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Subject: Magnetographic printer

Magnetographic printer

From: Rupert N. Evans <r-evans4>
Date: Monday, July 8, 1996
Nipson Printing Systems, a member of Groupe Bull, produces high
speed magnetographic printers. Their Model 7000 produces 430 letter
size pages per minute or 6 million pages per month. It is web fed,
with a maximum web width of 20.5 inches (520 mm).

Conservators might be interested in the following quotation from
their sales literature:

   "Cold Fusing. Fusing at low temperatures considerably increases
    the ability to print on special media...labels, glassine window
    envelopes, plastics, tip-on cards, carbonless paper, pre-glued
    mailers. The paper temperature does not exceed 122 degrees F (50
    degrees C)...Fusing. The fusing station is comprised of a
    regulated pre-heating plate and a group of halogen lamps. The
    heating plate heats the paper in order to ensure good toner
    fixing...The radiant heat of the halogen lamps fuses the toner
    on the preheated paper to ensure toner adhesion."

Obviously, paper printed using this process will be more sensitive
to heat than paper printed by laser printers or photocopiers.

I have requested information on the composition of the toner, the
temperature at which it remelts, the effect of pressure during
storage of printed sheets, and long term stability of printed

Rupert N. Evans
Prairie Publications
101 West Windsor Road, #4107
Urbana, IL 61801
Fax: 217-337-7469

                  Conservation DistList Instance 10:7
                 Distributed: Wednesday, July 10, 1996
                        Message Id: cdl-10-7-006
Received on Monday, 8 July, 1996

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