Patent ID: 8544980

Claim:
A liquid ejecting apparatus, which is able to be mounted with a cartridge which is provided with a memory device which stores liquid usage information relating to a consumption amount or a remaining amount of liquid accommodated in the cartridge and a unique ID which uniquely distinguishes the cartridge, comprising: a non-volatile memory for storing cartridge information including the unique ID of the cartridge and the liquid usage information relating to the cartridge mounted one or more times in the liquid ejecting apparatus; a control section which controls the non-volatile memory and the memory device of the cartridge mounted, wherein the control section performs writing which updates the liquid usage information more frequently in the memory device of the cartridge than in the non-volatile memory; and wherein the control section is configured to execute a fault countermeasure process in relation to the memory device of the cartridge in a case where a relationship between a first liquid consumption amount obtained from the liquid usage information stored in the memory device of the cartridge mounted in the liquid ejecting apparatus and a second liquid consumption amount obtained from the liquid usage information stored in the non-volatile memory with regard to the cartridge is outside of a permitted range set in advance.