Fixing device and image forming apparatus

1. A fixing device comprising:

a device body;

a fixing unit that is disposed on the device body to perform a fixing operation on a recording medium, and includes a removal assistance unit to assist removal of the recording medium;

a pair of decurling units disposed on the device body to correct a curl of the recording medium by holding the recording medium therebetween; and

an open/close unit openably and closeably disposed on the device body to separate, when opened, the removal assistance unit from the fixing unit and one of the decurling units from the other decurling unit,

wherein the open/close unit includes a first support arm and a second support arm that support the removal assistance unit and one of the decurling units to be rotatable about an identical support point, and

wherein the identical support point is disposed on an upstream side in a transport direction of the recording medium and above the fixing unit.

2. The fixing device according to claim 1 ,

wherein, when the open/close unit is closed, the first support arm and the second support arm are fixed in different positions.

3. The fixing device according to claim 2 , wherein the first support arm and the second support arm are supported by the device body to be rotatable about the identical support point.

4. The fixing device according to claim 3 ,

wherein the fixing unit includes a heating rotator rotatably held by a bearing member, and

wherein the first support arm is fixed in position while having a far end of the first support arm hitting against an outer circumferential surface of the bearing member.

5. The fixing device according to claim 2 , wherein the second support arm is fixed in position while having a support shaft that supports one of the decurling units hitting against the device body.

6. The fixing device according to claim 1 ,

wherein the fixing unit, the removal assistance unit, and the pair of decurling units are integrally disposed in the device body, and

wherein the open/close unit is formed from an open/close covering that openably and closeably covers upper portions of the removal assistance unit and the pair of decurling units.

7. An image forming apparatus, comprising:

an image forming unit that forms an image on a recording medium; and

a fixing unit that fixes the image on the recording medium,

wherein the fixing device according to claim 1 serves as the fixing unit.

8. A fixing device comprising:

a device body;

fixing means for performing a fixing operation on a recording medium, the fixing means being disposed on the device body and including removal assistance means for assisting removal of the recording medium using the removal assistance means;

a pair of decurling means for correcting a curl of the recording medium by holding the recording medium therebetween, the decurling means being disposed on the device body; and

open/close means for separating, when opened, the removal assistance means from the fixing means and one of the decurling means from the other decurling means, the open/close means being openably and closeably disposed on the device body,

wherein the open/close means includes a first support unit and a second support unit that support the removal assistance means and one of the decurling means to be rotatable about an identical support point, and

wherein the identical support point is disposed on an upstream side in a transport direction of the recording medium and above the fixing means.