strange PGBK Behaviour on ip4200

[embguy]

Hello. I've been following the forum for a while. I own a Canon IP4500, and sucessfully used the german method to fill the CLI-8 's with Hobbicolors...
Unfortunatly, i get the same as aeronic when printing using PGBK now - only from the PGI-5BK cartridge

My printer has never been dissassembled, hardly used, and running hobbicolors for 2 weeks now.

My initial thoughts is some fluff maybe under the last of nozzles on the Pigment black array.

Aeronic - did you manage to solve the problem?

hardly used --> Your print head is partially clogged.

Take the cartridges out. Put some Windex on the ink inlet screen. Put back the cartridges. Wait for a few minutes to let the Windex to soak into the print head. Do a cleaning and nozzle check. Repeat this for a few time. Sometime, I have to leave the Windex on the inlet screen overnight.