The rollers are still slipping some. But now I need to move on to getting a good Toner Transfer.
So I tried the HP Presentation 130g paper. Passed it through the laminator 4 times. I pulled the paper off of the board dry. You can see in this pic that the toner bonded well. But it looks like it took the gloss off of the paper and stuck it to the copper on the upper transfer. The lower transfer is scratched since I used Scotchbrite and water to remove the gloss residue. I swear this laminator acts like it's too hot. I need to measure the temp of my old clothes iron so I have a reference.
http://rotordesign.com/pcb/HPpresentation.jpgMike
--- In Homebrew_PCBs@yahoogroups.com, "Mike Phillips" <mikep_95133@...> wrote:
>
> My thermocouple reads very close to the digital thermometer.
>
> I went to Staples and asked about returning paper that I don't like. They said yes. So I bought Hammermill Color Laser Gloss and HP Glossy Laser Presentation Paper 130g. The first thing I did was put the Hammermill in some water to make sure it's not water proof. It softens up but does not dissolve. It has gloss on both sides to I ran it with a plain sheet of paper covering the glossy side to keep the rollers from getting mucked up. So I printed out my boards and ran the sandwich through the laminator 4 times. The Hammermill paper is not sticking to the copper. That's good news. The toner is sticking somewhat. This is where it looks like I need more heat to get the toner to stick better. So as soon as this laminator cools off I'll open it up and look for the temp adjust pot and increase it.
>
> I'll run the Presentation paper through as well.
>
> Mike
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com, "sailingto" <sailingto@> wrote:
> >
> > Hmmmmm 294F - that's a bit cooler than most toner transfers. Of course it depends on what toner your printer has. The newer Brother series of printers use abotu 400F toner, but the "normal" toner is usually a bit over 300F.
> >
> > If you are showning only 300F at the inlet/outlet I'll bet it gets warmer inside - and it depends on the type of temperature control your lamanitor has. On my laminator the temperature will go up to around 330F to 340F, then turn off, cool down to around 280F or so, then turn back on to heat up again.
> >
> > Using a HP P1006 printer (OEM toner) I tend to get a good toner transfer up around 360F or better. I turn laminator on, allow to heat up to around 370 to 380F, do a quick run thru 4 or 5 times and the toner has transferred pretty good. If I allow the temperature to get too hot (over 400F?) the traces come out looks sorta "mashed" a bit, not the crisp eadges they should be.
> >
> > You might check the calibration of the themrometer by boiling a pan of water and checking the temperature. At sea level this WILL be at 212F. If you are at 10,000 ft elevation you will need to correct for that as the temperature is lower to boil water.
> >
> > Keep us informed on your progress - and remember, anything I post is open to correction/comments.
> >
> > Ken H>
> >
> > --- In Homebrew_PCBs@yahoogroups.com, "Mike Phillips" <mikep_95133@> wrote:
> > >
> > > The thermometer stabilized at 294F. Too cold? Too Hot?
> > >
> > > I checked it 2 places on the input side of the rollers.
> > >
> > > Mike
> >
>