Patent ID: 8712312
Filing Date: 2014-04-29
Classification: G03G

Abstract:
1. A cover opening and closing unit comprising: a cover installed to be opened and closed from a main body; a manual paper feed tray on which sheets of paper are loaded, the manual paper feed tray being installed on the cover to rotate to a closed position and an opened position, said opened position having an open angle with respect to a vertical direction; a link element connecting the cover to the main body; and a connection link having a first end rotatably connected to the link element and a second end slidably connected to a guide rail installed on a side of the manual paper feed tray, the connection link interacting with a rotation of the link element so that, when the cover is opened when the manual paper feed tray is positioned in the opened position, the open angle of the manual paper feed tray is maintained so as to be equal to or less than 90 degrees with respect to a vertical direction.