Patent ID: 8520271
Filing Date: 2013-08-27
Classification: G03G,H04N

Abstract:
1. An image reading apparatus, comprising: a reading portion that reads a transported original through a transparent original reading plate, an illumination portion that has a plurality of light-emitting elements for illuminating the original provided in at least one row in a reading-scanning direction of the reading portion, and that illuminates the original through the original reading plate, a light emission control portion that performs control to selectively turn on or turn off each of the light-emitting elements of the illumination portion, and a foreign matter detection portion that detects foreign matter on a surface of the original reading plate based on output of the reading portion by having the light emission control portion perform control to selectively turn on or turn off each of the light-emitting elements wherein the light emission control portion performs control to selectively turn on or turn off each of the light-emitting elements of the illumination portion so that pairings of a turned-on light-emitting element and a turn-off light-emitting element adjacent to each other are shifted in a row of the light-emitting elements of the illumination portion.