Patent ID: 7468819
Filing Date: 2008-12-23
Classification: H04N

Abstract:
1. An image reading apparatus including: a transparent original table for placing a transmitting original thereon; an image reading unit for reading an image of the transmitting original through said transparent original table; a transmitting original holder having a through-hole for positioning the transmitting original relative to said transparent original table; an illuminating unit adapted for pressing the transmitted original positioned by the through-hole of said transmitting original holder, a plane light source arranged in said illuminating unit, for illuminating the transmitting original, a fitting portion, arranged on said illuminating unit, for fitting in a depression of the transmitting original holder so as to position said illuminating unit in said transmitting original holder, and a protruding portion arranged on said illuminating unit so that, when said illuminating unit is positioned in said transmitting original holder, said protruding portion opposes a surface of said transmitting original holder on a side opposite from said transparent original table, wherein said protruding portion is configured so that, when said illuminating unit is inserted into the through-hole at an angle such that said plane light source is not parallel to said transmitting original holder, the protruding portion contacts the surface of said transmitting original holder.