Head substrate, liquid discharge head, and liquid discharge apparatus
A head substrate including a liquid discharge element for discharging a liquid, the head substrate comprising a functional unit configured to realize a predetermined function, and a communication input unit to which communication data is to be inputted, wherein the communication data includes a first portion for setting a function of the functional unit and a second portion for controlling a supply of current to the functional unit.
1 . A head substrate including a liquid discharge element for discharging a liquid, the head substrate comprising:
a functional unit configured to realize a discharge detection function that detects that the liquid is discharged, and a digital temperature detection function that detects a temperature of the head substrate; and
a communication input unit to which communication data is to be inputted,
wherein the communication data includes a bit for not transmitting data for setting the discharge detection function, a bit for not transmitting data for setting the digital temperature detection function, a first portion for setting a function of the functional unit, and a second portion for controlling a supply of current to the functional unit.
2 . The head substrate according to claim 1 , wherein the functional unit includes a sensor for realizing the discharge detection function.
3 . The head substrate according to claim 2 , wherein the sensor is one of a plurality of sensors and the first portion is data for setting a sensor to be selected from the plurality of sensors.
4 . The head substrate according to claim 1 , wherein the functional unit includes a diode for realizing the digital temperature detection function.
5 . The head substrate according to claim 4 , wherein the diode is one of a plurality of diodes and the first portion is data for setting a diode to be selected from the plurality of diodes.
6 . The head substrate according to claim 1 , wherein the functional unit is configured to be capable of receiving an enable signal, and when the enable signal is one signal level, a current is supplied to the functional unit, and when the enable signal is another signal level, a supply of current to the functional unit is suppressed.
7 . The head substrate according to claim 1 , further comprising:
a plurality of electrodes including an electrode for receiving the communication data,
wherein the liquid discharge element is one of a plurality of liquid discharge elements, and
the plurality of electrodes and the plurality of liquid discharge elements are arranged in a side direction of the head substrate, and the functional unit is arranged between the plurality of electrodes and the plurality of liquid discharge elements.
8 . A liquid discharge head comprising:
the head substrate according to claim 1 ; and
a nozzle that corresponds to the liquid discharge element of the head substrate.
9 . A liquid discharge apparatus comprising:
the liquid discharge head according to claim 8 ; and
a conveyance mechanism configured to convey a printing medium.