So I've had a bad print which prompted a nozzle check which looks like this...
What I'm thinking is that the Light Black (posn 5) was blocked until the check, then it cleared. A subsequent print after this check was fine. This has happened before with similar results. I think it was Light Magenta that went that time and it was a few months ago.
Is this common on older printers? Am I looking at a printer on its way out? I usually try and print once a week, but it's been three weeks since my last print...
Are the blobs on the cyan and light light black anything to worry about?
Hi, I have the same printer as you, the 4800 Pro are prone to suffering from blocked heads, when I bought mine (second hand) it hadn't been used in 2 years, It took several days to get the heads back into condition. What the printer suffers from is irregular use, as the nozzles start to block. I don't print everyday so it quickly can become an issue. How I resolve blocked nozzles. I am not sure what you have done before, and I am not trying to teach a granny to suck eggs. So apologies if you've been down this road.
1. Try the Superclean method via the menu Start printer, hold down the power button and pause button, the machine will power up, and show hex dump on the menu screen, then let go the buttons. Scoll down to SSSL on the menu and execute, this will do a superclean, it doesn't seem to waste too much ink doing this either.
2. If the above doesn't work, then the next step is to soak the heads overnight. I use a substance called Nilglass get it from DIY shops, its a bloody good window cleaner by the way. Spray liquid onto a folded kitched towel so its really soaking wet. Make sure the printer is off
and then release the print head. Lay paper towel along the head track and run the head over it, try not to catch any of the towel. Leave head parked over the soaked towel overnight. Then remove and do a print test this should clear the nozzle block, if still blocked after doing 1 & 2 then repeat the print head cleaning described in 2. I had to do mine several times, as nearly every head on mine was crap.
I run a test print action everyday I made up a colour chart in photoshop, and then saved it as an action then create an automater run (I'm using IOS) using the photoshop file, and hit the run button once a day, it stops the heads from clogging.
The other issue that occurs id the humidity level in the roon where the printer is sat, if it's too warm then that's the issue. A trick I use in the summer is placing a plastic container of water next to the printer, creates better humidity.