| abstract |
To provide an image forming apparatus using a toner having inorganic fine particles externally added thereto, wherein a detached ratio R 1 of the inorganic fine particles from the non-transferred toner is from 0% to 20%, a detached ratio R 2 of the inorganic fine particles from toner passed through the collecting unit is from 20% to 80%, and a ratio of the detached ratio R 2 to the detached ratio R 1 , R 2 /R 1 , is 1.5 or more. |