| 摘要 |
PROBLEM TO BE SOLVED: To easily prevent unauthorized or prankish copying when an image forming device is used by many unspecified users. SOLUTION: This image forming device 1 is equipped with at least one paper supply means 4 inside which specified paper is housed and an attachment/ detachment detection means 6 detecting the attachment/detachment of the means 4 to/from a device main body 2; and has a color image forming function. The device 1 is provided with an alarm device 8 and an alarm device control means 12 making the device 8 sound when the detection means 6 detects that the means 4 is detached. Thus, the device 8 sounds when the means 4 is detached from the device main body so as to house special paper in the means 4 for the purpose of counterfeiting paper money, so that the unauthorized copying is easily prevented even when the device 1 is used by many unspecified users. Even in the case of detaching the means 4 for the prankish purpose, the device 8 sounds in the same manner, so that pranking is surely prevented. |
