garbage after sending image?

Hi folks, thanks for an awesome project!

I’m new to thermal printers and I’m having a little trouble. It seems like, after I print an image, I get a bunch of garbage characters printed out the next time I try to do anything.

With 2.2.0 (from pypi), if I send text('\n') after printing an image, I seem to avoid the issue. In master (3.0a6) that doesn’t help.

I get the same problem even if I use a simple program like this, with an ESC/POS data blob captured from an android esc/pos printer app:

from escpos.printer import Usb
import sys

data = sys.stdin.read()
printer = Usb(0x0416, 0x5011, 0, 0x81, 0x01)
printer._raw(data)
printer.close()

The first time it prints fine, but if I run it again, I see a bit of the image shifted to the right, and then the third time, I get part of the image and garbage. The fourth time, the printout works great, and then the pattern repeats. I could swear it seems like the printer is getting confused, as if it’s missing the end of a command or something. Maybe I’m not doing it right?

test.escpos.zip

Device info

Printer: POS-5890K (this one)

python-escpos version: 2.2.0, 3.0a6

python version: 2.7.14

operating system: Ubuntu 18.04.1

[juancarlord]

Thanks the issue was due the printer being very old and not supporting new commands, only old ESC commands were supported by the printer

On Mon, 6 Dec 2021 at 9:54 AM Ismael Ittner @.***> wrote:

My experience:

just put a p.ln() right before p.image(filename) and solved for me… hope it helps someone.

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[angelod1as]

OMG, I think I found out.

Instead of just p.image(image) I did p.image(image, fragment_height=500) (my image is bigger than 500px in height) and IT WORKED.