Diagnostic aids 3-5
5026
Registration
Note: If you need to perform alignment or registration, see “Printhead alignment” on page 4-8.
The following information is meant to explain the uses for the menu items.
Print registration makes sure the black printing is properly aligned on the page. This is one of the steps in
aligning a new printhead. It is also the first step in aligning the duplex registration. See “Quick Test (duplex)”
on page 3-16.
The settings available are Top Margin, Bottom Margin, Left Margin, Right Margin, Skew, and Quick Test.
Skew
One printhead houses the four color planes. The black plane is aligned to the printer, and the color planes are
internally aligned to black. Adjust the skew mechanically by moving the printhead with a printhead adjustment
screw. See “Printhead mechanical alignment (C746)” on page 4-8 for instructions on setting printhead
alignment. Electronic alignment fine tunes the alignment of the color planes to the black plane once the
printhead is installed. Skew adjustment must be performed before color alignment is attempted. The following
illustration shows proper alignment versus skewed alignment.
Proper alignment Skewed alignment
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