To provide a buffer clear control system, a buffer clear control method and an information recording medium for clearing information for a receiving buffer, a printing buffer and/or a transmitting buffer for a printing device and clearing information for an interface receiving buffer and/or an interface transmitting buffer for a communication interface device in accordance with command information from the printing device.

An interface data analysis part 303 of the communication interface device 102 analyzes information received from the printing device 101. An interface buffer clear part 304 of the communication interface device 102 clears the interface receiving buffer 311 when the information is a receiving buffer clear command, and clears the interface transmitting buffer 312 when it is a transmitting buffer clear command.