Image Forming Apparatus, Key Management Server, Activation System, and Deactivation System

摘要

The image forming apparatus has: a network communication unit capable of communicating with a web server via a network; a web browser that accesses the web server via communication by the network communication unit, and acquires an activation key from the web server; and an activating unit that activates an optional function with the activation key. The key management server machine has: an activation key generating unit that generates an activation key corresponding to an optional function of an image forming apparatus; and a web server that receives identification information on the image forming apparatus and identification information on the optional function, and transmits an activation key to the image forming apparatus, the activation key corresponding to an optional function specified by the identification information on the optional function.