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From: tj@UTCS.UTORONTO.CA (Terry Jones)
Newsgroups: comp.laser-printers
Subject: Re: apple plw nt power spikes
Message-ID: <9105031718.AA15732@crayola.cs.UMD.EDU>
Date: 3 May 91 16:41:05 GMT
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>Laser Writer NT that causes lights on the same circuit to dim for a
>fraction of a second every few seconds when it is on, as if it is
>
>Is this normal?

Yes this is normal. There is a heater inside the fuser roller. (The fuser
roller melts the toner (which is plastic) onto the paper) I have seen what
you describe (lights dim) but generally only in buildings where the wiring
is less than ideal. I have even had to move the laser printer to a differnt
circuit sometimes when it causes computer crashes because of spikes. This
again was in locations where wiring was completely inadequate. Something
about computer installations in buildings that are >100 years old that 
always causes problems.

tj