Epson 1640XL - Manual (Page 96)

4-30 Using Your Scanner
R4C5460
Rev. C
A5 size USING.FM
12/4/00 Pass 3
L Proof Sign-off:
C.Fujiwara
_______
M.Fujimori _______
J.Hoadley _______
7. Compare the left edges of the scales on the scanned image; the
starting points of the scales should match exactly. If both
scales start at the same line (for example 0), skip to step 11.
Otherwise go to the next step.
8. See the left edges of the scales of the scanned image. Every
line of the scale that is missing is equal to 0.4 for mathematical
purposes. Then calculate the adjustment angle using the
following equation.
The adjusting angle = (scale A - scale B) / 4
For example:
If scale A starts at line 0, then 0
×
0.4 = 0; the value for
scale A = 0
If scale B starts at line 2, then 2
×
0.4 = 0.8; the value for
scale B = 0.8
(0 - 0.8)/4 = -0.2
The angle you need to adjust the adjust pin = -0.2
Matching Do not match
A starts at 0 A starts at 0
B starts at 0 B starts at 2