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Laser Printer PCB of Toner transfer without fusing / fixing
1728 1 Dec 06.2019, 17:36:07

Picked up a discarded laserjet from the trash to use for toner transfer, but the fuser film sleeve was broken. Sleeves are replaceable, but doing a single repair is more expensive than just buying a working second hand printer at the thrift shop. I also hear fuser repairs often turn out poorly.
But, I hate throwing stuff away if there is any chance of repairing them.
The printer actually prints ok in the sense that text comes out fine on the paper, it is just the paper that gets stuck in the fuser, and of course the fuser doesn't heat up properly so the toner wipes off the paper.
But since you are supposed to iron the paper onto your copper board, does it really need to be fused to the paper?
It will take quite a bit of destructive modification of the printer to make this work, that is why I'm asking you guys first instead of just trying it myself.
By the way, I'm already aware that it is better and likely cheaper to just buy boards from a proper fab. I'm want to use this printer just for the sake of recycling.

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A****min

Dec 12.2019, 18:56:16

No it doesn't, assuming the static adhesion is sufficient to hold it in place while you fuse it to the pcb.
Indeed, direct-to-pcb toner printer mods don't typically use the fuser,  the toner is deposited onto the pcb and fixed (fused) later by baking or acetone vapor bath.

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