[padg] RE: RE: Re: Preservation photocopiers

["D NISHIMURA" <dwnpph@xxxxxxx>]

Amanda: Assuming that your photocopier was well designed, then it sounds
like you may need to have your fusing unit adjusted or repaired.
Electrophotographic copies use a colorant mixed with a powdered resin to
make the "image". In most machines, the fusing unit heats the resin to
melt it and presses the mixture of melted resin and colorant into the
top of the paper. If your fuser isn't getting hot enough, then you may
find that adhesion is poor. There are apparently also "cold fusing"
systems that just use pressure (and a softer resin), but in almost 25
years in the field, I've never run into a cold fusing
electrophotographic system personally so I expect that they're pretty
uncommon. Be aware that because the image sits on top of the surface of
the paper rather than being absorbed into a coating or directly into the
paper, it will be more prone to abrasion damage than other kinds of
imaging systems. Even creasing the paper can be enough to cause the
image material to come off along the crease. Probably the most common
cause of text transfer that we've seen has been from storage of laser
prints or electrostatic copies in PVC binders or folders. Many of these
PVC materials contain a large amount of plasticizer (typically oily
phthalate plasticizers) that soften the resin enough to make it sticky
(at the same time reducing the adhesion to the original page) so we
often see text transferred from the recto of one page to the verso of
the next. In the worst cases we find stacks of pages all stuck together
by the softened resin.

Good luck.

-Doug
Douglas Nishimura
Image Permanence Institute
Rochester Institute of Technology 

-----Original Message-----
From: Langendoerfer, Amanda [mailto:alang@xxxxxxxxxx] 
Sent: Wednesday, March 12, 2008 6:07 PM
To: padg@xxxxxxx
Subject: [padg] RE: Re: Preservation photocopiers

Has anyone had any problems with ink rubbing off of preservation copies
made on a photocopier? I have printed a couple of temporary display
tags, and noticed that the ink seemed to rub off fairly quickly
(resulting in a blotched appearance).  I was curious about the
implications of this for information printed for archival purposes. 

Amanda Langendoerfer
Special Collections Librarian/Archivist
Pickler Memorial Library
Truman State University
Kirksville, Missouri

-----Original Message-----
From: Julie Arnott [mailto:jarnott@xxxxxx]
Sent: Wednesday, March 12, 2008 3:35 PM
To: padg@xxxxxxx
Subject: [padg] Re: Preservation photocopiers

Xerox offers a model with a beveled edge that is preservation friendly. 
  We are considering moving to Xerox multifunction printers that include

the beveled edge.

Grant, Tyra wrote:
> I'm seeking preservation photocopier recommendations.  Mostly for 
> replacement pages---what's works well these days---any preferences?
> Thanks,
> Tyra Grant
> Head, Preservation Department
> University of Kansas Libraries
>  

--
Julie Arnott
Head, Preservation Department
University Libraries
245 Hesburgh Library
University of Notre Dame
Notre Dame, Indiana  46556-5629
phone: 574-631-0872
fax: 574-631-6772
email: jarnott@xxxxxx