A hollow, cylindrical toner bottle of the present invention discharges toner
stored
therein when mounted to an electrophotographic image forming apparatus in a substantially
horizontal position and then rotated about its axis. The toner bottle is made up
of a mouth including a toner outlet and a cylindrical wall, and a body including
a circumferential wall and a bottom. The mouth is formed by injection molding.
The outer circumference of the toner outlet has circularity of 0.7 mm or below.
