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Roland SP-300V: bad printing on 1 head, like diffusion of dots, snow effect...

SOPRO72

New Member
On my SP-300V printer the blue color started producing a snow effect, like a diffusion of ink droplets notably ahead and aside of the expected patterns (see enclosed photo).

All alignments setting have been cheched and are OK (horizontal, vertical, bias, bidirectionnal, etc...).
Changing the printing settings did not help either, except running unidirectionnal reduces the defect by 50% which is quite logical.

Many cleanings have been done, including deep ones. The simple print test for nozzle test is correct on the blue head. A new blue cartridge has been tried too.

Do you have an idea of the cause of this phenomenon? Can anyone help?
From your experience, can it be a head wear off?

Thanks in advance for your help.

Regards,
Miguel
 

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