| 摘要 |
An image reader, detachably attached to an electronic apparatus, which scans and reads an image formed on a surface to be read includes an image reading part that reads the image; and a scan amount detection part that detects a scan amount by the image reading part, the scan amount detection part including a scaler that is arranged oblique to a vertical scanning direction orthogonal to a horizontal scanning direction, and moves along with scanning by the image reading part.
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