Patent ID: 9488959
Filing Date: 2016-11-08
CPC Classification: G03G

Claim Text:
1. An image forming apparatus, comprising: a frame member; an intermediate transfer unit that includes a drive roller and a tension roller supported by the frame member and an intermediate transfer belt stretching around the drive roller and the tension roller; a plurality of image forming units located at a lower side of the intermediate transfer unit and located along a running direction of the intermediate transfer belt; and a plurality of toner containers located at an upper side of the intermediate transfer belt corresponding to the respective image forming units to supply the respective image forming units with toners, wherein the frame member defines a plurality of concave portions to accommodate respective lower end portions of the toner containers, and includes an upper frame portion located to cover a top surface of the intermediate transfer belt, each of the plurality of concave portions has a pair of sidewall portions and a bottom wall portion connected between lower end portions of the pair of the sidewall portions together, one concave portion among the plurality of the concave portions is defined by one of the pair of sidewall portions, the one of the pair of sidewall portions defining a vent hole, the upper frame portion defines a ventilation path located at an opposite side of the one concave portion with respect to the one of the pair of the sidewall portions, the ventilation path communicating with the one concave portion via the vent hole, and the image forming apparatus further includes a blast fan to discharge air in the ventilation path from the vent hole to a side of the one concave portion.