Image forming apparatus and image reading apparatus

An image forming apparatus comprising:

• a main apparatus configured to form an image on a sheet;
• and
• an image reading apparatus configured to read an image on an original,
• wherein the main apparatus is provided with
• an image forming unit configured to form the image on the sheet, and
• a discharge tray on which the sheet, on which the image is formed by the image forming unit, is stacked,
• wherein the image reading apparatus is provided with
• a transparent member on which the original is stacked,
• a reading unit configured to read the image of the original stacked on the transparent member,
• a housing configured to support the transparent member and to accommodate the reading unit,
• a sensor disposed on a bottom surface of the housing and configured to detect the original stacked on the transparent member, and
• a cable connected to the sensor,
• wherein a lower surface of the bottom surface is positioned above the discharge tray and forms an upper portion of a discharge space to which the sheet, on which the image is formed by the image forming unit, is discharged,
• wherein in the bottom surface of the housing, a groove portion which is recessed downward inside the housing and protrudes in the discharge space is formed, and
• wherein the cable is arranged to pass through inside the groove portion.