Patent ID: 7497434

Claim:
A paper-feeding cassette of an image forming apparatus, the paper feeding cassette comprising: a paper stacking plate to stack sheets of paper thereon; a lift unit placed under the paper stacking plate and having a rotating pivot, a driving motor to rotate the rotating pivot to ascend the paper stacking plate, and a connection portion to connect the rotating pivot to the driving motor; and a release unit having a lever unit to separate the connection portion from the rotating pivot to disconnect the driving motor from the rotating pivot to descend the paper stacking plate by its weight and separate the sheets of paper from a pickup roller, wherein the release unit comprises: a release lever installed at a rear plate of a cassette main body to rotate thereon and to disconnect the connection portion from the rotating pivot, an opening lever installed at a front plate of the cassette main body to rotate thereon, and a connection lever to connect the opening lever to the release lever and to rotate the release lever when the opening lever is rotated, and wherein through holes are formed at both sides of the connection lever to indirectly connect the opening lever and the release lever to each other through the connection lever.