Patent ID: 8325392
Filing Date: 2012-12-04
Classification: H04N

Abstract:
1. An image reading device comprising: an illumination portion that irradiates light onto a subject, wherein the illumination portion comprises a plurality of luminescence portions disposed at predetermined intervals in a main scanning direction and a diffuser plate disposed between the subject and the plurality of luminescence portions for diffusing the light emitted by the plurality of luminescence portions; at least one mirror that forms a light path by reflecting a luminous flux from the subject; 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 subject on basis of image formation by the imaging lens; wherein each of the plurality of luminescence portions and the diffuser plate is attached to an attaching member that is integrally configured in a state maintaining a positional relationship where the light from the plurality of luminescence portions is substantially uniform in the main scanning direction, and wherein the attaching member has formed therein: a mounting portion that is disposed on a side to the subject and mounts the diffuser plate; and an opening portion that is formed on the mounting portion so as to extend in the main scanning direction, and through which light incident on the diffusing plate passes.