Patent ID: 8654409

Claim:
An image scanning apparatus comprising: an image scanning unit that includes: a plurality of light emitting elements; and a light receiving portion receiving light emitted from the plurality of light emitting elements and reflected on a document, wherein the image scanning unit scans an image on the document; a light quantity information acquiring unit that acquires information about a first quantity of light received by the light receiving portion as initial light quantity information while causing the plurality of light emitting elements to irradiate a reference member with light; a correction unit that corrects the image scanned by the image scanning unit, on the basis of the light quantity information acquired by the light quantity information acquiring unit; and an abnormality detecting unit that detects abnormality of the light emitting elements, wherein, in response to the abnormality detecting unit detecting abnormality of the light emitting elements, the light quantity information acquiring unit acquires information about a second quantity of light received by the light receiving portion as new light quantity information while causing the plurality of light emitting elements to irradiate the reference member with light, and wherein the correction unit corrects the image scanned by light emitted from the light emitting elements of which the abnormality is detected, using the new light quantity information corresponding to the light emitting elements of which the abnormality is detected, in response to the abnormality of the light emitting elements being detected by the abnormality detecting unit.