The different codes will signal certain events such as a page/section break or a change from single sided to duplex scanning. The patch code was originally created by Kodak to signal document processing applications while reading large documents. A typical use of a patch code is distinguish where one document ends and another begins when a pile of documents are loaded into the sheet-feeder (ADF) of a document scanner. Some scanners (such as the Kodak i800) require the patch code to be printed parallel to the feed-edge, other scanners (such as the Kodak i5000) require the patch code to be perpendicular (at right angles) to the feed-edge. For this reason patch codes are often printed on all four edges of the page. This will vary depending upon the model of scanner used, and the orientation of the page. A patch code needs to be printed in a certain position, usually near the leading edge (feed-edge) of the document. Driver placa base intel grand county d101ggc.Įxactly what action is taken depends upon the design of any given system. The patch code may be recognised by the scanner itself (more usually in the top-end expensive scanners) or by the scanning or processing software or with a TWAIN or ISIS driver. When scanning the document the patch code can be recognised and acted upon. Introduction A patch code is a pattern of parallel, alternating black bars and spaces (a barcode) that is printed on a document. Patch codes are a set of 6 distinct barcode patterns (1, 2, 3, 4, 6 and T) that are typically used as document separators when scanning.
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