Patent ID: 8091723

Claim:
A lid to selectively plug or unplug a discharge mouth of a toner or developer container mountable to an image forming apparatus for replenishing a toner or developer container, comprising: (a) a body member having a bottom portion and a sidewall portion extending continuously and conically from the bottom portion to define a bowl-type housing, wherein the bottom portion has an inner surface and an outer surface and defines an opening, and the sidewall portion has an inner surface and an outer surface; (b) a lug member having a first end portion and a second end portion defining a body portion therebetween, and a ring shaped engagement plate integratedly formed on the body portion between the first end portion and the second end portion and extending radially and outwardly from the body portion, wherein the first end portion comprises a conical tip portion, a conical engagement portion, and a step portion joining the conical tip portion and the conical engagement portion, and wherein the ring shaped engagement plate has a diameter greater than that of any one of the first end portion, the second end portion and the body portion; and (c) a base member having a base portion having a first surface and a second, opposite surface, a body portion protruding away from the second surface and defining an opening with the base portion, a conical tip portion extending from the body portion, and a plurality of grooves formed on the conical tip portion, the conical tip portion corresponding to the first end portion of the lug member, wherein the body portion of the lug member is sized to be received into the opening of the bottom portion of the body member and into the opening of the base member to engage the body member with the base member; and wherein the base portion of the base member is formed with a resilient material such that when the body portion of the lug member is received into the opening of the bottom portion of the body member and into the opening of the base member, which is in communication with the opening of the bottom portion of the body member, the first end portion of the lug member snaggingly fits through the opening of the base member, and the conical tip portion of the base member is received at the step portion of the first end portion of the lug member, the ring shaped engagement plate of the lug member is in contact with the bottom portion of the body member, which in turn, is in contact with the base portion of the base member, and the second end portion of the lug member is accommodated in the bowl-type housing of the body member.