Reading device, output device, and image forming apparatus

A reading device comprising:

• a radiator configured to radiate light;
• a light receiver configured to receive the light reflected from an image capturing target;
• a first optical path on which the light radiated by the radiator is reflected by a first reflection surface to irradiate a surface of the image capturing target in a radiation area so that diffuse reflection light diffusely reflected by the surface of the image capturing target is guided to the light receiver as a read image;
• a second optical path on which the light radiated by the radiator is reflected by a second reflection surface to irradiate the surface of the image capturing target in the radiation area so that regular reflection light regularly reflected by the surface of the image capturing target is guided to the light receiver as a read image;
• and
• a switcher configured to switch the first optical path and the second optical path in a carriage that houses the radiator, the first reflection surface, and the second reflection surface and moves along a sub-scanning direction for image reading,
• wherein the diffuse reflection light of the first optical path and the regular reflection of the second optical path follow the same trajectory after reflecting in the radiation area.