Patent attributes
A document feeding and reading unit and an image forming apparatus capable of reducing errors in magnification copying when the change in the diameter of drive motors results from heating. The document feeding and reading unit reads a document image while transporting a document sheet. At least one transport mechanism, including at least one drive roller and driven roller brought into slidable contact with a drive roller, transports the document sheet while holding the document between the drive roller and the driven roller. A detector measures the temperature at a location of the document feeding and reading unit. A controller controls the rotation speed of the drive roller based on temperature information acquired by the temperature detector. The document feeding and reading unit can be suitably incorporated into an image forming apparatus.
