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US 8,570,623 B2Granted
Deep focus image reading system and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorsTakashi Fujii, Hiroshi Kubo, Tatsuaki Nagano, Takeshi Akai, Yasuo Kosuga, Kenichiro Morita
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Abstract
An image reading system reads an image of an original document by conveying the original document through a fixed reading position along a platen glass. The image reading system includes a conveyance device that conveys the original document keeping a prescribed distance from the platen glass at the reading position. The contact glass is arranged outside a depth of focus at the reading position.
Claims19
An image reading system for reading an image of an original document, comprising:
- a feeding device configured to feed an original document toward a reading position;
- and
- a conveyance device configured to convey the original document through the reading position on a platen glass in a scanning process, said conveyance device keeping a prescribed distance between the original document and the platen glass during the scanning process, wherein said conveyance device includes
- a guide belt configured to travel in a prescribed direction with its surface facing the platen glass at the reading position;
- and
- an absorption device configured to absorb the original document to the guide belt;
- and
- wherein said platen glass is arranged outside a depth of focus.
5 more elements
Dependencies are inferred from the claim text.