Download the manual and see if such a pot exists.
The IIID had one (green), and i believe at least one newer model still had it.
Later they decided users are just to dumb to find and adjust that pot,
and built it into software instead.
ST
On Jan 26, 2008 12:15 PM, P <apache2000_nl@...> wrote:
> 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
> >
>
>
>
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBs
> Yahoo! Groups Links
>
>
>
>
>