I have problems with printing pure magenta and cyan.
Magenta prints reddish brown, cyan prints darker blue.
I print from the iMac PDF
The PDFs are printer compliant.
It has been cleaned, and a test pattern printed, and printed directly from Openoffice by Apache. Everything is OK there. I have reported it to Canon, but they seem to want me to waste my ink and cleaning cartridge.
Apparently they have no idea why this is happening. I must have created over 50 PDFs with different settings, but the colours are always printed incorrectly. I hope someone knows which profile or settings to use.
My PDFs are printed correctly at my workplace with a large laser Konica copier.

Question

I have problems with printing pure magenta and cyan.
Magenta prints reddish brown, cyan prints darker blue.
I print from the iMac PDF 
The PDFs are printer compliant.
It has been cleaned, and a test pattern printed, and printed directly from Openoffice by Apache. Everything is OK there. I have reported it to Canon, but they seem to want me to waste my ink and cleaning cartridge.
Apparently they have no idea why this is happening. I must have created over 50 PDFs with different settings, but the colours are always printed incorrectly. I hope someone knows which profile or settings to use.
My PDFs are printed correctly at my workplace with a large laser Konica copier.

Answer

In fact, power cleaning (not the normal nozzle cleaning programme) helps. Yes, it uses a lot of ink, but it usually helps.

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