Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Hello all,

I have a question : I recently bought a secondhand Laserjet 4P to make
my own artwork.
Besides the fact that the printer doesn't print that black (with a new
tonerkit) it also prints irregular traces (small bits missing).
On my former job we also used a laserjet 4P. Printing always went great
on heavy tracing paper).

I have tried several types of transparants. (overhead and tracing
paper) but I can't get any good results no mather what I do in the
driver menu or printermenu.

Is it possible that I have to clean the printer? Or is there a
possibility (potentiometer or simular) on the printer to increase the
amount of toner?

Thanks in advance for your time,

Pieter