How does a Primary Charge Roller work?
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While the basic concept seems to be fairly simple to understand I have been having trouble finding more information on the physics behind it.
In this case for example the Primary Charge Roller.
In this case for example the Primary Charge Roller.
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I guess this is mainly an engineering problem - the basic physics of charging a roller is to just apply a voltage to it, and these charges will jump over to another (uncharged) object that comes in contact with it (the drum, in the laserprinter).
The engineering problem is to get a perfectly even charge, to make that charge transfer to the photoconductive drum (the image forming element where the laser "writes" the image), and then to erase or even out any residual charge before the next turn of the roller.
I think your question about if it's possible to do this to other materials (wood etc) is not specific enough - of course you can apply a charge to other materials, but the laser printer is a delicate piece of engineering designed to solve a very specific problem - how to get a toner onto a paper in a certain pattern - and the specific engineering solutions there don't readily transfer to for example charging a highly irregular surface like a piece of wood, at least not given the same requirements (thousands of dots per inch of perfectly homogenous intensity).
The engineering problem is to get a perfectly even charge, to make that charge transfer to the photoconductive drum (the image forming element where the laser "writes" the image), and then to erase or even out any residual charge before the next turn of the roller.
I think your question about if it's possible to do this to other materials (wood etc) is not specific enough - of course you can apply a charge to other materials, but the laser printer is a delicate piece of engineering designed to solve a very specific problem - how to get a toner onto a paper in a certain pattern - and the specific engineering solutions there don't readily transfer to for example charging a highly irregular surface like a piece of wood, at least not given the same requirements (thousands of dots per inch of perfectly homogenous intensity).
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