Code 128 Barcode Width in Java

[candysmith]

Hi, all,
The width of Code 128 generated in Java application is much larger than the printing space I have on the label. Even setting the bar width to 1 pixel also cannot meet my requirement. I tried to scale the Code 128 barcode image but no result happened. Is there any way to further reduce the width of the Code 128 barcode image in my Java application?

[David_3]

It comes down to the resolution of your printer. If you set the bar width to be 1 pixel and produce the barcode too large, then you scan try and scale. But the generated barcode image will be not clear. A printer needs at least 300 dpi barcode.

[glitch]

How did you print the barcode image?

If you are printing a raster image, scaling will happen otherwise you should get a small barcode on a printer - because printer resolution is usually much higher than screen. If you print pixel-to-pixel, scaling 5 times (96 dpi -> 600 dpi) give you approximately the same size as laid out at screen.

For highest quality possible, consider using code128 fonts instead: http://www.morovia.com/fonts/code128/.

[candysmith]

It comes down to the resolution of your printer. If you set the bar width to be 1 pixel and produce the barcode too large, then you scan try and scale. But the generated barcode image will be not clear. A printer needs at least 300 dpi barcode.

So you mean to call barcode.setResolution(300), that is ok? I just have a try and it really reduce the barcode width. The generated barcode image seems merging some bars on the screen, but is clearly separated on zooming. But I don’t know what the result on the printer and scanner is?