Epson Tm-t20 ii network shared printer problem

Hi all!

I have the Tm-t20 ii connected to network and two Linux Cash Registers are printing to its IP using JetDirect / RAW driver.

No problem if I use only one cash register but if I use two things get weird:

if I print from the 1st cash register no problems at all: as soon as I print from the 2nd the 2nd won't print.

After a couple of minutes it will print the material I've sent to print before.

As soon as this happens the 1st stops printing.

If I print from it nothing is printed and after 2 minutes or so they switch roles.

What can it be?

What can I try to fix?

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You need to enable "virtual disk" in HP printer to make it queue documents, or add some server like raspberry pi that can queue print jobs.
wyliecoyoteukIT directorCommented:
First try :

In the printer properties, advanced tab, set Spooling to "start printing after the last page has spooled"
You might also have to untick bidirectional support in the ports tab.
CUPS on linux does that by default... Problem is that "print server" is not able to accept two spoolers at once.
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wyliecoyoteukIT directorCommented:
You should be using the Epson driver.
The epson setting utility should allow you to edit settings, increase the buffer size to maximum. (45k)
wyliecoyoteukIT directorCommented:
Oops,missed the "linux" bit.
Essentially it sounds as though the printserver on the printer is getting locked by one or the other cash register.
using the epson utility change the buffer size and timeout values.
You might get better results using LPR as opposed to RAW.

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ltpittAuthor Commented:
Thanks you all for the help guys!

I solved setting the "reset TCP IP stack" in Epson software to 5 seconds.
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