Problem printing with Warm Neutral on Epson 7800


#1

Hi

I have been having some problems getting piezography to work on my Epson 7800

Here is relevant info:

  1. I flushed the printer from epson color inks with piezoflush. I was able to obtain perfect nozzle check patterns with the piezoflush installed.

  2. I very carefully followed the instructions to install a P2 system with warm neutral on my 7800. I had been printing with photoblack prior to the flush. I have the piezography matte black in the 7800 black slot, and the photo black in the yellow slot.

  3. Initially I had some trouble getting a clean nozzle check but now it seems to print clean. I am attaching an image of the last nozzle check I printed. You will notice that the first nozzle check pattern is good, then some gaps emerge. not sure why that is

  4. I installed QTR and Print Tool as per instructions. Loaded the profiles for the 7800 and 7880. I would like to print with Cone type 2 + 5, Epson Exhibition Fiber, Hahnemule Photo Rag, and Canson Entrada–at least at first, until I determine what I like the most.

  5. I tried a test print on the Cone Type 2 and Canson Entrada. I am getting a very strange result. Almost like the image is inverted, but not quite. Also the image is very dark. I am attaching an image of the print I made.

Here are the ink positions that I am using

LLB – Gloss Optimizer
Light Magenta – Warm Neutral 5
Light Cyan – Warm Neutral 3
LB – Warm Neutral 6
B – Matte Black
Cyan – Warm Neutral 2
Magenta – Warm Neutral 4
Yellow – Opaque Photo Black

I am pretty sure that I put the right ink in the right cartridge. User error is always possible but I tried to work very carefully and slowly so I doubt it.

NB: I am posting with without the mentioned photos because I cannot seem to make your uploader accept the images. I am happy to email them to you if necessary

You help would be much appreciated

Thanks

Adam


#2

Hi Adam~

Wells forwarded me the photos you emailed him, and I have attached them below. Instructions for posting images to this forum can be found here: http://www.inkjetmall.com/tech/content.php?152-How-to-attach-images-to-this-forum

What the image [U]should[/U] look like:


The print you’re getting:


Your auto nozzle check:



#3

I believe you may be dealing with two issues here:

  1. You’re using a P2 ink setup, but it looks like you’re using K7 curves. When using P2 ink setup, you must use “P2” curves for correct output. I have attached the P2-WN curves for you to install and use. Note the P2 curves begin with “P2” to differentiate from regular K7 curves.
  2. It looks like you have some inks shades in the wrong order, so I believe you mis-filled some carts.

We recommend NOT doing the auto nozzle check with using Piezography inks, because shade 7 is too light for the printer to detect (and GO is clear, so also not detected by the printer), so the printer thinks those channels are clogged and keeps cleaning kit’s self. Only print manual nozzle checks with Piezography inks.

From what I can see with your auto nozzle check, it looks like the shades are in the following order:
MK, 4, 2, PK
6, 3, 5, GO

If inks were in the correct positions, the nozzle check would print like this:
MK, 2, 4, PK
GO, 5, 3, 6

The best way to know what ink shades are in what channel is to print the Ink Separation image thru QTR Calibration Mode, which you can find instructions for here: http://www.inkjetmall.com/tech/content.php?144-Print-Ink-Separation-Image-thru-QTR-Calibration-Mode

Please keep me posted so I can help you sort this and get back to happily printing~ Dana :slight_smile:

Warm Neutral P2.zip (27 KB)


#4

Hi Dana
I have printed out an ink separation image
Here it is



Let me know what you think
I did a print of the test image with the P2 Profiles and it looks a lot better
I would still like to be sure that I have not inadvertently misfilled the carts
Thanks


#5

Based on this Ink Separation print out, it looks like your ink shades are in the correct order for P2 setup. Looking at the nozzle check again that you previously sent, it looks like it may have been photographed in a mirror, or was somehow backwards (I can’t make out the text at the bottom to confirm this)? Either way, the Ink Sep print looks good, so you should be getting good results now using the P2 curves.

Is there anything else I can help you with?
Best regards~ Dana :slight_smile:


#6

[QUOTE=Dana-IJM;4495]Based on this Ink Separation print out, it looks like your ink shades are in the correct order for P2 setup. Looking at the nozzle check again that you previously sent, it looks like it may have been photographed in a mirror, or was somehow backwards (I can’t make out the text at the bottom to confirm this)? Either way, the Ink Sep print looks good, so you should be getting good results now using the P2 curves.

Is there anything else I can help you with?
Best regards~ Dana :)[/QUOTE]

No, thanks for your help Dana!
The problem was that I took the image with photobooth on my Mac.
It automatically mirrors everything
When I printed out the ink separation test I had to flip it back in PS
Mystery solved. I would have been really bummed if I put the ink in the wrong carts.
Best Regards
Adam


#7

Ok, excellent, I’m glad your problem is resolved!

Please let me know if there’s anything else I can help you with.
Best regards and happy printing~ Dana :slight_smile: