Re: Something is bugging me. Please help.
Both the drum and the dev carry the same charge to start. Usually between -600 and -700 volts. The printhead then writes the image on the drum, thus causing the image portion of the charged drum to carry a different voltage. The charged toner is then attracted to the portion of the drum with the different charge.
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Re: Something is bugging me. Please help.
Kyocera services manuel will go into detail on the copy process. Kyocera usually hides the voltages in specification page or not listed at all.
Most of the settings are DFW do not F with and are digital.Leave a comment:
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Something is bugging me. Please help.
Let me say this upfront. This information is only to satisfy my curiosity. It's not a necessity to repair a copier but I'd like to know. Back in the day, I started in the business working for a Sharp dealer. That's where I was taught the basic copy process (analog) and later the digital copy process. I clearly remember one of the main differences being that the polarity for the drum and DV voltage was opposite from the analog machines. That's been a long time ago and it's foggy in my mind.
Anyway, when I started training the new guy, I wanted to be accurate when describing the copy process and include the correct drum and DV charge voltage. You may want to call it "bias" voltage but you know what I'm talking about.
Anyway, nowhere in the manual can I find any information of this. Oh, I can find what board produces the voltages to the mag roller and PCR and the control signals for each but that's about it.
I'd like to know is the mag and PCR voltage negative or positive? And what are these voltages?
Lastly, what is the polarity of the developer? (If the dv has a positive polarity, then the toner will have a negative polarity. Correct?)
Do they still teach any of this or no?
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