Technical laser jet question

[Frizzo]

i'm looking at this technical information and it says the secondary corona wire in a laser jet applies a positive charge to the paper as it passes through....i didn't think paper could carry a charge? wth?

 

[printerman]

i'm looking at this technical information and it says the secondary corona wire in a laser jet applies a positive charge to the paper as it passes through....i didn't think paper could carry a charge? wth?

its does, long enough to hold the toner on the paper till it gets to the fuser. but gives off a minute amount of ozone gas...thats why HP switched to PCR (a roller) in the paper path.
people got really uptight about ozone gas..

 

[Frizzo]

sounds like you know what you're talking about, but i would really like to know how paper holds a charge? as i understood it, wood is completely inert in terms of conductance.

 

[printerman]

static! but I am not a physicist. its a charge the toner has...it has minute amount of oxides in the toner which is lays/attracted to the paper, because the toner is laying there.
Remove the toner, BEFORE it gets to the heating assy, toner will come off.
its only a milly second from the charge to the fuser. then its baked

thats sir, Is the lesson for the day..time for a brew

 

[Frizzo]

ok i still want to know how paper holds a positive charge, but i'll give you best answer because you put the work in.

 

[Frizzo]

Best answer selected by Frizzo.

 

[printerman]

now that I re-read the question...once toner is laid on the paper, its the static charge from the corona wire, that holds the iron oxides in the toner.

 

[iam2thecrowe]

a transfer roller/wire sits opposite to the drum/belt and as the paper passes over the transfer roller/wire the toner image from the drum/belt gets pulled onto the paper by the transfer roller. Then it goes through the fuser to be fused to the paper. If you google, "how a laser printer works" you should find some diagrams and things.