Monday I received a call from the gallery owner. She asked for more owl photos. It seems all of the matted pieces sold, along with one of the smaller framed prints. I love getting this kind of phone call! I promised to bring more of these pictures to the gallery Thursday.
Monday evening I made a number of prints on letter-size sheets. These would be used in matted/bagged pieces and in the smallest frame size I use. As is my usual workflow, I made the files ready to print, printed a nozzle check (no clogs), and then made the prints. Entirely routine. I wanted to make one more larger print to frame, but ran out of time.
Yesterday after dinner, and before other business I had to take care of, I had time to make that larger print. I set up the file for printing, made the nozzle check print (no clogs), and then made the owl print on a Super A3/B (13 x 19 inches) sheet of GGFS. I couldn't believe the result. It's the worst print I've ever made. Color was waaaaay off, and the gloss differential was horrible. These are white birds, so there's always a little of that, but I've never found it objectionable with this paper (or EEF) and the 7900. The entire print had a magenta cast, making the foggy-blue sky background an alien, lavender shade. The owls were pink.
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What happens when LLK goes away (left). The snippet on the right shows the correct color. Sorry for the poor reproduction. These are point-n-shoot snapshots of the prints. |
Thinking perhaps I'd made an error when setting the profile, I used a scrap sheet of GGFS, one that had been used for testing something a while back but had most of the sheet unprinted, and started over. I went through each step of my workflow very carefully, made the print, and got the same result. By then I was out of time and had to shelve the problem until this morning.
Today I set up to print, checked my workflow carefully, and then made a nozzle check print. Ah, there's the problem! The entire LLK channel was missing—not a single dot printed. All other channels were 100%. Interesting—last evening I printed a perfect nozzle check, and then printed my owl picture just minutes later. In those minutes, the LLK channel disappeared. I should mention there's plenty of LLK in the cartridge. This is the first clog I've seen since 3 January.
I did a cleaning of the Y/LLK pair, and then printed a nozzle check. LLK showed a few line segments in the print, but nearly all of the nozzles were still missing. I did a second cleaning of that pair, this time a "power clean". The nozzle check after that was perfect. Right away I made a small print of last night's failed picture. It looked great. So I resized and sharpened for the larger version, loaded a sheet of GGFS, and made the print. Perfect.
It's all a little puzzling, as the machine has been trouble-free since that last clog was cleaned in early January. I had no trouble with the prints made Monday, the nozzle check printed on Tuesday was perfect. Hmmm....
Tomorrow I'll be making a dozen client prints in various sizes, all on mat paper. I'll be watching carefully as each print emerges from the machine.
--Jay