An ink cartridge chip comprising an interface unit, a control unit, and a storage unit, wherein: the interface unit is configured to receive a light control command sent from an imaging device, and the light control command comprises ink cartridge identification information; the storage unit is configured to store autogenic identification information and a state flag, and the state flag comprises an executable state or a non-executable state; the control unit is connected to any light-emitting unit, and is configured to execute the light control command, wherein a type of the light control command comprises a light-lighting-up command or a light-extinguishing command; and the control unit is connected to the interface unit and the storage unit, and is configured to, when the interface unit receives the light control command, control the light-emitting unit to execute the light control command based on the type of the light control command and the state flag in the storage unit; after the light-emitting unit executes the light control command, to re-determined the state flag based on an association relationship between the ink cartridge identification information and the autogenic identification information; wherein in a case that the ink cartridge identification information is associated with the autogenic identification information, the control unit changes the state flag in the storage unit from the executable state to the non-executable state or from the non-executable to the executable state, and wherein the state flag indicates either whether the light-lighting-up command is executable or whether the light-extinguishing command is executable. the interface unit is configured to receive a light control command sent from an imaging device, and the light control command comprises ink cartridge identification information; the storage unit is configured to store autogenic identification information and a state flag, and the state flag comprises an executable state or a non-executable state; the control unit is connected to any light-emitting unit, and is configured to execute the light control command, wherein a type of the light control command comprises a light-lighting-up command or a light-extinguishing command; and the control unit is connected to the interface unit and the storage unit, and is configured to, when the interface unit receives the light control command, control the light-emitting unit to execute the light control command based on the type of the light control command and the state flag in the storage unit; after the light-emitting unit executes the light control command, to re-determined the state flag based on an association relationship between the ink cartridge identification information and the autogenic identification information; wherein in a case that the ink cartridge identification information is associated with the autogenic identification information, the control unit changes the state flag in the storage unit from the executable state to the non-executable state or from the non-executable to the executable state, and wherein the state flag indicates either whether the light-lighting-up command is executable or whether the light-extinguishing command is executable.