On Fri, 25 Jan 2008 15:29:43 -0000, you wrote:
>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).
Check all the replaceable bits and pieces and see if they're clean. On
most HP printers, the drum and toner are one unit, so you should have
gotten a good one. However, if there's a regular pattern to the
missing pieces, you either have a bad fuser (the pattern will rub
off), or the drum might be bad. A call to HP support if possible
might help that.
>
>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.
>
If you are getting good results on paper, then one problem is that
the toner density might be too low. Not sure how to set this on a 4P,
I do know how to do it on a 2200D.
>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?
>
maybe a utility that HP has installed in the programs folder under HP
in windows.
Harvey
>Thanks in advance for your time,
>
>Pieter