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How hot should paper be when it comes out of a laser printer?

Posted on 2004-10-13
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Last Modified: 2010-05-18
We have a laser printer which we think is running too hot.  The users who work around it complain it  smells, and is giving them headaches and sore chests.

We've had a guy out from the manufacturer, who said there was nothing wrong with it, but gave it a clean up.  He said the model had a thermal cut out which stopped it from getting too hot, so the smell couldn't be due to overhearing.  However, despite the clean up, it's still smelling.  The users have started complaining that sometimes the paper is too hot to pick up (even on 2 page print runs).

So, does anyone know how hot shoud paper be when it comes out of the printer, and what is unreasonable, implying their thermal cut off is either too high, or misfunctioning?
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Question by:bigc
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Herman D'Hondt earned 300 total points
ID: 12296866
The temperature does vary a lot from printer to printer. On some the paper is almost too hot to touch, whereas others leave the paper just warm.

The technician is correct, there usually (always?) is a thermal cutout which stops the fuser from getting too hot. The smell is more likely an ozone smell. This comes not from the fuser but from the high voltage areas.  Some printers have an ozone filter, but most don't seem to these days. You may ask the technician what they can do about ozone smells.
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by:bigc
ID: 12297095
It's not an ozone smell - that's the problem.  The users are fairly realistic, in that they realise no laser printer will ever be smell-free.

I'll check with the manufacturer about how hot it should actually be running.  Thanks for your prompt response.
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Expert Comment

by:zincau
ID: 12354700
Are you using standard paper? or some sort of pre printed paper?

In my experience, different pre printed papers (particularly glossy ones), can retain a lot of moisture, which tends to absorb heat. -> I have seen clouds of steam rise out of printers at my work.


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by:bigc
ID: 12355840
It's actually pre-printed paper (although not glossy), but I'm pretty sure it's nothing to do with moisture, as plain A4 gets incredibly hot in the printer too.  

My next step is to contact the paper manufacturer to see whether there's any problem heating the pre-printed inks to these temperatures.
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