Gestetner f250 Operating Guide

A.8

Paper storage environmental conditions directly affect the feed operation.

Ideally, the machine and paper storage environment should be at or near room 
temperature, and not too dry or humid. Remember that paper is hygroscopic; it 
absorbs and loses moisture rapidly.

Heat works with humidity to damage paper. Heat causes the moisture in paper to 
evaporate, while cold causes it to condense on the sheets. Heating systems and air 
conditioners remove most of the humidity from a room. As paper is opened and used, 
it loses moisture, causing streaks and smudging. Humid weather or water coolers can 
cause the humidity to increase in a room. As paper is opened and used it absorbs any 
excess moisture, causing light print and dropouts. Also, as paper loses and gains 
moisture it can become distorted. This can cause paper jams.

Care should be taken not to purchase more paper than can be used in a short time 
(about 3 months). Paper stored for long periods may experience heat and moisture 

Acid Content

5.5 pH or lower

Caliper

0.094 ~ 0.18 mm (3.0 ~ 7.0 mils)

Curl in Ream

Flat within 5 mm (0.02 in.)

Cut Edge Conditions

Cut with sharp blades with no visible fray.

Fusing Compatibility

Must not scorch, melt, offset or release hazardous 
emissions when heated to 200 °C (392 °F) for 0.1 
second.

Grain

Long Grain

Moisture Content

4 % ~ 6 % by weight

Smoothness

100 ~ 400 Sheffied

Face-down output tray

150 sheets of 75 g/m

2

 bond (20 lb) paper

Face-up output slot

1 sheet of 75 g/m

2

 bond (20 lb) paper