asAs title tittle says, imI'm trying to print a very dense pcbPCB layout on a termal paper (https://www.tme.eu/en/details/tes200/materials-for-pcb-production/thermal paper).
I'm using a laser printer, as it is mandatory. ProblemThe problem is, you can see some little grains/gaps all over the printed pcbPCB design.
What can iI do to prevent this? Is this due to dust/grease on the paper? or bad printer/printing method.?