Riso V8000 Series, Technical Manual

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CHAPTER 14. MASTER MAKING SECTION
5. Checking and Adjusting the Horizontal Printing Position
Checking and Adjustment Procedure
Make master using test mode No. 50 on both print drums and make prints.
Measure the white margin on the paper, on the left and right. The width of both margins should equal
in centering the image.
If the margins do not equal, start up test mode No. 294 (TPH horizontal write position adjust) and
make the necessary adjustments separately for the 1st and 2nd print drums. Input number on this
test mode No.294 for print drum No.1 and print drum No.2 to center the image.
Positive settings move the image making position toward the left, while negative settings move the
position toward the right. If following sketches are referred, Print
A needs to have a negative number
( - ) input on the test mode, while Print B requires a positive number ( + ) input to center the image.
Make master and prints using test mode No.50 again to confirm that the image has centered.
The print position of print drum No.2 should be adjusted to within 0.5 mm horizontally against that of
print drum No.1.
Print A
LEFT (rear) RIGHT (front)
S1450
Print B
ADJUSTED
S1451
S1452
LEFT (rear) RIGHT (front)
A B C D
E F
( A < B ) ( C > D )
( E = F )