Hand Held Products 4410 User Manual

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Hand Held Products 4410 User Manual Manual pdf 22 page image

1 - 18Mask Pattern/MaskingMask Pattern/Masking is a specific part or characteristic of QR Code where aprocess is used to provide a more evenly balanced number of light and darkmodules to reduce the occurrence of arrangements of adjoining modules thatmight interfere with efficient processing of a symbol's image. For additionalinformation, refer to the QR Code symbology, available from AIM GlobalSpecification (www.aimglobal.org).Module ErrorsModule Errors are individual errors within fixed pattern/data areas. Althoughoften benign, Module Errors in the fixed regions of a symbol can signal a faultthat, in some instances, will prevent proper decoding. They can generally becorrected by using a larger X-dimension and/or cleaning up the print process toeliminate stray ink, voids, and other causes of inconsistency in the print.Print Growth (Horizontal and Vertical)Print Growth is a measure of the growth or shrinkage of the bar widths (2Dstacked) or element/module (2D matrix) width and/or height. A low Print Growthgrade indicates print conditions that expand or shrink the apparent size of thedark bars or elements, which can cause them to optically disappear. In 2D matrixsymbols, if the growth/shrinkage in one direction is larger than the other, this canindicate excessive drag in the direction of label travel. Potential areas ofcorrection include adjusting the print process (e.g., ink flow, transfer heat, printspeed), adjusting the original bar code symbol graphic or pattern (throughtechniques such as undercutting), or by making the symbol larger.Row HeightRow Height is an approximate measure of the average height of the elements ina row, which indicates growth or shrinkage of the element widths. In 2D stackedsymbologies, row heights of less than the recommended height can impedehandheld scanning. This can be corrected by graphically stretching the symbol.SymbologySymbology is the symbology type that has been tested. A symbology is astandard means of representing data in a bar code form. Each symbologyspecification sets out its particular rules of composition or data architecture.