Patent ID: 11890874
Assignee: GEEHY MICROELECTRONICS INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 16:
17. A circuit substrate, applied in an nozzle ink cartridge, wherein the nozzle ink cartridge includes a first circuit substrate, an accommodation portion, and an ink container that is replaceable;
the first circuit substrate is configured with a nozzle circuit and a first interface circuit which are electrically connected to each other, the nozzle ink cartridge being electrically connected or disconnected to an image forming apparatus through the first interface circuit; the ink container is contained in the accommodation portion;
the ink container is configured with a first storage circuit and a fourth interface circuit which are electrically connected to each other; the fourth interface circuit is electrically connected to a third interface circuit; and the first storage circuit at least stores ink amount information of the ink container;
wherein the circuit substrate is configured with a second interface circuit, the third interface circuit, and a switching circuit; the second interface circuit and the first interface circuit are electronically connected to each other; and the switching circuit is configured to cause an electrical disconnection from the image forming apparatus through an electrical disconnection between the second interface circuit and the third interface circuit.