JP2008151850A5 - - Google Patents

Claims (9)

A paper discharge tray cover that opens and closes a side surface of the image forming apparatus main body is rotatably provided, and a paper discharge device for placing the fixed sheet discharged on the upper surface of the paper discharge tray cover in an opened state is provided. In the provided image forming apparatus,
A sheet holding portion for holding a sheet is formed on the inner surface of the paper discharge tray cover which is an upper surface in an open state, and a rotating fan is mounted facing an exhaust port provided by opening a part of the sheet holding portion. An image forming apparatus that sucks and holds a sheet on the sheet holding portion by rotation of the rotary fan.   The sheet holding portion is formed in a concave shape in which the central portion in the direction orthogonal to the sheet discharge direction is lower than both end portions, and the exhaust port and the rotary fan are attached to the lower central portion and discharged. The image forming apparatus according to claim 1, wherein the central portion of the sheet in the width direction is attracted to the central portion of the sheet holding portion, and both end portions in the width direction are warped upward and held.   3. The image forming apparatus according to claim 2, wherein the sheet holding portion is formed with both ends and a central portion with streak-like ribs to reduce sheet conveyance resistance during discharge. A paper discharge tray cover that opens and closes the side surface of the image forming apparatus main body is rotatably provided.
In the image forming apparatus in which the sheet discharge tray cover forms a conveyance path for conveying a sheet in a closed state, and in a state in which the sheet discharge tray cover is opened, a fixed sheet discharged onto an upper surface serving as a sheet holding unit is stacked. ,
An image forming apparatus, wherein the discharge cover is provided with a rotating fan. The rotating fan is mounted on the discharge tray cover so as to be movable between a normal posture position and a tilt posture position;
The rotary fan is positioned in a tilted posture position at an angle facing the duplex printing unit conveyance path during the duplex printing operation in the image forming apparatus main body with the discharge tray cover closed, and the sheet being switched back 5. The image according to claim 1, wherein when the sheet discharge tray cover is opened, the discharged sheet is returned to a normal posture position and is discharged. Forming equipment.   4. The image formation according to claim 1, wherein a second rotating fan that sucks a sheet being switched back is attached to a double-sided printing unit conveyance path of the image forming apparatus main body. 5. apparatus. The image forming apparatus according to claim 1, wherein the rotary fan is provided as an exhaust unit that radiates heat generated in the main body of the image forming apparatus. The image forming apparatus according to claim 1, wherein the rotary fan is provided as a cooling unit that sucks outside air to cool the inside of the image forming apparatus main body. 9. The rotary fan according to claim 1 , wherein the rotary fan is turned on / off in conjunction with opening / closing movement of the paper discharge tray cover and switching of image formation on both the front and back sides of the sheet. Image forming apparatus.