Homebrew PCBs

Xerography is an electrostatic process, yes. I have not kept up with the 
processes used since the 90s, but it used to be that the toner was 
essentially very small plastic balls embedded with carbon. The toner was 
manipulated through the print process by charging the toner one way and 
the photoreceptor (print drum or organic belt) the other way and 
bringing them together so that the toner formed an image on the 
photoreceptor. Then the paper was put in contact with the toner-laden 
photoreceptor and the toner was transferred from the photoreceptor to 
the paper by yet another electrostatic operation. Once the toner was 
released to the paper, the toner image on the paper was fed through some 
sort of fusing process to permanently (more or less) attach the toner to 
the paper.


However, we experimented with a completely different process where the 
toner contained iron as well as carbon and the toner was manipulated 
partially with electrostatic mechanisms and partly by magnetic 
mechanisms. I don't remember much about the overall print process. We 
got it working well enough to demonstrate but not well enough to 
productize it. IIRC, The original work was done by Kodak in the 80s.


DaveD




On 10/30/2016 9:10 AM, Roland Harriston rolohar@... 
[Homebrew_PCBs] wrote:
>
> Pardon Me:
>
> But isn't "xerography" or laser printing essentially an electrostatic 
> process.
> It's been a long time since I read about it, so correct me if I am in 
> error.
>
> So,  a ferrous (iron) content would be in the toner?.
>
> Regards,
>
> Roland F. Harriston P.D.
> ********************
>
>>
>>
>
> 






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