| 摘要 |
An toner detection apparatus is described which detects the existence or absence of a developing unit and the residual amount of toner. The apparatus includes a magnet 202 mounted under a developing unit 100. A sensing signal is generated by a sensor unit 208, by detecting up/down movement of the magnet 202. Then, the apparatus generates status messages concerning the existence of the developing unit and the residual amount of toner, in response to the sensing signal. Accordingly, from the status messages, the user may easily check the existence of the developing unit and the residual amount of the toner. <IMAGE> |
