2500_Users_Manual - 第179页

Preventi ve Mai nten ance ProM aster 25 00 User Manua l 5-25 Adjusting Position of Print on Label (Dot Matrix Printer) The left-to-righ t posit ion of cha racters on the label i s determined by label calibration. You can…

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5-24 ProMaster 2500 User Manual

Corrective Adjustments

Changing Dot

Matrix Printer

Ribbon Cassette

Refer to the procedure on page 5-57.

Changing Thermal

Printer Ribbon

Refer to the procedure on page 5-59.

Adjusting Dot

Matrix Print Head

Gap

The print head gap is set at the factory and will not usually need to be

changed. If there are substantial changes in the thickness of the label or

label backing, however, you may need to make an adjustment. If the gap

between the platen and the print head is too wide, it may result in slanted

or fuzzy printing. If the gap is too narrow, the print ribbon may rub

against the labels, smudging them and making the background gray.

CAUTION: Dangerous high voltages are present. Do not perform this

procedure while power is on to the 2500. This procedure

should be performed only by a qualified service technician.

To adjust the print head height, follow these steps:

1. Turn off and unplug the 2500.

2. Remove the ribbon cartridge and labels.

3. Locate the two corner screws on the main plate that hold the plate in

position. Loosen these screws so the plate is free.

4. Lift the main plate so you can see inside the 2500’s base.

5. Locate the four hex screws on the back side of the print head that

hold it in position. Loosen the screws, but do not remove them.

6. When the print head is free to move, move it as far to the right as

possible, then adjust the gap between the print head and the

underside of the platen to approximately 0.018 inches.

7. Hold the print head in this position and tighten the four hex screws.

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ProMaster 2500 User Manual 5-25

Adjusting Position

of Print on Label

(Dot Matrix Printer)

The left-to-right position of characters on the label is determined by label

calibration.

You can change the label calibration setting during a Task run by

pressing

STOP

and then

LOWER CASE

. The 2500 displays:

The

represents the current setting. The default setting places the first

column of print within 0.040 inches of the leading edge of the label.

Increasing the value one unit moves the print location approximately

0.005 inches to the right; decreasing the value moves it 0.005 inches to the

left. Enter a number from 0 to 255, and press

ENTER

If you change label calibration, press

CAL

to calibrate the label (see page

4-19).

Adjusting Position

of Label on Device

(Dot Matrix Printer)

The position of the label on the device is determined by the label

placement value. This is set in the system defaults to “Auto center,”

which instructs the 2500 to place the label on the true center of the device.

You can change label placement using a local mode command described

in Appendix F.

You can use the

Label Adjust

parameter to fine-tune label placement and

thereby adjust its centering while a Task is running. Press

STOP

and then

LOWER CASE

. The 2500 displays:

Enter a number from 0 to 255; each unit moves the label 0.01 inch closer to

the trailing edge. Press

ENTER

to accept the selection.

Note: This works only when “Auto center” is selected in the 2500 Setup/Labeler

menu.

Figure 5-6

Adjusting Label Calibration

ENTER LABEL CALIBRATION VALUE (X):

ENTER LABEL ADJUST VALUE (X):

1944-1

NORMAL

HIGHER VALUE

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5-26 ProMaster 2500 User Manual

Adjusting Press

Bearings

Make sure the dot matrix printer’s application plate is aligned correctly

by holding a device in your fingers and sliding it across the application

plate, over the press bearings, and onto the bearing plate (see Figure 2-8).

The device should move smoothly across the press bearings.

If device travel is not smooth, use a 7/64-inch hex wrench to loosen (to

raise) or tighten (to lower) the screw on the left side of the plate (near the

bearings) until a smooth transition occurs (see Figure 2-8).

Adjusting Print

Position on the Label

(Thermal Printer)

Two parameters control the position of text and graphics on the label. By

changing the value of each parameter, the location of the text or graphics

printed on the label can be adjusted.

•The

print shift

value affects the vertical position of the printed image,

moving the position of characters or graphics from the top to bottom

of the label (Y axis). See Figure 5-7.

•The

label calibration

value affects the horizontal position of the

printed image on the label, moving the position of the text or

graphics from left to right (X axis). See Figure 5-8.

Print Shift

Change this value using the STOP command described in the following

procedure.

1. Press

STOP

to pause the 2500 while a Task is running.

2. Press

LOWER CASE

. The display on the 2500 prompts you to

enter a new value.

3. Press

↑

↓

to enter a new print shift value between 0 and 16.

Entering a larger numeric value moves the printed character higher

on the label.

4. Press

START

to continue running the Task.

Figure 5-7

Print Shift

(affects vertical position)

Figure 5-8

Label Calibration

(affects horizontal position)

1656-2

INCREASE DECREASE

2177-1

NORMAL

HIGHER VALUE