An apparatus and method of transmitting a document between Multi-Function Products (MFPs) via a network, in which an MFP groups client devices and transmits a document to a plurality of client devices that belong to each group. When a plurality of image forming devices are connected to one another through a network, the apparatus includes a scanning portion for scanning a document and producing image data, a user interface for selecting a command for performing a function or a desired image forming device, a network interface connected to the image forming devices over the network for transmitting the scanned document to the selected image forming device, a display portion, and a controller for controlling the display portion to display information about the image forming devices existing on the network and transmitting the scanned image data to the selected image forming device via the network.