Sheet conveyer and image forming apparatus

An image forming apparatus, comprising:

• a sheet conveyer comprising:
• a conveyer path configured to convey a sheet therein;
• a first path and a second path branched from the conveyer path;
• a flapper movable between a first position, at which the flapper guides the sheet from the conveyer path to the first path, and a second position, at which the flapper guides the sheet from the conveyer path to the second position;
• a pair of pivot-shaft portions located apart from each other in a widthwise direction, the widthwise direction intersecting orthogonally with a conveying direction, the pivot-shaft portions supporting the flapper pivotably;
• a rotation-shaft portion extending in the widthwise direction, the rotation-shaft portion being located between the pair of pivot-shaft portions in the widthwise direction;
• a bearing portion, in which the rotation-shaft portion is rotatably fitted;
• and
• an elastic buffer member located between the rotation-shaft portion and the bearing portion, and
• an image forming device configured to form an image on the sheet,
• wherein one of the rotation-shaft portion and the bearing portion is arranged in the flapper,
• wherein the rotation-shaft portion, the bearing portion, and the elastic buffer member form a supporting section supporting the flapper pivotably, and
• wherein the sheet with the image formed thereon in the image forming device is conveyed in the conveyer path.