Image reading device and image forming device

An image reading device comprising:

• an illumination portion, which irradiates light onto an original, including a plurality of luminescence portions disposed at predetermined intervals in a main scanning direction, a reflective portion that reflects light, which is a portion of the light emitted by the plurality of luminescence portions and not directly irradiated onto the original, so as to irradiate the light onto the original, and a diffuser plate that is disposed between the plurality of luminescence portions and the original and between the reflective portion and the original, and causes light directly incident from the plurality of luminescence portions, which is a portion of light emitted from the plurality of luminescence portions, and light from the reflective portion, to diffuse;
• at least one mirror that forms a light path by reflecting a luminous flux from the original;
• an imaging lens that forms an image from the luminous flux reflected by the at least one mirror;
• and
• a reading portion that is disposed in an imaging position of the imaging lens, and reads an image of the original based on image formation by the imaging lens.

An image forming device comprising:

• an image reading device including:
• an illumination portion, which irradiates light onto an original, including a plurality of luminescence portions disposed at predetermined intervals in a main scanning direction, a diffuser plate that is disposed between the original and the plurality of luminescence portions and causes the light emitted by the plurality of luminescence portions to diffuse, and a reflective portion that reflects light, which is a portion of the light diffused by the diffuser plate and not directly irradiated onto the original, so as to irradiate the light onto the original,
• at least one mirror that forms a light path by reflecting a luminous flux from the original,
• an imaging lens that forms an image from the luminous flux reflected by the at least one mirror, and
• a reading portion that is disposed in an imaging position of the imaging lens, and reads an image of the original based on image formation by the imaging lens;
• an image supporting body on which an electrostatic latent image is formed on a surface thereof based on image information relating to an image of the original that is read by the image reading device;
• a developing unit that develops a toner image on the electrostatic latent image formed on the image supporting body;
• a transfer portion that directly or indirectly transfers the toner image formed on the image supporting body to a predetermined paper;
• and
• a fixing portion that fixes the toner image transferred to the predetermined paper by the transfer portion.