Image reading apparatus
AssigneeMinolta Co., Ltd.
InventorsKeiichiro Bungo, Toru Matsui
Life of this patent
Estimating the term…
Abstract
An image reading apparatus includes a linear sensor unit for reading the side shape of a document on a document platen and outputting the outcome of the reading as an image data and a detector for detecting a binder based on the presence of a space (a protrusion) in the image data inputted by the linear sensor unit. This apparatus infallibly judges that such an object as a binder, which is unnecessary for image reading, is present in the document.
Claims23
An image reading apparatus comprising:
- a reading unit for reading a side shape of a document placed on a document platen and a document surface of said document and for outputting image data;
- and
- an unnecessary object detector for detecting an unnecessary object relative to said document surface, based on whether said image data, outputted by said reading unit, includes image data representative of a space between said document surface and an object other than said document surface, and based on a position of said space.
An image reading apparatus comprising:
- a reading unit for reading a document surface of a document placed on a document platen, and for outputting image data;
- a detector for detecting a height distribution of said document surface;
- and
- a decision unit for deciding an unnecessary object for reading is present when said height distribution detected by said detector contains at least two intersection points of curved lines.
An image reading apparatus for reading a document of a plurality of sheets bundled with binders passed through punched holes formed in said plurality of sheets, said binders extending above a surface of said document creating a space therebetween, said apparatus comprising:
- a reading unit for reading said document surface, and for outputting image data;
- a binder detector for detecting positions of said binders extending above said document surface in said document;
- and
- an erasing unit for removing from image data, outputted by said reading unit, image data corresponding to said binders extending above said document surface.
An image reading apparatus for reading a document placed on a document platen, said document having a document face and an end, said apparatus comprising:
- a reading unit for reading a shape of the end of the document placed on the document platen and for outputting end shape image data representative of thus read end shape;
- a detector for identifying data representative of a closed space in said end shape image data outputted by said reading unit;
- and
- image data processing means for processing data based on whether said detector identifies said closed space.
An image reading apparatus comprising:
- a reading unit for reading a side shape of a document placed on a document platen and a document surface of said document and for outputting image data;
- a discerning device for discerning a center line of said document, when said document is placed on said document platen;
- and
- an unnecessary object detector for detecting an unnecessary object based on whether said image data, outputted by said reading unit, includes image data representative of a space between said document surface and an object other than said document surface in a proximity of said center line discerned by said discerning device.
Dependencies are inferred from the claim text.