Paper and epoxy "silkscreen"

[easphyx]

I just want to share my small invention. As an experiment I made a "paper and epoxy" board markings. Yes, it's just a paper covered (and infused) with epoxy resin. The surface is not very uniform so curing under pressure would be helpful. The uncured resin partially dissolves the laser printer toner which led to a slightly fuzzy image.

 

[JMFahey]

Interesting.

Now apply to a regular PCB which of course is fully cured.

You do not explain HOW do you apply laser toner to PCB surface.

 

[easphyx]

Interesting.

Now apply to a regular PCB which of course is fully cured.

You do not explain HOW do you apply laser toner to PCB surface.

What do you mean? As I said it's a regular PCB with a paper layer with a printed image on the top bonded and covered with epoxy resin

 

[JMFahey]

Ok.
Your description was not clear.
I thought you were using:

Paper Epoxy Substrate​

This is a PCB substrate made of paper impregnated with epoxy resin.

It has superior heat resistance, hygroscopicity, insulation resistance, and high-frequency characteristics compared to paper phenol substrates.

However, these characteristics are inferior to those of glass/epoxy boards. In addition, they are positioned as intermediate characteristics between paper phenol boards and glass/epoxy boards.

It is mainly used for single-sided boards, and specific applications include consumer electronic devices.

but you are apparently printing on a sheet of plain copier paper and then gluing it on top of a PCB.