Image forming apparatus

An image forming apparatus, comprising:

• a main body;
• a printing device disposed in the main body, the printing device being configured to form a visible image corresponding to image data on a printing medium;
• a decurl device configured to correct a curl on the printing medium, the decurl device comprising at least a first decurl roller, a second decurl roller rotatably disposed opposite the at least first decurl roller, with each of the first decurl roller and the second decurl roller being rotatably disposed in the decurl device, and at least one corresponding curved member having a predetermined curvature along which the medium travels, the at least one corresponding curved member including a first and a second decurl portion forming a concave decurl path opposite a duplex printing guide device, the printing medium is delivered along the concave decurl path formed between at least the first decurl roller, the second decurl roller, and the first and second decurl portions, the first and the second decurl portions arranged flanking each other, or flanking each other and having at least the first decurl roller therebetween;
• a discharging device configured to discharge the printing medium outside of the main body and to reverse a transport direction of the printing medium when a duplex printing is implemented;
• and
• the duplex printing guide device configured to guide the printing medium away from the decurl device.

An image forming apparatus, comprising:

• a main body;
• a photoconductive medium disposed in the main body;
• a charging device configured to charge the photoconductive medium to a predetermined electrical potential;
• a scanning device configured to scan the charged photoconductive medium with light corresponding to image data to form an electrostatic latent image;
• a developing device configured to form a visible image on the photoconductive medium by supplying developer to the photoconductive medium having the electrostatic latent image;
• a transfer device configured to transfer the visible image from the photoconductive medium to a printing medium;
• a fixing device configured to fix the visible image on the printing medium;
• a decurl device configured to correct a curl on the printing medium, the decurl device comprising at least a first decurl roller, a second decurl roller rotatably disposed opposite the at least first decurl roller, with each of the first decurl roller and the second decurl roller being rotatably disposed in the decurl device, and at least one corresponding curved member having a predetermined curvature along which the medium travels, the at least one corresponding curved member including a first and a second decurl portion forming a concave decurl path opposite a duplex printing guide device, the printing medium is delivered along the concave decurl path formed between at least the first decurl roller and the second decurl roller and the first and second decurl portions, the first and the second decurl portions arranged flanking each other, or flanking each other and having at least the first decurl roller therebetween;
• a discharging device configured to discharge the printing medium to a space outside of the main body and to reverse a transport direction of the printing medium when a duplex printing is implemented;
• and
• the duplex printing guide device disposed between the decurl device and the discharging device, the duplex printing guide device being configured to prevent the printing medium from interacting with the decurl device when the transport direction of the printing medium is reversed for the duplex printing.

An image forming apparatus, comprising:

• a first device configured to fix an image on a printing medium;
• a second device configured to discharge the printing medium to a space outside the image forming apparatus and to reverse a transport direction of the printing medium when a duplex printing is implemented;
• a third device disposed between the first device and the second device, the third device configured to remove at least a portion of a curl of the printing medium as the printing medium moves along a first direction away from the first device and toward the second device, the third device comprising at least a first decurl roller, a second decurl roller rotatably disposed opposite the at least first decurl roller, with each of the first decurl roller and the second decurl roller being rotatably disposed in the decurl device, and at least one corresponding curved member having a predetermined curvature along which the medium travels, the at least one corresponding curved member including a first and a second decurl portion forming a concave decurl path opposite a fourth device, the printing medium is delivered along the concave decurl path formed between at least the first decurl roller, the second decurl roller, and the first and second decurl portions, the first and the second decurl portions arranged flanking each other, or flanking each other and having at least the first decurl roller therebetween;
• and
• the fourth device configured to guide the printing medium away from the third device when the printing medium moves along a second direction away from the second device.