Waste toner collecting device and image forming apparatus loaded therewith

An image forming apparatus loaded with a waste toner collecting device,

• wherein the waste toner collecting device comprises:
• a waste toner collecting bag being stretchable;
• a toner conveyance part fitted with the waste toner collecting bag, and conveying a waste toner and also discharging the waste toner toward the waste toner collecting bag;
• and
• a holding member for the waste toner collecting bag, the holding member being attached to a terminal end part of the waste toner collecting bag, being capable of being fitted to the toner conveyance part by holding the waste toner collecting bag between the holding member and the toner conveyance part while folding the waste toner collecting bag more compactly than in a used state, and being attachable to and removable from the toner conveyance part.