Patent ID: 8275303

Claim:
A discharging unit to discharge printing media, comprising: a casing; a discharger disposed in the casing, to discharge the printing media; a storage plate which is disposed in the casing below the discharger, to store the printing media discharged from the discharger; at least one separation preventing wing coupled to the casing, in order to prevent the printing media from being ejected from the storage plate; a shaft having a first end and a second end opposing the first end and rigidly connected to the at least one separation preventing wing, the shaft to rotate in connection with the at least one separation preventing wing such that the at least one separation preventing wing selectively protrudes from the storage plate; and an elastic member to adjust a protrusion level of the separation preventing wing, by rotating the shaft, according to a weight of the stored printing media, wherein at least one opening is formed on the storage plate and the at least one separation preventing wing protrudes and withdraws through the at least one opening, and wherein the elastic member is disposed inside the casing.