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Barcodes are different sizes when printing to printers with different resolutions

The NarrowBarWidth (x dimension) in our Image Generator, Label Software and barcode components can only be adjusted to values that the printer can support. In the event a value that does not match up with the printer exactly, the component will calculate to the nearest possible x dimension. Because all of the barcode is created from the x dimension, different sized barcodes are sometimes created on printers with different resolutions. Also, changing the x dimension when printing to low resolution thermal printers may not actually have any effect.


02-28-12     3021 day(s) ago    

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Brant

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This is because at 203 DPI, the size of each dot in the printer is in increments of 5 MILS or .013CM (1/203 = .005", 5 MILS or .013CM). Therefore, 10 MILS or 0.026 CM should equal 2 dots on a 203 DPI printer. In our barcode products, the barcode component will round down the measurement given to the nearest pixel and create the entire barcode from that number of pixels. If this were not done, barcodes on the low resolution printers would not be accurate.

To adjust the x dimension and to create the most accurate sizes on printers with different resolutions, set the NarrowBarWidth or x dimension in increments that are a multiple of the size of a dot on the lowest resolution printer. You may use the following chart to set the x dimensions that create barcodes of the same width on 203 DPI and higher resolution printers:

(203 DPI printer dots) (MILS Setting) (CM Setting)
1 5 .013
2 10 .026
3 15 .039
4 20 .052
5 25 .065

Posted 3021 day(s) ago

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