8-1
8 Paper Specification
8.1
Basic Theory of Operation
Laser printers use the electrophotograhic technology. The laser beam writes an
electrostatic image onto a rotating photosensitive drum (Photoconductor). As
this image passes the developer station, a dry, powdery toner is attracted to the
image areas. The developed image then advances to the transfer station where
the drum contacts the fanfold paper and the toner image is electrostatically
transferred onto the paper. After transfer, the paper passes through the fuser
where heat and pressure are applied and the toner fuses (melts) onto the paper.
The fanfold paper is then deposited to the paper exit.
To create the printed image, all print media must be transported through the
printer, charged electrostatically, and heated. This is why paper properties such
as electrical resistivity, caliper, finish, and stiffness can affect the print quality
and paper handling perfomance of the laser printer.
8.2
Storing Media
Follow these guidelines when stacking and storing fanfold paper:
S
Do not store cartons with fanfold paper directly on the floor. Place
cartons on a pallet or on shelves.
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The carton itself must have a relative humidity of 33 up to 47 % at a
temperature of 19° to 23° C (68° to 73° F). Otherwise the humidity
penetrates from the carton into the fanfold paper.
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Do not store the fanfold paper near heating elements, water pipes, open
windows, clammy walls, or in direct sunlight.
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The fanfold paper in the carton and plastic wrap should be stored at a
room temperature of 18° to 24° C (65° to 75° F) and of a relative
humidity of 40 to 60 %.
Paper Specification
8-2
8.3
Environmental Considerations
The printer is designed to operate in a wide range of environmental
conditions. For best performance, store and use fanfold paper at 19
E
to
23° C (68° to 73° F) and a relative humidity of 33 to 47 percent.
Follow these guidelines when media is used in an environment outside the
temperature and humidity ranges:
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Do not expose the paper to humidity or temperature extrems. If paper is
left unwrapped or on the paper input shelf of the stacker, extreme
changes in the environment will cause the paper to take on unwanted
properties.
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In the case of humidity extremes, keep paper tightly wrapped in plastic.
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If a significant temperature difference occurs between the paper storage
area and the printer´s operating environment, before unwrapping the
paper, allow it time to adjust to the temperature in the printer´s operating
environment. The greater the temperature difference and the greater the
amount of paper to acclimate, the longer this time period should be.
Allow one day for every 10° C (18° F) difference in temperature between
storage environment and printing environment.
8.4
Guidelines and Specifications for Selected Fanfold Paper
Properties of fanfold paper are subject to change. It is the user´s responsibility
to monitor the quality of the paper.
The printer is designed to print onto standard electrophotographie (laser type)
paper. Because there are many types of media and variations can occur in the
process of manufacturing media, it is important to select the best media for the
printing application.
