Patent ID: 7548715

Claim:
A container for a toner cartridge, the container comprising: an elongated hollow main body defining a central axis, the main body having a rear end and a front end with an opening; wherein the improvement is characterized in that the main body includes a first section near the rear end, a second section near the front end, a connecting section between the first section and the second section, and a longitudinal rib protruding inwardly from an inner circumference of the main body and extending from the first section to the second section via the connecting section; wherein the first section is provided at the inner circumference with a first guiding surface defining with the central axis a distance (L 1 ) gradually increasing toward the opening, the second section is provided at the inner circumference with a second guiding surface defining with the central axis a distance (L 2 ) gradually increasing toward the opening, the longitudinal rib has a third guiding surface facing the central axis and defining with the central axis a distance (L 3 ), and the inner circumference at the connecting section defines with the central axis a distance (L 4 ) that is longer than the distance (L 3 ), which is defined between the third guiding surface and the central axis, at any cross section of the connecting section; wherein the distance (L 4 ) between the inner circumference at the connecting section and the central axis is longer than the distance (L 2 ) between the second guiding surface and the central axis.