Paper feeding device and image forming apparatus having the same

An image forming apparatus comprising:

• a body;
• a paper feeding tray pivotally rotatably coupled to the body so as to be open with respect to the body or closed with respect to the body;
• a rotating shaft to be rotated by a drive source installed in the body;
• an upper paper feeding frame to be rotated about the rotating shaft in connection with opening and closing operations of the paper feeding tray;
• and
• a pickup unit to be rotated about the rotating shaft in connection with the upper paper feeding frame so as to pick up printing media stacked on the paper feeding tray when the paper feeding tray is in the open position.

An image forming apparatus comprising:

• a body having a rotating shaft to be rotated by a drive source installed in the body;
• a paper feeding tray pivotally rotatably coupled to the body so as to be moved between a standby position to be closed with respect to the body and a paper feeding position to be open with respect to the body for paper feeding;
• an upper paper feeding pivotally rotatable about the rotating shaft;
• a pickup unit having a first roller coupled to the rotating shaft, a second roller spaced apart from the first roller so as to be rotated in linkage with the first roller, and a pickup housing to rotatably support the second roller, the pickup housing being pivotally rotatable about the rotating shaft;
• and
• a binding device to bind the paper feeding tray and the upper paper feeding frame to each other so as to pivotally rotate the upper paper feeding frame in connection with open and closed positions of the paper feeding tray,
• wherein the upper paper feeding frame is located in the body when the paper feeding tray is at the standby position, and is partially exposed to the outside of the body when the paper feeding tray is at the paper feeding position.

An image forming apparatus to form an image on a printing medium, comprising:

• a body to define an outside shape of the image forming apparatus;
• a tray rotatable between an open position to expose an opening into the body to receive the printing medium into the body, and a closed position to close the opening into the body;
• and
• a pickup unit having a first end connected to a shaft inside the body and a second end including a pickup roller to revolve around the shaft, such that the second end is located inside the body when the tray is in the closed position and the second end is located outside the body and the pickup roller is located opposite the tray when the tray is in the open position.

A paper feeding device of an image forming apparatus, comprising:

• a feeding tray to feed a printing medium into the image forming apparatus, the feeding tray rotatable between a closed position and an open position;
• and
• a pickup unit comprising:
• a housing having a first end connected to a shaft inside a body of the image forming apparatus and a second end to rotate around the shaft;
• and
• a pickup roller mounted to the second end of the housing to pick up a printing medium from the feeding tray of the image forming apparatus when the feeding tray is in the open position and to be located within the image forming apparatus when the feeding tray is in the closed position.