173
, Electrical system
chap.4
(1) Adjusting Reduction / Enlargement
1. Adjusting the Longitudinal R / E on the
Platemaking Side
Adjustment procedure
1) Set the HELP mode.
Turn the power on with the PRINTING SPEED
ADJUSTMENT keys and held down.
2) Set to H-30 (Test pattern printing mode). Press
the PRINT key with the 3 and 0 keys held
down.
3) Set the plate darkness to NORMAL, perform
platemaking and paper*. No need to place the
document.
*DP-440/430 : A3 paper
*DP-340/330 : B4 paper
Standard values:
¡Check that A section of the printed test pattern is
200 ± 0.5mm.
If the clearance is not the standard value:
1) If not, adjust with the H-22.
HELP mode H-22 \ see p.244
Adjustment procedure
1) Prepare a basic document as shown in the figure.
Draw a line (pel path direction) at the position
30mm from the top end of the paper* and at the
position 200mm from the above line.
*DP-440/430 : A3 paper
*DP-340/330 : B4 paper
2) Place the document on the document table to
perform platemaking and printing.
Standard values:
¡Compare the size of A section of the printed
image with that of the basic document. Check
that the difference of the size is ±2.0 mm.
If the clearance is not the standard value:
1) If not, adjust with the H-24.
HELP mode H-24 \ see p.246
Center of the paper
,Electrical system
23S0312
¡Test pattern 2
HELP mode H-30 \ see p.252
2. Adjusting the Longitudinal R / E on the
Reading Side
Adjust the longitudinal R / E on the
reading side after the longitudinal R
/ E on the platemaking side.
IMPORTANT :
Before adjustment
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