Digital BW, The Print

Folks,

every now and then my printer will stop printing and my Mac 
freezes if I print via the piezo driver.  Today I printed a certain file 4 =

times, and it stopped in the middle of # 4.
I had to restart the Mac and to load the file again. I started 
printing and the print job was discontinued again.

I´ve got the feeling, that kinda working-space-overflow is the 
reason.  The question arises, whether the piezo driver spools 
the job somewhere, and if this "somewhere" is running out of 
space, the whole process is stopped.

Why do I believe this?  Because sometimes, if I start a piezo 
printing job it is clearly to be heard, that the driver deletes large 
(temporary?) files, before the printing job begins. But this 
doesn´t happen each time. Mostly the job starts right away.
So my impression is, the driver sometimes forgets to delete 
spooled files and then some overflow happens.

On the other hand this never happens if I print even much larger 
(RGB) files via the Epson driver. So it can´t be a problem of too 
small scratch disks or spool folders. But every spool folder 
should overflow sometimes, if the temporary files are not deleted 
after the print job is finished.

Anyone experienced this ??

PS I dedicated 4 scatch disks (each 2 gig) to PS and a spool 
disk with about 20 gig to the epson driver.  Also there is plenty of 
space on my system disk. So the problem seems to be the 
Piezo Driver, no?

Thanks for comments.
Bernd