46 Installation ENWW
Caliper field test
The specified caliper differs with the type of media used. See “Operating environment” on
page 30.
Use a micrometer to measure for caliper in the field.
CAUTION Never use the coarse-adjustment end of the micrometer when measuring for caliper. The coarse
adjustment will compress the paper fibers, resulting in an inaccurate reading. For example, if the
fibers are compressed, 6 mil paper could measure as few as 3 mils. Always use the fine adjustment
to measure for caliper.
Using the fine adjustment, slide the micrometer along the edge of the paper and measure at one
end. To double-check the accuracy of the reading, always measure again at the opposite end of
the paper.
Paper-finish field test
Paper finish, or smoothness, can be accurately measured with a Sheffield meter. If this tool is not
available, use a new U.S. dollar bill as a benchmark for comparing paper texture. A dollar bill has
a finish of 350 Sheffields, which is 100 over specifications. If paper feels as rough as a dollar bill,
it is recommended that users avoid continually using this paper in the printer.
Moisture-content field test
Use paper with 4 percent to 6 percent moisture content.
A ream or sheet of paper can be measured with a moisture meter. In general, only evaluate the
customer’s storage environment to determine if excess moisture or dryness is the cause of a
problem with paper.
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