Transport device and image forming apparatus that can align a transfer belt

摘要

A transport device includes a driving roller that drives an endless belt so that the belt rotates, a transfer roller that presses the belt from an inner side of the belt toward an image carrier, which carries a toner image, and transfers the toner image onto the belt, a first stretching roller that stretches the belt, a second stretching roller that stretches the belt, wherein the second stretching roller is disposed at a position between the driving roller and the first stretching roller, and wherein the second stretching roller is disposed on a side on which the transfer roller is in contact with the belt, and an adjusting mechanism that adjusts a direction of a rotary shaft of the second stretching roller.

主权项

1. A transport device comprising:
a driving roller configured to drive an endless belt so that the belt rotates; a transfer roller configured to press the belt from an inner side of the belt toward an image carrier carrying a toner image,
wherein the transfer roller is configured to transfer the toner image onto the belt; a first stretching roller configured to stretch the belt; a second stretching roller configured to stretch the belt,
wherein the second stretching roller is disposed at a position between the driving roller and the first stretching roller, andwherein the second stretching roller is disposed on a side on which the transfer roller is configured to contact the belt; and an adjusting mechanism configured to adjust a direction of a rotary shaft of the second stretching roller, wherein the transfer roller is configured to transfer the toner image at a position further downstream than the driving roller and further upstream than the first stretching roller in a movement direction of the belt, wherein the second stretching roller is configured to stretch the belt at a position further downstream than the driving roller and further upstream than the transfer roller in the movement direction of the belt, wherein the driving roller, the second stretching roller, the transfer roller and the first stretching roller are arranged in order in the movement direction of the belt, and wherein both the second stretching roller and the driving roller are, when viewed along a rotational axis of the transfer roller, disposed on a same side of a normal line extending through the rotational axis of the transfer roller and extending normal to an outer side of the belt.