An image reading apparatus in which extended image reading time is prevented when high quality image data is obtained, which image data is corrected by invisible light such as infrared light which is transmitted through an original. The design enables high vehicle fineness ratios, low-observable features, and enhances ramjet operability limits. The cutter is arranged and configured to protrude from fence support through cutter slot to make a plunge cut into a surface of a workpiece when the contact surface is pressed against the surface and the cutter is plunged into the workpiece by pushing on a rearward handle portion of the tool. , such that in response, the source may transmit the particular future message on the changed path in reverse. The light emission area and the light detection area are concentric to each other which enables the light detection area to have close proximity to the light emission area.