Ioline FJ Printer, Service Manual

Page: 52 / 116

52
Ioline FJ Printer & StudioJet Service Manual
Motion adjustment
To understand Motion Adjustment , think of each reversal in car-
riage direction as a “pass”. With every pass, each head draws a line
1
/
2
-in long. If the FJ Printer has 2 heads, it draws a 1-in line for each
pass. A four-head machine will draw a 2-in line.
If the
Motion Factor is too low, the
printer will draw the line too late. Visu-
ally, this appears as if the line drifts to
the right, as shown in Figure 29 . Mo-
tion Factor set too high results in drift
to the left.
Motion Adjustment is done when each
carriage pass doesn’t line up with the
previous one. Lines will “Stair-Step”
back and forth and not look right.
When the carriage is in motion the
‘Motion Adjustment’ will tell the ink
cartridge to print sooner or later de-
pending on the number in the ‘Motion
Adjustment fi eld’ in the FJ8 Control
Center.
1. Make sure the plotter is connected to the computer. Press Set
Origin to illuminate the green OK LED on the keypad.
2. Open Control Center .
3. Select ‘ Tools/Cartridge Calibration ’ on the toolbar.
4. The Cartridge, Motion and Gap Adjustment Window will
open.
5. In the fi eld for Motion Adjustment , type in the number 40 to
start.
Figure 29. The heads are drawing the lines too late on this plot.
Scan
Scan
Poor motion adjustment
= Direction of carriage travel
Figure 28. The Motion Adjust
window.