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Ie11 Causes Barcode To Print In A Non-Scannable Form


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#1 Cantoris

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Posted 29 July 2016 - 02:03 AM

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We have some machines which had IE9 on and were using Seagull drivers to print barcodes to Toshiba B-EP4DL label printers.  Since the PCs have been upgraded to IE11, the printed labels, though they apparently look OK, are unable to be scanned (on an unrelated machine).  Downgrading an affected PC with the printer back to IE9 caused newly-printed labels to be scannable again.

Has anyone seen this phenomenon before?

Thanks!



#2 Ian C - BarTender ninja @ Seagull

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Posted 29 July 2016 - 05:31 AM

How are you generating the barcodes in Internet Explorer in the first place?  Are theses some sort of graphical item, a Windows barcode font, or a driver based barfont?



#3 Cantoris

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Posted 29 July 2016 - 05:49 AM

Thanks for your quick response Ian.  I've forwarded your question to the relevant people and am awaiting a reply.



#4 Cantoris

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Posted 21 August 2016 - 05:34 AM

Apparently the software uses TX Text and Windows fonts.  Toshiba have now been involved and it appears that the barcode is eventually coming through as a bitmap.  Sounds to me as though this is going to come down to some difference in rendering or scaling in IE11 vs IE9 that is being uncovered/exacerbated by the relatively-low DPI (203) of the printer..?



#5 Cantoris

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Posted 31 August 2016 - 06:24 AM

I found the following useful webpage: http://www.idautomation.com/kb/print-quality.html

I've now been shown where the (Code 39) barcodes are configured in a template in the web-app and they were using 10-point.  On increasing this to 12-point, the printed barcodes are now scannable.  Unfortunately they don't work at 6-point.

 

Something must have changed between IE9 and IE11 though  The barcode printed by IE11 does look a little more patchy.  Zero digits keep being interpreted as Zs.  :-(



#6 Cantoris

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Posted 31 August 2016 - 08:50 AM

Final update:  After ticking "Use software rendering instead of GPU rendering" in IE11, it was able to print scannable barcodes once more at 10-point.  We'll be sticking with 12-point though given the advice from the page I linked above..!






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