An image scanner includes a primary conveyance roller to convey an original bearing an image in an original conveyance direction and an image reader disposed downstream from the primary conveyance roller in the original conveyance direction to read the image on the original. A moving original reading portion is disposed opposite the image reader. The image reader reads the image on the original through the moving original reading portion while the original moves over the moving original reading portion. A slope is disposed downstream from the moving original reading portion in the original conveyance direction. A spacer is interposed between the moving original reading portion and the slope in the original conveyance direction. A secondary conveyance roller has an original contact point to come into contact with the original. The original contact point is disposed opposite the spacer with an interval therebetween.