Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 9, 2011
Patent Application Number
11917205
Date Filed
May 18, 2006
Patent Primary Examiner
Patent abstract
An image reading apparatus includes an illuminating optical system having light sources arranged in a line and a light guide member guiding rays of light from the light sources to illuminate a document which passes through a document reading position near a light emergent surface of the light guide member. An image reading optical system includes a rod lens array to read light passing through the document, and a cylindrical lens array in the light emergent surface of the light guide member. Ridge lines running along a subscanning direction on the light guide member are aligned in a scanning direction.
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