UBI EasyCoder 501 SA, Руководство по обслуживанию

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UBI EasyCoder 501 – Service Manual
33
6.1
Description
6. LABEL SLACK ABSORBER
The label slack absorber (also called “high speed label controller”)
compensates for sudden jerks at the paper web, e.g. when high
speed printing is started and stopped. When the printing starts, the
tension is increased and the absorber is pulled forward/upward.
Soon the heavy paper roll starts to rotate and the tension decreases.
The spring-loaded absorber can then return towards its original
position. During high speed printing, the absorber will flutter back
and forth, compensating for the variations in tension.
Since the label slack absorber only is required at high speed printing
(> 100 mm/sec. = 4"/sec.), it is has been omitted from the Easy-
Coder 501 model (as opposed to the EasyCoder 501 E and SA
models), where it is replaced with a simple shaft with two green
guide washers (see below).
To facilitate paper load, the label slack absorber can be rotated 180
°
clockwise to a locked position. A green paper guide can be slid
sideways to fit different paper widths.
Continued!
Guide Shaft
(EasyCoder 501)
Guide Washers
(green)
Label Slack Absorber
(EasyCoder 501 E & EasyCoder 501 SA)
Grip
(green)
Paper Guide
(green)
Note!
The inner guide washer shall
be positioned as to guide the
paper 20 mm (.79") from the
printer's centre-line wall.