236 Chapter 5 Print Quality
Print Quality
Each single region is composed of a series of numbered triangles. Each rectangle is related to a single
nozzle in the printhead. If one or more of the nozzles are malfunctioning or mispositioned, you will see
that the rectangles are not filled. The corresponding color and the number printed inside can be read.
Corrective action
If the printer has nozzle defects, the level of image quality achieved can still be considered acceptable
because the Printer can automatically compensate for this, there is no need to replace the Printhead
because of nozzles out.
A single die for a single color can contain up to 70 nozzles out and still the print quality will not be
significant degraded.
1. Perform a clean of the printheads
2. If there is still any die above the threshold level (70 nozzles out), perform a hard clean process.
3. If the a hard clean has improved the number of nozzle that have been recovered, perform the hard
clean again.
4. If there are any dies that have more than 70 nozzles out per die, replace the printhead.
This example on the left has many
nozzle outs. The unfilled white
rectangles indicate the nozzle is not
firing. In this example, the zoomed
area has 6 faulty nozzles. The
corresponding nozzle number can be
seen directly from the print.
This is an example of good nozzle health. All rectangles
are perfectly filled with the printhead’s color.
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