator that is to be activated in a first activation cycle of a group of activation cycles that correspond to activation intervals of respective fluidic actuators of a group of fluidic actuators of the fluid dispensing device, the identified fluidic actuator being part of the group of fluidic actuators. To perform a sense measurement for the identified fluidic actuator, the controller suppresses activation of the identified fluidic actuator in the first activation cycle, and causes activation of the identified fluidic actuator in a sense measurement cycle different from the first activation cycle, the sense measurement cycle being part of the group of activation cycles.

Abstract: Fluid ejection devices with multiple activation modes are disclosed. An example printhead assembly includes a fluid ejection nozzle, a first resistor fluidically coupled to the fluid ejection nozzle, and a second resistor fluidically coupled to the fluid ejection nozzle. The example printhead also includes an addressing circuit to receive a nozzle address and an activation mode to activate the fluid ejection nozzle. The activation mode determines which of the first resistor and the second resistor are to be energized.

Abstract: In some examples, a fluid dispensing device includes a plurality of fluidic actuators, and a plurality of sense measurement storage elements to store sense measurement indicators for indicating whether sense measurement is to be performed for fluidic actuators of the plurality of fluidic actuators. The fluid dispensing device further includes a controller to control setting of the sense measurement indicators in the sense measurement storage elements to select which fluidic actuator is to be subject to a sense measurement.

Abstract: In some examples, a fluid dispensing device includes a plurality of fluidic actuators and a decoder. The decoder is to detect that an activated sense measurement is to be performed for a first fluidic actuator of the plurality of fluidic actuators in a first time group comprising a plurality of activation intervals for respective fluidic actuators. In response to detecting that the activated sense measurement is to be performed for the first fluidic actuator in the first time group, the decoder activates the first fluidic actuator in the first time group to perform the activated sense measurement for the first fluidic actuator, and suppresses an activation pulse to the first fluidic actuator in a second time group that follows the first time group to perform a reference measurement for the first fluidic actuator in the second time group, the second time group comprising a plurality of activation intervals for respective fluidic actuators.

Abstract: A fluid ejection device may include fluid ejectors, fluid pumps to circulate fluid to the fluid ejectors, a first actuation signal line and at least one second actuation signal line. The first actuation signal line is connected to each of the fluid ejectors and each of the fluid pumps along which a first signal is transmittable to actuate a selected one of fluid ejectors and the fluid pumps. The at least one second actuation signal line is connected to the fluid pumps along which a second signal is transmittable to actuate a selected one of the fluid pumps.

Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes an array of firing subassemblies grouped into zones. Each firing subassembly includes 1) a firing chamber, 2) a fluid actuator disposed, and 3) a sensor plate. The fluidic die also includes a measurement device per zone to determine a state of a selected sensor plate. The fluidic die includes a selector per firing subassembly to couple the selected sensor plate to the measurement device. The fluidic die also includes a transmission path between each selector and its corresponding sensor plate. A first transmission path for a particular sensor plate has physical properties such that a parasitic capacitance along the first transmission path corresponds to a parasitic capacitance for a second transmission path of a second sensor plate in the zone, regardless of a difference in transmission path length.

Abstract: A fluidic die may include a substrate supporting a fluid actuator address line and first and second groups of fluid actuators connected to the fluid actuator address line. The first group of fluid actuators may include first and second types of fluid actuators having different operating characteristics. The second group of fluid actuators may include the first and the second types of fluid actuators. The fluid actuators of the first and second groups have addresses such that a fluid actuator of the first type in the first group and a fluid actuator of the second type in the second group are both enabled in response to a single enabling event on the fluid actuator address line.

Abstract: 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.

Abstract: Measuring an inkjet nozzle may include taking at least one impedance measurement after the firing command is sent to detect the presence of a drive bubble and taking another impedance measurement to detect a collapse of the drive bubble.

Abstract: Examples include a fluidic die. The fluidic die comprises a plurality of fluid actuators arranged in respective sets of fluid actuators. The fluidic die further includes a plurality of fluidic sensors, where the fluidic sensors are arranged in respective sets, and each respective fluidic sensor is disposed proximate a respective fluid actuator. The fluidic die further comprises a plurality of current sources including a respective current source for each respective set of fluidic sensors. Furthermore, the fluidic die comprises a fluidic sensor test node. For each respective set of fluidic sensors, the fluidic die comprises respective fluidic sensor test logic, where the respective fluidic sensor test logic for each respective set of fluidic sensors is coupled between the respective current source and the fluidic sensor test node to selectively connect each respective current source to the fluidic sensor test node.

Abstract: Examples include a fluidic die. The fluidic die may comprise an array of fluid actuators, an actuation data register, a mask register, and actuation logic. The actuation data register may store actuation data that indicates fluid ejectors to actuate for a set of actuation events. The mask register may store mask data that indicates a set of fluid actuators enabled for actuation for a respective actuation event of the set of actuation events. The actuation logic may electrically actuate a subset of the fluid actuators based at least in part on the actuation data register and the mask register for the respective actuation event.

Abstract: A fluidic die may include a substrate supporting a fluid actuator address line and first and second groups of fluid actuators connected to the fluid actuator address line. The first group of fluid actuators may include first and second types of fluid actuators having different operating characteristics. The second group of fluid actuators may include the first and the second types of fluid actuators. The fluid actuators of the first and second groups have addresses such that a fluid actuator of the first type in the first group and a fluid actuator of the second type in the second group are both enabled in response to a single enabling event on the fluid actuator address line.