Multicolored image forming apparatus for forming multicolored and monochromatic images

A multicolored image forming apparatus comprising:

• a plurality of image forming units arranged in parallel with each other along a direction in which a recording material is conveyed, each of the image forming units having an image holder;
• a transfer material holder cleaning unit for recovering toner remaining on a transfer material holder;
• an auger for conveying toner, which has been recovered by the transfer material holder cleaning unit, into a recovery container;
• and
• a junction/disjunction unit for jointing/disjointing the transfer material holder with/from the image holder when switching over between a monochromatic image forming mode which uses a specific image forming unit and a multicolored image forming mode which uses a plurality of image forming units,
• the junction/disjunction unit including a driving unit for driving the junction/disjunction unit and the auger when switching over between the monochromatic image forming mode and the multicolored image forming mode.