Patent ID: 8854708

Claim:
A sensing device comprising: a sensing section having an illuminating section that illuminates light toward a conveying path direction in which a recording medium is conveyed, and a light-receiving section that receives reflected light of light illuminated from the illuminating section, the sensing section sensing an image on the recording medium that is conveyed on the conveying path; a housing that accommodates the illuminating section; a covering member, that is removably attached to the housing, having a transmitting member through which the light illuminated from the illuminating section is transmitted, the covering member covering the housing; and a setting section disposed at an opposite side to a housing side with respect to the covering member, the setting section being removably attached to the housing, and having a setting surface that sets a position at which the recording medium reflects light, wherein, at a positioning portion of the setting section, the covering member is positioned at least in a direction perpendicular to the setting surface.