Good info on toner temps. Thanks.
I think the TL901 is too low in temperature to use for transfer "as-is" (according to their specs), but I want to get one and have a look at the existing circuit. The pdf posted by josemj1 on modding this model looks interesting, but I'm not sure a new temp controller is required. If the TL901 uses a diode as it's sensor, then it's probably possible to bias the circuit to raise the temp up to 315F. If not, I think I'll have a look at your GBC temp controller and see if it can be used/adapted for the TL901. I don't have a nifty IR thermometer though. Maybe something I should look at getting first.
I also found a GBC H212 used, non-working. I don't know if it's a good model for PCBs, but it looks like it can be easily modded for the temperature. I hope it's just the fuse, or the temp cut-off and not the control circuit.
Marc
--- In Homebrew_PCBs@yahoogroups.com, "sailingto" <sailingtoo@...> wrote:
>
>
> > What temperature does the toner need to reach in order to transfer?
>
> Temperature required depends on toner - most toners (HP, etc) require around 300F to 320F for good transfer. At 270F the toner will transfer, but doesn't stick as good to the copper requiring care to prevent toner coming loose. The new Brother 2040/2070 series of printers require over 400F to melt the toner for transfer - and better up around 450F.
>
> > I'm thinking about using the TL901 laminator for double-sided board,
> > 1/16in thickness. How many times would I need to run the board >through the laminator?
>
> How many times thru really depends on amount of pressure and temperature of laminator. The GBC that is touted so heavy by Pulsar (and sold on ebay for $25 shipped ( think it's went up a bit now)only has about 260F to 270F max before the thermal switch turns the heater off, then cools down to about 240F or so before heater comes back on. This laminator works on single or double sided board up to about .062" out of the box. It helps to bevel the edges of .062", but not necessary, just makes it a bit easier.
>
> I built a temperature controller for my GBC laminator to hold the temperature around 315F. Using most papers it requires 4 to 6 trips thru the laminator for good transfer with my HP P-1006 printer.
>
> I looked at the 901 you purchased at WalMart and it looks good. It would be a good idea to run some PCB thru and check the temperature as it comes out to get a good idea where it's at.
>
> Have fun and good luck,
>
> Ken H>
>