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Sorry, I always forget about mentioning this possibility because of the other printers I run I have to maintain a stable environment, and I just don't think about that others may be having wild swings in humidity and temperature.

If you're printing pure black you may have to create a cool black to compensate for the reflective media.

I believe that the documentation for a couple of the firmware upgrades stated that there would be a run in time for color changes. This is maybe what you are seeing with that change in the middle of a print. Your passes are so high and the ink density is so low that it not likely to be ink...

Are you sure that your Greys that are whatever % of black are actually print black ink only. That takes a RIP setting like Pure Primaries or Black as Inkjet Black, or turning off color management. Any others settings will use all inks.

Have you read through this thread? http://www.signs101.com/forums/showthread.php?128041-Latex-360-color-consistency-is-not-there/page2 Might be somethings to ponder in there.

Then I would say the first place to look is your profile making software or spectro. Have you compared the output from your profiles with the latest profiles that HP installed when you last updated the firmware?

On closer look at your samples it does appear that there could be a problem with the light magenta. What does it print like if you make a media preset with only using CMYK and then create a new profile for that setting?

What are you do for color management? Are you creating your own profiles? Or are you just throwing canned profiles at it, that come from who knows where or from who knows what firmware version they were created under?

I should have asked first. Didn't realize you were looking to do a small run. Just did a 17,000 run of 1000 piece puzzles. Had 4 custom ones that they only wanted 500 of each ganged in the run.

I guess it all depends on quantities, offset printed sheet glues to chipboard, etc. OP was pretty vague.

I print my own calendars as well as custom calendars for others. www.dypinc.com

These guys print puzzles for me. That is jigsaw puzzles if that is the kind of puzzles your looking for.

I am seeing the same thing. Which firmware do you have. I have not loaded the latest firmware (NEXUS_01_10_01.2) so I don't know if that will make any difference.

Not sure how to make it more clear. For larger quantity jobs I always print roll to roll, if it needs an over-laminate then again roll to roll on the laminator. Then roll to substrate on the laminator. Any quantity over 6 I usually do this way although with with 4 x 8 or larger sheets I will do...

For 100 2 sided signs vinyl to coro, I would print (with timing/stop marks for the laminator) roll to roll and then laminate roll to 18 x 24 precut coro. 2 guys 3 hours. Trimming after laminating takes the most time. If you can spare 2 people to trim you can feed the coro into the laminator...

Sounds like your using the Aqueous version of PhotoTex.

Yes, and there is a sweet spot for the Optimizer on any given media, not enough and you get coalescing, to much and you get more graininess.

For better saturation I have found with a lot of 3M vinyls that 170% or 150% works best. Let your RIP do a proper ink limit per channel & linearization before you create your profile. 120% always seems a little week but is usable in a lot of situations. Try even higher ink limits and see where...

It is not even recognizable now.

You have to have a setting in a RIP to enable this as well as use the same print mode. Have you called Caledra and asked them?