The first link explains how to print the ink separation page in calibration mode. Both involve printing using QTR in what is known as “calibration mode” - you cannot do this using the Epson driver, or by playing with the printer’s settings. The only way to have each bar in the purge pattern represent one ink channel is to follow the instructions in those two links. I can explain why in detail if you like (printer is CMYK but presents to the OS as RGB), but it’s going to be simpler if you just trust me on this. That way of printing will mean that each bar in the purge pattern will be a combination of channels. But not so the purge pattern, at least not the way that you printed it. The nozzle checks will show the state of the nozzles in each individual channel. Likewise, nozzle checks are done with the printer driver or from the printer menu.

The purge pattern was printed directly from Photoshop using the standard printer driver. Is there any obvious explanation for this? M, OR and GR print dark pink on the 10-color purge page but do not print at all on a nozzle check. LC is one of the colors that prints light pink yet it prints a perfect nozzle check. What explains the difference in the darkness of the four light pink channels? (I am assuming that all of the colors should print piezoflush in an even pink.)Īlso, I am only getting three colors to print with a nozzle check: Y, LM and LC. There isn’t any obvious banding on the 10-color print page. If I print a ten-color print page, I get six colors in nice dark piezoflush pink and four colors in light piezoflush pink. The latest effort involved removing the selector assembly and flushing that with piezoflush - it still had old ink in it.Īfter doing this and running an ink charge, I now have all ten channels printing. I have made progress getting the head cleaned. When I received it, it was loaded with piezoflush in an attempt to clear out several clogged channels.

I was given a 4900 by an owner who no longer needed it.

Purging test pattern 4 color printers