Dynamic Paper Tension Adjustment
385
6. Close the forms thickness lever all the way (pointer at ‘A’).
7. Attach the hook of a “fish scale” force gauge through the tape you installed in step 5. (See Figure 33.)
8. Pull the paper slowly straight up through the print station for about six inches and note the maximum force exerted on the
scale. Do not pull any page perforations through the print station. (See Figure 33.)
Figure 33. This figure shows how to use the “fish scale” to measure paper tension.
9. Repeat steps 6 through 8 several times and calculate the average value of force on the gauge.
10. The average tension should be 9 to 14 ounces (255 to 397 grams). If the average value is greater than 15 ounces (425
grams), paper handling and print quality problems are likely to occur.
Scale
To Next Page
Loading...
