Patent ID: 7420716

Claim:
An image reading apparatus comprising: an original base plate on which an original is to be placed; an image pickup means configured to pick up an image of the original; a cabinet having said original base plate at an upper portion thereof and containing said image pickup means; scanning means provided inside of the cabinet, the scanning means including a light source configured to illuminate the original and to focus the image of the original on the image pickup means; an inverter configured to drive said light source so that said light source emits light; driving means configured to drive the scanning means for movement to scan the original; supplying means configured to supply power to the image reading apparatus; and cooling means configured to form a flow path of air to cool an area inside of the image reading apparatus, wherein the driving means and the supplying means are provided at a vicinity of a first side face of the cabinet which is orthogonal to a main scanning direction of the scanning means, the cooling means is provided at a vicinity of the first side face of the cabinet, and the inverter is provided along a second side face, which is provided at an opposite side to the first side face of the cabinet, and is disposed in said flow path of air formed by the cooling means.