METHOD FOR REMOVING REVERSE POLARITY TONER

PURPOSE:To effectively separate and remove the toners electrified to the polarity reverse from the polarity of the toners to be used from the inside of a developer without using devices, such as separating roller and high-voltage power source. CONSTITUTION:The toners 8 having a main electrification polarity are stuck to the recording body part (recording region (a) relating to transfer) desired to be stuck with the toners according to image information and the reverse polarity toners 13 of the polarity opposite from the polarity of the main electrification polarity are stuck to the recording body part (unrecording region (b) not relating to transfer) desired not to be stuck with the toners. Thus, the unnecessary toners 13 electrified to the polarity reverse from the polarity of the toners 8 to be used are removed without using a special additive device provided with a separating function, such as separating roller. The conventional developing devices are usable as they are simply by adding an exposing signal for the unrecorded region to the image information.