Learn about quality control sheets
What are quality control sheets
Quality control sheets are extra sheets that are used during a job. The printer uses quality control
sheets for nozzle failure detection and for nozzle cleaning.
Media of quality control sheets
The media definition includes a parameter that indicates if media and media sides are suitable for
quality control sheets. (
Define media optimization parameters
on page 272)
If the printer prints a job on media that cannot be used for quality control sheets, alternative
media can be used to print and read the nozzle failure detection information. This means that you
load both job media and alternative media, so that nozzle failure detection sheets remain part of
the quality control. (
Define usage of quality control sheets
on page 243)
Nozzle failure detection sheets
The printer prints nozzle failure detection sheets to inspect if nozzles work properly. When the
printer has detected failing nozzles, the nozzle failure compensation mechanism compensates for
nozzles that are not productive.
By default a nozzle detection sheet is printed after every 100 printed sheets. Moreover, when the
printer has been idle for more than 19 seconds, the first new job is preceded by a nozzle failure
detection sheet.
[297] Example of a nozzle failure detection sheet
Nozzle failure compensation
The nozzle failure compensation is a fully automated mechanism. When failing nozzles are
detected, other nozzles are activated to compensate the failure. (Nozzles can react in different
ways.
• Adjacent nozzles eject larger drop sizes.
• Extra nozzles are getting involved.
• Nozzles with other ink colors are getting involved.
Learn about quality control sheets
Chapter 9 - Print what you expect
241
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