Service manual

48 Installation ENWW
Cut-edge condition field test
Use a loupe or maginfying glass to observe the condition of the cut edge. Under magnification, a
good edge appears even. A poorly cut edge shows fraying, jagged edges, compressed fibers,
and other damage.
Furnish (fiber-composition) field test
Use paper made from 100 percent chemical wood pulp and/or cotton fiber. Recycled paper that
contains no more than 5 percent groundwood is also acceptable.
Read the ream label to determine the fiber composition of the paper. Paper is usually specified
as xerographic bond (suitable for copiers or laser printers) or cotton bond. Paper of 25 percent,
50 percent, or 100 percent cotton bond is indicated on a watermark. If paper is less than 25
percent cotton bond, the watermark will not indicate a percentage.
A wood-pulp test kit can also be used to test fiber composition.
Fusing-compatibility field test
Inspect the rollers for ink buildup from preprinted logos or letterhead, and for toner buildup or
spots. Inspect printed output for repetitive defects and smearing. If necessary, have users
contact their forms vendor to ensure that the paper is compatible with HP LaserJet printers.