Why is my receipt printer printing gibberish?

After turning my receipt printer on, it prints perfect receipts for the first order. It also lets me print multiple receipts for the first order and they are all fine. For the second and subsequent orders the receipts are gibberish. If I power cycle (off then on) the printer in it will once again print the first order perfectly, but reverts to printing garbage on all subsequent orders.

The printer is a generic thermal printer with usb, serial, ethernet and WiFi interfaces. I am currently using WiFi. The issue exists whether I use an Android tablet or my smartphone. Presumably, I need to send some sort of start up command sequence to the printer in order to intitialise it. 

Has anyone experienced this type of problem or can anyone offer a suggestion as to how I can rectify this issue?


I have the same issue.
Votes 0

It turns out that it was because I had Loyverse set to print in graphic rather than text mode. I initially selected graphic mode as I wanted to print our logo on the receipts. Once Loyverse was set to pint in text mode, the receipts printed ok, but didn't have our logo at the top.

In order to get the logo to print at the top of our receipts, I used a utility program that came with the receipt printer to store our logo in the printers non-volatile memory (NVRAM). Once this was done, I entered the following ESC/POS commands in the Loyverse initial ESC/POS commands field: -


Broken down, these commands do the following:-

1B,61,01 - center justifies the logo on the page

1C,70,01,00 - prints the logo

OA - gives a line feed after the logo so it isn't too close to the other receipt information.

Hope this helps

Same with me. It prints a bunch of gibberish

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