Image forming apparatus having an integral toner supply container and toner storage container

An image forming apparatus comprising:

• developing means for developing with a developing agent a latent image formed on an image carrying body;
• transferring means for transferring the image developed by the developing means to a recorded medium;
• removing means for removing the developing agent remaining on the image carrying body after transfer of the developed image by the transferring means;
• convey means for conveying the developing agent removed by the removing means;
• supply means having a first storage portion with a predetermined capacity for storing the developing agent, said supply means supplying the developing agent from the first storage portion to the developing means;
• storing means having a second storage portion, the capacity of which is less than that of the first storage portion of the supply means and is greater than the value of the product of a non-transfer rate of the transfer means and the capacity of the first storage portion of the supply means, said second storage portion storing the developing agent removed from the image carrying body by the removing means and conveyed by the convey means;
• a first unit having the developing means and the convey means;
• and
• a second unit detachably mountable to the first unit, the second unit having the storing means and the supply means.