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barcode printing on EPSON dot matrix

Former Member
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Hi,

We are printing barcode on Invoice using EPSON dot martrix. We created a new bar code using New Barcode technology through SE73 and created a ZPDF417 type .We taken a PDF417 symbology in New Barcode Technology.

While using this , the data is printing in Barcode. But while scanning the data is not reading.

The same print taking from HP Laser or HP DeskJet , it is printing and also reading while scanning.

Why i am facing problem with Dotmatrix.

If any suggestion pls give me.

Thanks in Advance,

Pavan.

Accepted Solutions (0)

Answers (3)

Answers (3)

Former Member
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Hi Dear ,

I am also developing barcode using PDF417 symbology .

I am able to print on laser printer but not on dot matrix printer.

Kindly suggest me what parameter data did u used when using PDF417 symbology .

Thanks in Advance

Regards:

Hans

9871111496

Former Member
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I am developing the similar things using code 39 and have the same problem. The printer model I am using is EPSON DFX5000+. I may need to try to use another model with higher resolution.

Could I ask which printer model you are using?

Thanks,

Chan

Former Member
0 Kudos

Hi Pavan,

Dot matrix printers offer the lowest resolution of all available printers. Although dot matrix printer manufacturers claim resolutions as high as 360 dots per inch, the real resolution of most is only 60 dots per inch. Higher resolutions are simulated by overlapping consecutive dots. The reason that the true resolution is only 60 dots per inch is because the width of each dot is approximately 1/60th of an inch (16 mils). In order to print readable bar codes on a dot matrix printer, the Narrow Bar Width must never be less than the width of a printer dot as it is impossible for a dot matrix printer to print a line narrower than the width of a single dot. The larger the value that you choose for the Narrow Bar Width (within the allowable range for a specific symbology), the more readable your bar codes will be.

When you set up the Windows printer driver for your dot matrix printer you should select the highest dot resolution that the printer is capable of. If the driver has a Dithering option, you should also select "Line Art" or the finest dithering resolution that is supported. Some dot matrix drivers also allow you to set the intensity or darkness of the printing. If your printer supports this feature, you should set the intensity to the darkest level supported.

So i think in your case you need to tell the EPSON printer to use a minimum pitch-width in combination with UNI-DIRECTIONAL printing (Uni-directional escape character for EPSON = ESC U).

The pitch-width is something that must be setup standard for the printer (ask the system guys).

The UNI-DIRECTIONAL flag can be send prior (but part of) the actual barcode. The ESC charachter has ASCII value 027.

Most likely with UNI-DIRECTONAL print, your barcode will become readable.

Hope this helps you along.

Regards,

Rob.