Epson WF-4630 colour streaks in black-white mode

Litwarbe

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Jul 31, 2026
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Printer Model
EPSON WF4630 (model C511A)
Hi everyone,

My Epson WorkForce Pro WF-4630 has worked flawlessly for 10 years, but now started to print streaks.

Sympton :
When printing in black-white mode, I get colour strikes (magenta).

I have already done the following, but none of them to any avail :
Epson cleaning procedure (from printer menu)
I have cautiously manually cleaned the surface of the flushing head (where the T6710 maintenance box is inserted).

Question :
Before I start looking for a replacement printer (which I would like to avoid since scanning, emailing, still works fine), I would appreciate any advice for this particular problem.
Probably a clogged printerhead, or would there be a real defect ?
For what I can see, the printerhead carriage is not accessible, so I am not sure what else I can do to clean without risk of damaging the printerhead.
Maybe it is possible to disable color printing mode at all, since I mainly use black-white printing only.

Specs :
Epson WF-4630 Pro
Model C511A
Firmware GM30KA 51.15
No error messages
Genuine ink
21000 pages printed

Thank you
 

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