HP 9845B/C CE Handbook page 28

2-14 9845B/C
Environmental, Installation, and Preventive Maintenance Requirements
The average life of the internal thermal printhead is about 50,000 feet of paper, or about 250
rolls.
Note
If
you want to use Metric paper in the thermal printer, the Metric
Paper Spacer
(PIN
5040-8145) must be installed in the paper hol-
der, on the right-hand side.
Two keys are used to control the printer paper. The PAPER ADVANCE key advances the paper
until the key is released. The TOP OF FORM key advances the paper past perforations to the
top margin (approximately 1.25 cm, or 1f2 inch, below the perforations). If the paper is not
perforated, it is advanced 30.5 cm (12 inches).
Printer paper is loaded using the following procedure.
• Make sure the computer is switched ON.
• Lift or remove the access cover on the top of the printer by pushing down on the raised
surface at the rear of the door. The door can be removed by lifting up and pulling it toward
you.
• Remove and discard the paper core of any previous roll. If the remaining roll of paper is
small and a new roll is to be installed, remove the old roll. To do this, first unroll and lift the
old roll upward. Then tear the paper off using the paper guide.
• If any paper remains in the printer mechanism, remove it by pressing the PAPER AD-
VANCE key until the paper is completely out.
• Remove the first layer of paper from the new roll. Be sure the paper has a cleanly torn or
cut edge. Fold the corners in to form a point.
• Insert the new roll such that the free end is positioned as shown. Press the PAPER
ADVANCE key until the paper appears at the front of the printer. Then reinstall the access
door by placing it on the hinge pins and pushing until it snaps into place.
09845-90039.
rev:
4,84