Homebrew PCBs

Thanks for your replies.

I didn't find any settings in the driver to increase the toner amount.
All the settings on the printermenu and driver are set to the 
most 'darkest' setting.
I know some printers have a hardware (trimpot or switch or something) 
to increase the amount of toner...

Is there a possibility it can be done on the pcb in the printer?

Pieter




--- In Homebrew_PCBs@yahoogroups.com, "Leon" <leon355@...> wrote:
>
> ----- Original Message ----- 
> From: "P" <apache2000_nl@...>
> To: <Homebrew_PCBs@yahoogroups.com>
> Sent: Friday, January 25, 2008 4:29 PM
> Subject: [Homebrew_PCBs] HP Laserjet 4P darker printout
> 
> 
> > 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?
> 
> Perhaps the printer is faulty, I used to get quite good results 
with a 4P. 
> Ink jets are *much* better, if the correct medium is used.
> 
> Leon
>