Re: printing QR-codes on labels with 300dpi label printers with LaTeX

On 10/03/2024 10:51, jeremy ardley wrote: I have far less problems with the QR code (in my case data_matrix code) than with the barcode. The pixel elements of the QR code are much larger than the lines in a barcode so there is much less chance for pixel ambiguity. From your earlier message

Re: printing QR-codes on labels with 300dpi label printers with LaTeX

On 10/3/24 11:21, Max Nikulin wrote: Is the QR image a raster one? I am unsure concerning its printer dots per QR pixel ratio. Let's take e.g. 4 as a value inconvenient for direct scaling from 300dpi to 203dpi. I expect that upscaling it by 3 and downscaling the result by 4 with disabled sm

Re: printing QR-codes on labels with 300dpi label printers with LaTeX

On 10/03/2024 03:48, jeremy ardley wrote: Standard thermal label printers are 203DPI (8 dots per mm). Thanks, this number suits better to my expectation. I just trusted hw earlier. I have asked the postal service to generate labels at 203dpi which will print just fine at 600 dpi and so wor

Re: printing QR-codes on labels with 300dpi label printers with LaTeX

On 10/03/2024 04:41, hw wrote: \psbarcode{textblah foo}{height=0.6 width=0.6 eclevel=L}{qrcode} That works for 600dpi laser printers. When you print the QR-code with a 300dpi label printer you can't reliably scan it, not even when you make the QR-code 1x1" in size. Perhaps that's not a reasona

Re: printing QR-codes on labels with 300dpi label printers with LaTeX

On 10/3/24 05:41, hw wrote: The QR-codes are sharp and easily scanable when printed in 600dpi. With the label printer you can't really tell if they're sharp or not. As  mentioned in my previous post, thermal label printers are 203dpi, *not the 300 that the OP quoted.* you can read the OP s

Re: printing QR-codes on labels with 300dpi label printers with LaTeX

On Sat, 2024-03-09 at 23:20 +0700, Max Nikulin wrote: > On 09/03/2024 19:08, hw wrote: > > On Fri, 2024-03-08 at 23:21 +0700, Max Nikulin wrote: > > > On 08/03/2024 12:35, hw wrote: > > > > On Thu, 2024-03-07 at 23:15 -0500, Jeffrey Walton wrote: > > > > > > > > > > I have a USB thermal printer fo

Re: printing QR-codes on labels with 300dpi label printers with LaTeX

On 10/3/24 00:20, Max Nikulin wrote: Looking at a QR code likely having ~75 pixels per inch I find it unreasonably small for delivery labels. I am in doubts if its redundancy is high enough to reliably recognize it if it would be scratched during delivery. Another limitation may be stabilit

Re: very poor nfs performance

On Sat, 2024-03-09 at 13:54 +0100, hw wrote: > > NFS can be hard on network card drivers > IPv6 may be faster than IPv4 > the network cable might suck > the switch might suck or block stuff As iperf and other network protocols were confirmed to be fast by the OP it is very unlikely that it is a s

Re: printing QR-codes on labels with 300dpi label printers with LaTeX

On 09/03/2024 19:08, hw wrote: On Fri, 2024-03-08 at 23:21 +0700, Max Nikulin wrote: On 08/03/2024 12:35, hw wrote: On Thu, 2024-03-07 at 23:15 -0500, Jeffrey Walton wrote: I have a USB thermal printer for the shipping labels, . This printer has

Re: very poor nfs performance

On Thu, 2024-03-07 at 10:13 +0100, Stefan K wrote: > Hello guys, > > I hope someone can help me with my problem. > Our NFS performance ist very bad, like ~20MB/s, mountoption looks like that: Reading or writing, or both? Try testing with files on a different volume. > rw,relatime,sync,vers=4.2,

printing QR-codes on labels with 300dpi label printers with LaTeX (was: libbusiness-us-usps-webtools-perl and USPS Ground Advantage shipping)

On Fri, 2024-03-08 at 23:21 +0700, Max Nikulin wrote: > On 08/03/2024 12:35, hw wrote: > > On Thu, 2024-03-07 at 23:15 -0500, Jeffrey Walton wrote: > > > > > > I have a USB thermal printer for the shipping labels, > > > . > > > > This printer has only