IMAGE READER, IMAGE FORMING APPARATUS, CONTROL METHOD OF IMAGE READER, AND CONTROL PROGRAM OF IMAGE READER

摘要

PPROBLEM TO BE SOLVED: To provide an image reader capable of performing suitable control over a reference surface on which image correction is based. PSOLUTION: The image reader includes a CIS (contact image sensor) which reads a document, the reference surface which is provided opposite the CIS and on which image correction (shading correction) is based, and a polygonal pillar having a paper passing surface used to pass paper. The polygonal pillar is rotated by a motor to alternate the reference surface and paper passing surface. The CIS makes a read before motor rotation (S002) and when data which are not hexagonal-pillar's data and outside a predetermined range are acquired (NO at S003), there is a possibility that a document is left, so that a warning is generated and the motor rotation is quit (S006). PCOPYRIGHT: (C)2009,JPO&INPIT