printing to 2 printers at once

[tubbers]

I have two parallel cards in my pc. I have a Zebra P310 Card printer connected to the original parallel card and a Epson TM-U220 Receipt printer connected to a second PCI parallel card. When I am printing on the card printer for instance and then go to ring a item up and print a receipt, the receipt printer feeds a lot of paper and then prints and feeds a lot and so on. When it is printing sometimes it prints what is printing on the card and then some of the propper information as well.

Is there a way you can make it where there is a delay if one printer is printing or where both printers can print at the same time without interference?

I have also networked the card printer through a print server and I get the same results when trying the above. So it is not so much the parallel cards but I think they way the ports might be configured. Can someone help?

 

[tf1]

This is a very tricky problem. The basic setup should be one card is set as LTP1 and the other as LTP2 and the applications should be set to spool and not print direct to the printers. Each LTP should be using a different interrupt and timing.

However, knowing nothing about your computer (or the applications), it may be a legacy PCI problem where poorly implemented PCI slots on the motherboard are not correctly sharing IRQs.

Would you clarify the last paragraph? Are you saying that if the card printer is set to print over the network whilst the receipt printer is connected to the local LTP1 port, the problem is still the same? If that is the case, then it is an application problem.

Regards: tf1