Walker, Jon, Dana
I recntly upgraded my 3880 K7 WN matte black to the Ultra HD Matte Black. Using the QTR-K-flush.tif I flushed out the Matte Black with Piezo Flush and then printing the same routine added in the new Ultra HD Matte black until it printed a solid black page. I have since printed 8 11x17 images and the deep blacks are lighter and much faded as compared to the original matte black. I have done three manual nozzle checks and an automatic nozzle check and they all look fine. I have also done a regular cleaning and no difference. The ink carts are agitated regularly.
I have a grayscale test image on the same Canson Rag paper printed two months ago with the original matte black and it is correct. The same test image printed with the new Ultra HD Matte is washed out and has much lighter deep blacks. Just to prove to myself that I am not crazy I printed the same grayscale file on my 7880 with the Pro inks with Highlights 75n25w and the same for Midtones and Shadows - this appears to be a very close approximation to K7WN. The print is excellent. I even printed the same grayscale image on my Canon IPF8400 using the monochrome settings at Warm Balck on the Canson Rag. It has even deeper blacks than the Pro inks and vastly blacker than the the Ultra HD Matte Black on the 3880. So it would seem there is something going on either with the 3880 or the inks in the 3880 or possibly both.
Any help would be much appreciated.
I have waiting orders for prints and the prints I am getting definitely will not acceptable to my clients.
Any advice would be much appreciated.