Patent ID: 8591006

Claim:
An adapter mounted on an ink-jet printer, comprising an inner chamber for accommodating an ink cartridge and a chip set on the adapter, wherein said chip has a contact surface contacting with the printer, the contact surface is provided with an information contact and two detecting electrical contacts, and said information contact and two detecting electrical contacts are electrically connected with the printer, characterized in that a memory for storing an ink information is arranged on the chip, and said chip is provided with a non-contact trigger switch comprising an elastic component, a ferromagnetic component connected with the elastic component and contacts, the contacts of the non-contact trigger switch are electrically connected with said two detecting electrical contacts respectively, when a non-contact trigger mechanism on the ink cartridge passes through an acting scope of the non-contact trigger switch, the ferromagnetic component is attracted by the non-contact trigger mechanism to move towards the non-contact trigger mechanism and become disconnected with the contacts of the non-contact trigger switch, and after the non-contact trigger mechanism is out of the acting scope of the non-contact trigger switch, the ferromagnetic component is attracted by the elastic component to move towards the contacts of the non-contact trigger switch till they contact.