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Whitespace requirement around barcodes

We are trying to recognize code 128 barcodes on a delivery ticket and are having problems when the barcode is in a box. After playing with the zone being read, we are finding the issue is when the area of the document we are trying to find a barcode in has vertical lines within about a quarter inch on the barcode itself. Is there a prescribed amount of whitespace required around the barcode to expect it read? This seems like it is specific to Code128. I don’t remember ever seeing this with Code39?


Thank you for inquiry.

I will check about the space requirement from the developers. Could you please post a sample image for our analysis with such Code128 barcode, that could not be read?

Document attached.


Thanks for posting the sample image. We will look into it.

<!–[if gte mso 9]>
<m:mathFont m:val=“Cambria Math”/>
<m:brkBin m:val=“before”/>
<m:brkBinSub m:val="–"/>
<m:smallFrac m:val=“off”/>
<m:lMargin m:val=“0”/>
<m:rMargin m:val=“0”/>
<m:defJc m:val=“centerGroup”/>
<m:wrapIndent m:val=“1440”/>
<m:intLim m:val=“subSup”/>
<m:naryLim m:val=“undOvr”/>
<![endif]–><!–[if gte mso 10]>

/* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";}

<![endif]–><span style=“font-size: 12pt; font-family: “Times New Roman”,“serif”;”>According to the specifications, Code128 barcode requires quiet zone of minimum 10
times of X dimension.

The issues you have found earlier (filed as BARCODENET-21997) have been fixed in this update.

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