Printing prefixed by '00' on non reverse styling and '01' prefix on reversed styling

[andrey-ushakov]

Printing prefixed by '00' on non reverse styling and '01' prefix on reversed styling

[FrankSantoso]

Yes, it's a shame my printer only supports a minuscule subset of ESC/POS.

At this point, i'm trying to use method channel from the epson sdk page. I'll figure it out and if i succeed, i'll get back to you, in the mean time i'll close this issue.

Thanks for the help, cheers!

[andrey-ushakov]

Hi,
Probably your printer doesn't implement one of the POS/ESC commands. I suspect the reverse styling command.
In the Ticket class (ticket.dart), try to remove / comment out the line 78:
bytes += styles.reverse ? cReverseOn.codeUnits : cReverseOff.codeUnits;

Does it resolve the issue?

[FrankSantoso]

Hey thanks for the quick response,

I'm afraid the issue still persists, but instead of showing 00, it now only shows single padded zero (0).

Any other idea i can probably investigate?

Edit: Which brand of printer manufacturer / vendor and its type you prefer / often use?

[andrey-ushakov]

Hi,

I've used Xprinter as a WiFi printer and a cheap noname bluetooth printer.

It seems that your printer only supports a subset of POS/ESC commands. I would print a test ticket using the code from example.dart or just try to print using all the text styles (underlined, bold, text align etc) to find which commands/styles are not supported. You can compare your ticket with the one from README.me.

After that, you can remove/comment out unsupported commands just like you did for cReverseOn/cReverseOff command.

I hope this helps! :)

[andrey-ushakov]

Hi @FrankSantoso

I've recently updated the library. It may fix your issue.
May I ask you to print a few test tickets using your printers to check if it helps, please?