Patent ID: 9239550
Filing Date: 2016-01-19
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: a main body; a belt unit, mounted to and dismounted from said main body along a first direction of said belt unit, including an endless belt, a plurality of rollers including a first and a second roller configured to stretch said belt, a frame configured to support said rollers, a first engaging portion disposed at an end portion of said first roller with respect to a second direction along a longitudinal direction of said rollers and configured to be fixed to said frame and to position said first roller to said main body, a second engaging portion disposed at an end portion of said second roller with respect to the second direction and configured to be movable to said frame with respect to a third direction intersecting both the first direction and the second direction and to position said second roller to said main body, and a third engaging portion disposed in said frame at a region between said first engaging portion and said second engaging portion as viewed in a direction of axes of said first and second rollers and configured to be fixed to said frame; and a guide member configured to guide said belt unit, disposed in said main body at a position corresponding to said first engaging portion and said second engaging portion, including a first engaged portion engaged with said first engaging portion, a second engaged portion engaged with said second engaging portion, and a third engaging portion engaged with said third engaging portion, in a state that said belt unit is mounted to said main body.