Scanner bar? Does anyone know how to process these?

[ttutone1]

I believe these are from a scanner. I don't remember for sure. Does anyone know how to process them? What looks like gold seems to be in between a layer of glass and ceramic. I tried putting nitric on it to make sure the gold wasn't on the surface and nothing happened.

 

[g_axelsson]

It looks like the printing unit in a LED-based "laser" printer.

I don't know how to bond ceramics with glass unless there is a layer of clear epoxy between them. If there is then incineration ought to work to access the gold.

Disclaimer : I haven't processed any of this material so it's just speculations on my side.

Göran

 

[steyr223]

Hello
Not sure if mine were the same
I just bent the board inward so the glass was inside the bend then back out 1 time
(dont let the glass hit your eyeball were glasses)
.Enough glass came off to let the ap work
I did do a hcl soak to get rid of the 3 or 4 parts and solder

Again not sure if the same
Hope this helps
Steyr223 rob

Ps this probaly wouldnt work
For large amounts , i only processed About 300 of them

 

[niteliteone]

I believe these are from a scanner. I don't remember for sure. Does anyone know how to process them? What looks like gold seems to be in between a layer of glass and ceramic. I tried putting nitric on it to make sure the gold wasn't on the surface and nothing happened.

What did you expect to happen ???
Nitric will do Nothing to gold by itself, no matter how long you allow it to sit there nothing will happen.

 

[purewin]

Hi All,

I haven't done this either but from all my studies I think maybe:
1. Mechanically remove the glass.
2. Poorman's AR on the gold coated ceramic.

Thanks,

Purewin

 

[FrugalRefiner]

Welcome on your first post purewin!

Dave

 

[ttutone1]

What did you expect to happen ???
Nitric will do Nothing to gold by itself, no matter how long you allow it to sit there nothing will happen.

Ah Yes... I just put my foot in my mouth. I got lots to learn.
Nitric acid by itself will do nothing to gold.
I used some 22kt test solution. (nitric acid and muriatic acid)
I believe that the solution should have worked given enough time even though most if not all gold plating is 24kt.
Am I correct on this?
Please correct me if I am wrong.
Thanks!
Scott

 

[ttutone1]

Thank You to all that replied.
Here is what I tried.
I heated the end of one of them with a torch to red hot.
Then I put more 22kt test solution on it which allowed the gold to lift off. Probably dissolved the base metals underneath the gold...?
I took some more pictures with the microscope after I did this.

This is after heating to red hot with the torch. See the little bubbles in the surface material.

This is the black substance at the top of them on the main picture. Notice where only part got burnt away. The little wires sticking out.

This picture I just thought was cool with all the little connections. :lol:

 

[nickvc]

I gather you mean test solution for karat gold which is aqua regia and works by dissolving the gold and colouring the solution a certain hue to prove the karat or what it is close to. Unless you used the whole bottle it won't dissolve much gold but if your solution has turned yellow at least you now know it's gold. This material is similar to plates and cups with gold detailing and would probably work well using the methods to process them but the gold needs exposing first to allow the acids to work and then use HCl and small additions of bleach, this must be done outside or under a fume hood as the escaping gases are highly dangerous, once all the gold is in solution warm the solution,again be aware of the gases, allow it to cool, filter and use the precipitant of your choice.
If you are unaware of the dangers involved in this process or any others visit the safety section here on the forum before starting.

 

[niteliteone]

What did you expect to happen ???
Nitric will do Nothing to gold by itself, no matter how long you allow it to sit there nothing will happen.

Ah Yes... I just put my foot in my mouth. I got lots to learn.
Nitric acid by itself will do nothing to gold.
I used some 22kt test solution. (nitric acid and muriatic acid)
I believe that the solution should have worked given enough time even though most if not all gold plating is 24kt.
Am I correct on this?
Please correct me if I am wrong.
Thanks!
Scott

Just trying to keep you on your toes, instead of chewing on them
As far as the material you are working with, I don't have any answers to help you. My printer still works and I don't want to change that to offer help :lol:
But I will watch you and offer what assistance I can.