COLORIMETER, INFORMATION PROCESSING SYSTEM, AND DATA CONTROL METHOD

An object of the present invention is to make reliability of data obtained by a colorimeter and operability relevant to the edit of the data of the colorimeter compatible. In order to attain the object, the same colorimetry data obtained by colorimetry processing of a colorimetry unit is stored in each of first and second storage units by a control unit. According to mirroring processing of the control unit, first data which is stored in the first storage unit and is not stored in the second storage unit, is stored in the second storage unit, and second data which is not stored in the first storage unit and is stored in the second storage unit, is stored in the first storage unit. A state in which data is not deleted from the first storage unit and the data is stored in the first storage unit is maintained, with respect to a request of deleting the data stored in the first storage unit from a communication unit of an external device, with data communication according to mass storage control. Data is deleted from the first storage unit, with respect to a request of deleting the data stored in the first storage unit from the communication unit of the external device, with data communication according to serial communication control.