Abstract: An image reading device capable of preventing, by increasing the quantity of light at the center or bound portion of a spread book document, the quantity of light from becoming short and preventing density from becoming irregular due to the deviation of a focus. At and around the center of a spread book document where the document is bound, the quantity of light for illumination or the amplification gain of image data read from the document is increased. A plurality of fluorescent lamps illuminate the surface of the document at the upstream side and downstream side with respect to an intended scanning direction. When the edge of the document is to be detected, only one of the lamps is turned on to enhance the stripe pattern representative of the stepped edge portion of the document.

Abstract: An image reading device capable of preventing, by increasing the quantity of light at the center or bound portion of a spread book document, the quantity of light from becoming short and preventing density from becoming irregular due to the deviation of a focus. At and around the center of a spread book document where the document is bound, the quantity of light for illumination or the amplification gain of image data read from the document is increased. A plurality of fluorescent lamps illuminate the surface of the document at the upstream side and downstream side with respect to an intended scanning direction. When the edge of the document is to be detected, only one of the lamps is turned on to enhance the stripe pattern representative of the stepped edge portion of the document.

Abstract: An image reader capable of determining whether or not a book document to be copied needs royalty by the recognition of a book document and counting operation of a copying system. When a book document to be copied needs royalty, the number of times that images of the document are scanned or the number of times that the resulting image data are outputted is counted. While the count is stored, the royalty of the book document copied is managed on the basis of the count. The image reader can also read a ID code formed on the book, and can control the counting operation based on the detected book ID.

Abstract: A miniature and reliable device capable of reading a book document while turning the pages thereof. A book document is laid on a document table in a spread position face up. The document table is pressed upward while a scanning unit is restricted in movement in the up-and-down direction. The scanning unit, therefore, receives the surface of the book document pressed upward.

Abstract: In an image forming apparatus capable of reading a book document while turning over pages of the book, image data representative of two spread pages of a book document are stored in a frame memory. Among the image data, image data matching the front of a sheet are read out of the frame memory first and then output on the front of a fresh sheet. Then, an image is formed on the rear of a sheet refed from a duplex copy tray or refeed tray. Alternatively, an arrangement may be made such that, among two pages of image data, the image data read last are out of the frame memory first and then output on the front of a fresh sheet, and then an image is formed on the rear of a sheet refed from the refeed tray.

Abstract: A sheet feed device incorporated in a copier, facsimile transceiver, printer or similar image forming apparatus and capable of automatically removing a wrapping from a sheet pack inserted in the apparatus and then feeding sheets one by one.

Abstract: An image reader for reading a book document laid on a document table in a spread position by optically scanning the surface of the document. The edge of the document on the side where scanning for reading the document starts, the position of an image on the document, the size of the document, the edge of the document on the side where the leaf of the document begins to be turned over and so forth are detected on the basis of data derived from the optical scanning of the surface of the document.