Though I am not familiar with your particular machine [ JF 1631 ] MOST Mimakis' running dual CYMK ink set up will fire ALL the print heads exactly as they where designed too. The only difference with the dual CYMK set up is that the second set of ink carts only supply ink after the primary cart runs out of ink. IF the "tech" you mentioned in your first post on this issue is factory trained he/she should know this. Provide that your tech did the conversion to dual CYMK matching cartridges SHOULD be tied to each other with the proper fittings at the back of the cartridges. IF done per factory specs once you do your initial fill sequence, the machine will do most of the work for you regarding switching carts when needed. YOUR Job will be using the Rasterlink software to properly monitor the ink consumption, and keep a set of back up inks in stock so that once your primary ink carts "switch" to the secondary carts you can swap in the replacement carts and the process continues.
I must have completely misunderstood what dual CMYK meant. Based on earlier conversations on here, I was told it would allow me to print at a lower pass rate with higher quality results and your method does not suggest that at all. I am not sure the advantage of your method...usually what I do when i run out of ink is put a new cart in and then continue printing...pretty basic. Not sure why I would want to piggy back two carts so I can print longer without a change. My tech is very knowledgeable just has limited setups in dual CMYK, especially the way you describe it.
Here is what another technician said about Dual CMYK and what I should expect. Read below
Ok
magenta cyan yellow black black yellow cyan magenta
is the way it should be done.
where the first cart at the top left is magenta and the bottom left is also magenta, so it goes in a circle.
there is an option to change this in" ink change" in service mode from memory. You will need working heads in all eight slots, you will also need to flush out and probably replace all the dampers on the bottom row/ or the heads from the black middle to the right i.e heads 5678.
You will see a great improvement in the print quality.
However in saying this the alignment has to be spot on , and this takes a lot of time with a magnifyer. I use a usb camera attached to my laptop with 200x zoom it works a treat. I have one customer who has this setup who is winning contracts as the machine is so so good.
The profiles used are just the standard mimaki ones that he has modified by reducing the overall density of ink, but decreasing the dot size of the 3 sizes you can adjust. Bi direction print is very good.
I am talking rasterlink 5 IP as the rip 600x 600 Dpi at 6 or 8 passes
If there is ever a problem with missing nozzles the extra heads seem to compensate so u can still have a reasonable print, but you must increase the pass rate to compensate.
Tekkie1
