| 摘要 |
A sheet transporting apparatus, whereby the level of a transporting error for a sheet, such as a document or a printing medium, can be appropriately determined and coped with, and an image reading apparatus and an image printing apparatus equipped with this sheet transporting apparatus, are provided. In the image reading apparatus, in order to transport a sheet of a document, the driving amount per unit time (Dx) of a transporting roller is compared with a plurality of different threshold values (Ta, Tb), and the results obtained by comparison are employed to determine whether a transporting error is a service error or an operator error. |
