Mutoh rj900pro

[iladi]

One problem: black and sometimes yellow, disaper when not printing. After 3-4 inches of print, they come back. While printing every color is ok. A simple clean brink back all the inks in perfect condition. Why is this ?

 

[iladi]

One more atempt to get some help.

Black channel is starving when the printer is idle. A test print revels almost no ink printing. But if i start to print, the black channel comes to life in about 4 inches and it is ok the printing is on. A print test right after print is ok, but is the printer is idle for a while, black test re veals nothing. A simple clean is ok to bring black back to life. I,m a little confuze about the ink "reverse flow" while print head is parked.

 

[thmooch]

The Ink Cartridges can have a draw on them pulling ink back to the cartridge. Change out the dampers to see if it still persists.