Patent ID: 8811133

Claim:
A writing system, comprising: a first writing device and a second writing device; an information processor apparatus that is connected to the first writing device and the second writing device; a cartridge that is accommodated in the first writing device, the cartridge including a recording medium and a memory unit, wherein the first writing device comprises: a first writing unit that writes data on the recording medium and, when unwritten data is generated while writing the data on the recording medium, writes the unwritten data to the memory unit, and further transmits, to the information processor apparatus, dummy information for inhibiting the unwritten data to be obtained by the information processor apparatus, the second writing device comprises: a second writing unit that writes, on the recording medium, the unwritten data written to the memory unit after the cartridge is moved from being accommodated in the first writing device to being accommodated in the second writing device, and when the information processor apparatus receives the dummy information from the first writing unit, the information processor apparatus outputs an instruction for moving the cartridge from the first writing device to the second writing device.