Just a few comments - I don't use a 1400.
There is a thing you can buy off eBay called a chip resetter that will tell all your coloured inks that they are always full; they are very cheap.
I take it you have checked your print settings to see if it has an option for printing in black.
You can buy Accurip and the Black Max system which is a high density dye based black ink system for film positives where it has all black inks and draws from them equally.
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