Problem printing to LaserJet (Ubu Srv 7.10)

I will be sharing this printer but thought I would check that I could print from the server.
Plugged in printer, switched on, connected to server. It must get detected and set up automatically because:
lpinfo -v (reports usb://HP/LaserJet%201010 etc)
lpoptions -d Laserjet (to set as default printer)
lpstat -s (reports LaserJet as default, device usb://HP etc)

All good so far.

Now I type:
lp /tmp/test.txt (I also tried lpr /tmp/test.txt and lp -d LaserJet /tmp/test.txt with the same results)

The light flashes on the printer then after about 10 minutes it prints the twenty character file!

I guess the printer is waiting for an EOF - is this right and how can I supply it?

Will this still be a problem when I share the printer using Samba?

Thanks for any help.

 

Are there any errors in your logs?

 

Sorry about delay...holiday!

Checking the following (all in /var/log/cups):

access_log has:
POST .... LaserJet ....Print-Job successful-ok

nothing in error_log

page_log has:
LaserJet root 10 [date] 1 1 - localhost


Thanks

 

Hm, not sure where the problem is...

 

I'm pretty sure that it is a lack of correct CR-LFs or FF or end of doc characters that the LaserJet series wants that Linux is not providing. There is quite a lot on the web mentioning this.
I would like to:
echo "Hi There" > /dev/lp0
but include experimental CRLF or FF etc - but am not sure how to do this.
When I echo to lp0 the command just hangs until I Ctrl-C out of it - then get no print.

Another approach may be to somehow get these into the file test.txt but I am not sure if I can with nano - is there a way?

Another approach would be to put them in the file using a Hex editor. I can do this easily in Windows but is there a hex editor supplied with Ubu Srv?

Thanks again