A status information notification system includes a network terminal device and a communication processing device that enables the network terminal device to communicate with another terminal device through a communication network. The network terminal device includes a terminal controlling system that controls processing of functional units and outputs status information representing operational status of the network terminal device, and a sleeping system that lowers a power consumption of the terminal control system when a predetermined condition is satisfied. The communication processing device has an examining system that examines whether a request for the status information is received from the another terminal device. A communication controlling system obtains the status information from a storing system or the terminal controlling system, and transmits the obtained status information to the communication network. The status information is obtained from the storing system when the terminal control system is in the sleep status.