toner transfer pcb method

[david90]

toner transfer pcb

I used an iron to transfer the toner to a pcb but I got blurs between pins. Some of the trace weren't sharp and looked rounded.

Did I put too much pressure on the pcb when ironing?

 

[s_cihan_tek]

laminator toner pcb

Hi,

I guess either you overheated the paper and it expanded, or you slide it by applying too much pressure with the iron. In the second case the traces should look like they have slight shadowing near them.

Regards.

 

[david90]

toner transfer temperature

I'm using the press n peel and I'm having trouble knowing when to stop ironing. If I iron it too much the toner expand and bridge between pads (learned it from 2nd attempt).

 

[s_cihan_tek]

pnp pcb paper

I've used PnP a lot until now without any problems. You should iron it 6-7 minutes without applying too much pressure. Whats more important is the temperature of the iron. It should be at the highest temperature which doesn't make the PnP expand. The Pnp should be flat like new after the ironing.

Also the ironing should be made without steam.

Regards.

 

[Awarapunshee]

One more thing: you should darkest the print possible (while printing in the laser jet etc)

 

[david90]

I've used PnP a lot until now without any problems. You should iron it 6-7 minutes without applying too much pressure. Whats more important is the temperature of the iron. It should be at the highest temperature which doesn't make the PnP expand. The Pnp should be flat like new after the ironing.

Also the ironing should be made without steam.

Regards.

When you peel off the pnp, should the traces on the pcb look blue or black? I have experimented with both an iron and a laminator. When I use the laminator, the traces after peeling off the pnp look blue. With an iron, it looks black.

 

[s_cihan_tek]

It should be dark blue. Darker than the color of the unused paper. It gets a bit darker when you heat it more.

 

[david90]

It should be dark blue. Darker than the color of the unused paper. It gets a bit darker when you heat it more.

What I'm trying to determine is whether or not I overheated the pnp. When using an iron, my trace is black colored. I think I'm overheating the pnp because the trace color it should be a dark blue like you said and not black.

 

[s_cihan_tek]

It should be dark blue. Darker than the color of the unused paper. It gets a bit darker when you heat it more.

What I'm trying to determine is whether or not I overheated the pnp. When using an iron, my trace is black colored. I think I'm overheating the pnp because the trace color it should be a dark blue like you said and not black.

Yes, probabily you are.
It's simple to be sure though, just try the exactly same procedure with a lower temperature setting and look at the results.