Utax PF-3100, Service Manual

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3S3
1-1-5
(4-2) Curly envelopes
An envelope tends to curl excessively or become uneven in its thickness since it is constructed by paper which is folded,
creased, and seamed in many parts, making the stack of envelopes on the feeder tray unlevel. To avoid feeding problems,
the unlevelness of the stack of envelopes on the paper tray must be less than those specified in the following figures.
Figure 1-1-2Curl limits for envelopes
Reduce the envelopes, if necessary to keep the unlevelness of the stack of envelope within the specified limit.
(4-3) Post cards
The paper used in postcards should have a basis weight of 135 to 190 g/m
2
(0.3 to 0.42 lb./ream) and uncoated. The
paper should also satisfy the same conditions as white bond paper.
(5) Storage of envelopes and postcards
Store envelopes and postcards, making sure of the following hints.
Avoid leaving paper where it is exposed to sunlight.
Store envelopes in a clean, dust-free environment.
Temperature in the storage area should be maintained in the range from 50 to 95
°
F (10 to 35
°
C), and relative humidity
should be kept between 20 and 80%.
Thickness in bottom or top
must be less than 10 mm Thickness in right or left trails
must be less than 5 mm.
Vertical curl must
be less than 10 mm.
Horizontal curl must
be less than 5 mm.