Pressure Adjustment; Vacuum Adjustment - Kodak Versamark DS5600 Series Operator's Manual

The following sections describe how the functions of these parameters.

Pressure Adjustment

This procedure should only be done to match adjacent printhead ink
coverage. Consult a service technician before adjusting pressure.
Caution: Do not change the center point of the pressure by more than 1.5 psi
(10.3 kPa).
Note: You have a range of 1 psi (6.8 kPa) above and below the center point for
a total range of 2.0 psi (13.2 kPa). Changes of more than 0.5 psi (3.4 kPa)
may require changes to the charge voltage and stimulation phase. Print-
head operation depends on the correct relationship of pressure, charge
voltage, and stimulation phase.
Use the following procedure to change the center point of the operator ink
pressure adjustment range.
1. From the Control Menu screen, select Service Menu (8).
2. Select Parameters Menu (9), and enter the password.
3. Select Pressure (1).
Note: The pressure can be changed for one sequence (S) or all sequences (G).
4. Select (G).
Caution: Do not change the center point of the pressure by more than 1.5 psi.
5. Change the pressure setting by small amounts to find the lowest
pressure setting that prints without light print. If the system uses
multiple print stations, compare the print darkness to an adjacent
printhead's test patterns as well.
Lowest pressure setting: ________ psi.
Note:If possible, avoid changing the pressure more than ±1.0 psi from the
value entered on the Printhead Information Sheet.
6. Change the pressure setting by small amounts to find the highest
pressure setting that prints without dark print. If the system uses
multiple print stations, compare the print darkness to an adjacent
printhead's test patterns as well.
Highest pressure setting: ________ psi.
7. Calculate the center of the pressure range by subtracting the lower
pressure from the upper pressure. This value is the operator's
pressure range.

Vacuum Adjustment

The vacuum adjustment should be done only by a trained service
technician. It is never required as part of normal operation. It is done
during installation and then checked and adjusted if the print station,
printhead, or umbilical is moved.
Chapter 2. Operation
Print Station Operation
Operator Guide 39