thank you all for your help!!
i forgot to mention I'm doing photogravure on polymer plate that is the rason I need only matt black!
I did the switch of all the ink for some cleaning liquid instead ( exept for the matt black) and all is working fine so it will be much cheaper now to run this printer!! only 50$ (canadian) for 1 litre of cleaning liquid I should be able to refill 3 time every color !! for me it's a 650$ saving..happy hope this help any one !
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thank you!!
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www.troche.ca?
