Image reading apparatus and image forming apparatus

An image reading apparatus includes a reading glass, a second guide member, and a control section. The reading glass and the second guide member together form a document feed path. The second guide member includes a white reference plate. The control section performs, when it is determined that shad...

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Bibliographic Details
Main Authors FUKUTOME SHOHICHI, NAKANISHI KENJI, IMOTO MASAHIRO, OGASAWARA HIRONORI, YOSHIMOTO MITSUHARU, SUTO YASUHIRO
Format Patent
LanguageEnglish
Published 31.12.2013
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:An image reading apparatus includes a reading glass, a second guide member, and a control section. The reading glass and the second guide member together form a document feed path. The second guide member includes a white reference plate. The control section performs, when it is determined that shading correction image data is affected by a stain, a stain location determination of whether the stain is attached to the reading glass or the second guide member according to a tone value variation in the portion of the shading correction image data that corresponds to the stain edge, the variation being along a predetermined distance in the main scanning direction.
Bibliography:Application Number: US201113009011