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Re: ink jet vs. laser



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Has anyone been able to look at Rupert Evans page at
http://www.staff.uiuc.edu/~revans4/home.html ? It seems to have disappeared.
I get a "404 - File not found" message. Can you point us in the right
direction, Rupert?

----- Original Message -----
From: "Rupert N. Evans" <r-evans4@STAFF.UIUC.EDU>
To: <BOOK_ARTS-L@LISTSERV.SYR.EDU>
Sent: Friday, October 05, 2001 5:21 AM
Subject: Re: ink jet vs. laser
>
> Don't just think about it, understand it.
>          The most common reason for toner not adhering well to a substrate
> (e.g. paper) is that the toner was not fused properly. The fuser roller on
> laser printers and copiers heats the toner and the substrate and presses
> the toner against the substrate. If sufficient heat is available for an
> adequate amount of time, the fusing process occurs. More heat and/or time
> are needed for thick substrates than for thin. The fuser roller loses heat
> when it is in contact with the substrate (and the toner). Large sheets of
> substrate draw more heat from the fuser roller than do small sheets.
> Pausing between printing sheets allows time for the fuser roller to
reheat.
>          A second, less common, problem is using coated paper or another
> smooth surface that does not allow the interlocking of toner with fibers
of
> the substrate.
>          The standard test for adherence of toner to the substrate is as
> follows: Get a roll of 3M #230 drafting tape, preferably one inch wide, at
> Quill or almost any office supply store. Turn back a half-inch of the end
> of the tape, adhesive side to adhesive side, to form a handle. Tear off
the
> piece of tape about 4 inches long, and smooth it onto the copy with four
> fingers of one hand. (Don't use your thumb or fingernails.) Pull the
handle
> (end of the tape) back along the top of the remainder of the tape, making
a
> 180 degree peel test. If any toner is visible on the adhesive side of the
> tape, the copy has failed the test.
>          Several laser printers, e.g. Hewlett-Packard model 8100, allow
one
> to adjust the fuser roller temperature.
>          For further information about toner stability, see this topic on
> my home page at http://www.staff.uiuc.edu/~revans4/home.html
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