MIMAKI JFX550-2513 - Setting the Head Gap; Checking the Head Gap Value

Chapter 2 Printing
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2.4 Setting the Head Gap
Set the height from the media to the print head nozzle surface.
• Use 1.5 mm as the head gap. With inkjet printers, if the gap between the print and media
increases, the ink droplets may vaporize before they reach the media. Vaporized ink will adhere
to the print head nozzle surface, media, and cooling fan filter. The amount of reflected light on
the print head surface also increases. Reflected light may cure vaporized ink adhering to the
nozzle surface or increase ink viscosity, which may reduce print quality and cause print head
failures.
(1) To block reflections when printing on media with an uneven surface, cover the suction areas
on the table.
• Be careful to avoid touching the carriage or Y-bar.
OK Not Acceptable
UV-LED Print head
Table
Media
Jig
Jig
UV-LED Print head
Table
Media
Reflected light Reflected light
0.5 mm or more
Less than 0.5 mm
(2) When printing on flying discs or other curved media, cover the curved surface. UV-LED light
may scatter widely off curved surfaces.
1.5 mm
Print head
Table
Media
(e.g., flying discs)
Jig
1
From MENU on the touch panel, tap [SETTING 2].
2
Tap [Media] > [Media thickness / Head gap].
3
Enter the head gap value.
• Setting value: 1.5 to 3.0 mm
• The maximum head gap value varies depending on the thickness of the media.
4
Tap [SET].
Checking the Head Gap Value
1
From MENU on the touch panel, tap [SETTING 2].
2
Tap [Media].
• The head gap value is displayed.
2