Examples of a fluidic die for thermal zone selection with a sequencer and decoders are described herein. In some examples, the fluidic die includes multiple thermal zones. Each thermal zone includes a temperature sensor, a fluidic actuator and a decoder. The fluidic die also includes shared thermal control circuitry to process an output of the temperature sensor in a selected thermal zone. The fluidic die further includes a sequencer to output a sequence state to select one thermal zone at a time for processing by the shared thermal control circuitry. The decoder of the selected thermal zone decodes the sequence state.

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, each set including a number 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 a register to hold an adjustment value that indicates how much to adjust a firing signal in the zone. A delay device per set delays the firing signal at a corresponding set. An adjustment device per set generates an adjusted firing signal based on the adjustment value, a delayed firing signal corresponding to the set, and at least one delayed firing signal received from another set. The delayed firing signals from different sets are time shifted relative to one another.

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.

In some examples, a fluid dispensing device includes a reservoir containing a fluid, fluidic actuators, and an interface to receive a data packet comprising information to control activation of the fluidic actuators, the data packet comprising a random number generated by a random number generator.

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.

Printheads and methods of operation. In one embodiment, a printhead includes a plurality of jetting channels comprising first jetting channels configured to jet a first print fluid and second jetting channels configured to jet a second print fluid, and a driver circuit communicatively coupled to actuators of the jetting channels. The driver circuit receives a drive waveform comprising first jetting pulses provisioned for the first print fluid and second jetting pulses provisioned for the second print fluid, and gating signals comprising a first active gating signal designated for jetting the first print fluid and a second active gating signal designated for jetting the second print fluid. The driver circuit selectively applies the first jetting pulses to actuators of the first jetting channels based on the first active gating signal, and selectively applies the second jetting pulses to actuators of the second jetting channels based on the second active gating signal.

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.

Printheads and methods of operation. In one embodiment, a printhead includes a plurality of jetting channels comprising first jetting channels configured to jet a first print fluid and second jetting channels configured to jet a second print fluid, and a driver circuit communicatively coupled to actuators of the jetting channels. The driver circuit receives a drive waveform comprising non-jetting pulses and jetting pulses, and gating signals comprising a first active gating signal designated for jetting the first print fluid, and a second active gating signal designated for jetting the second print fluid. The driver circuit selectively applies the non-jetting pulses and the jetting pulses to actuators of the first jetting channels based on the first active gating signal to jet the first print fluid, and selectively applies the jetting pulses to actuators of the second jetting channels based on the second active gating signal to jet the second print fluid.

A print component includes an array of fluidic actuation structures including a first column of fluidic actuating structures addressable by a set of actuation addresses, each fluidic actuating structure having a different one of the actuation addresses and having a fluidic architecture type, and a second column of fluidic actuating structures addressable by the set of actuation addresses. Each fluidic actuating structure of the second column has a different one of the actuation addresses and has a same fluidic architecture type as the fluidic actuating structure of the first column having the same address. An address bus communicates the set of addresses to the array of fluidic actuating structures, and a fire signal line communicates a plurality of fire pulse signal types to the array of fluidic actuating structures, the fire pulse signal type depending on the actuation address on the address bus.

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.