Steris RELIANCE 400, Operator'S Manual

Page: 94 / 106

6-10
122994-513 Operator Manual Routine Maintenance
6.10 Storing Thermal
Paper
Thermal paper is subject to fading with time, humidity and exposure
to light.
It is the manufacturer’s recommendation that thermal paper be
stored in a dark place with an average ambient temperature of less
than 77°F (25°C) and a relative humidity less than 65%. Under these
conditions, paper remains readable for at least five years. It is recom-
mended that if the printed data is to be retained for periods of time
longer than five years, an additional photocopy should be made for
record retention. In any case, a duplicate set of records should be
maintained in the files of the engineering or maintenance depart-
ments.
Thermal paper begins to develop color at about 158°F (70°C), how-
ever, under humid conditions, it might begin to develop at an
accelerated rate. If stored for 24 hours at 140°F (60°C), the paper
shows some signs of development. It also shows signs of develop-
ment if stored for 24 hours at 113°F (45°C) and a relative humidity of
90%.
Do not store thermal paper next to other chemically-treated papers –
such as pressure sensitive paper or other types of recording round
charts – as this may cause fading in print. If thermal paper is to be
stored in the same area, always ensure it and other chemically-
treated papers are kept in separate envelopes.
Thermal paper discolors when exposed to direct sunlight.