For i280, 3590C and i600/i1800 (without image addressing) Series Scanners
The minimum overall length of the patch bars is 0.75 inches (19 mm).
Patch Positioning
Horizontal and vertical placement of the patch code is critical for proper operation. If the patch code is placed improperly on the document, the scanner may fail to read the patch.
•Patches should appear with the bars perpen- dicular to the lead edge of the document (fed into the transport first).
•Any other
•Patch codes must be at least 0.25 inches (6 mm) from the left and right edge of the document and must appear at least 0.5 inches (12.7 mm) from the lead edge of the document.
•The Patch Reading Area ends 2.0 inches from the lead edge of the document. At least 0.75 inches of the patch code must appear within the Patch Reading Area.
For All Scanners
Printing specifications
A patch code is a parallel pattern of bars (black, low reflectance) and spaces (clear, high reflectance).
The ink used to print the black bars must be
The bond paper that forms the spaces must be white or a light pastel color that reflects at least 65% of the light source.
This package contains several pages of camera- ready patch codes. These copies adhere to the specifications provided and may be used by a printer when creating patch documents.
Two types of
•
•
Reliability requirements
•Print the patch code only on the top page of
•If
•Avoid photocopying patches. Photocopiers tend to increase the size of the black bars while simultaneously reducing the white space, thus altering the print specifications.
•Print patch codes with
NOTES: Ink which is used to print bar codes typically has a high carbon content.
•Avoid printing patches on glossy paper. Glare can cause the patch to be misread.