Liquid discharging device storing a use history
According to one embodiment, a liquid discharging device includes a storage unit storing a use history indicating whether the liquid discharging device has been previously used, and a discharging device mounted on a liquid dispensing apparatus and configured to discharge a liquid when supplied a discharge voltage in response to a discharge signal received from the liquid dispensing apparatus.
1. A liquid discharging device, comprising:
a base member configured to be mounted on a liquid dispensing apparatus;
a storage unit on the base member and storing a use history indicating whether the liquid discharging device has been previously used;
a discharging device on the base member and configured to discharge a liquid when supplied a discharge voltage in response to a discharge signal received from the liquid dispensing apparatus;
a communication unit on the base member and configured to communicate to and from the liquid dispensing apparatus; and
a processor on the base member and configured to transmit the use history from the storage unit to the liquid dispensing apparatus via the communication unit, and rewrite the use history in the storage unit to indicate the liquid discharging device has been previously used according to a request received through the communication unit.
2. The liquid discharging device according to claim 1 , wherein the processor changes the use history stored in the storage unit only after the liquid has been discharged.
3. The liquid discharging device according to claim 1 , further comprising:
a liquid holding container fluidly connected to the discharging device, wherein
the processor changes the use history stored in the storage unit after the liquid holding container has been filled with the liquid.
4. The liquid discharging device according to claim 1 , wherein the communication unit comprises a modulation/demodulation circuit and an antenna for wirelessly communicating with the liquid dispensing apparatus.
5. The liquid discharging device according to claim 1 , wherein the discharging device comprises a piezoelectric film.
6. The liquid discharging device according to claim 1 , wherein the discharging device comprises a heater.
7. The liquid discharging device according to claim 1 , wherein the communication unit comprises a contact unit for physically and electrically connecting to the liquid dispensing apparatus.
8. The liquid discharging device according to claim 1 , wherein the base member is a contact-type IC card.
9. The liquid discharging device according to claim 1 , wherein the storage unit is a non-volatile memory unit.
10. The liquid discharging device according to claim 1 , wherein the storage unit stores a control program that is executed by the processor when the base member is mounted on the liquid dispensing apparatus.
11. The liquid discharging device according to claim 1 , further comprising:
a plurality of discharging devices on the base member, each and configured to discharge a liquid when supplied a discharge voltage in response to a discharge signal received from the liquid dispensing apparatus.
12. The liquid discharge device according to claim 11 , wherein the plurality of discharging devices are aligned in a row on the base member.