Hi Walker and others,
I have been using my remapped 9900 printer lately to print negs on Pictorico Ultra Premium (roll), and banding appears, as dark thin lines that are visible in homogeneous areas. All nozzles are printing clear, this has been checked several times attentively.
Based on my experience, this was mainly due to paper feed adjustment, and in fact, by changing the paper feed adjustment values the banding was “morphing” and getting lower as I increased the values. In order to calculate the correction value, I have printed the chart with distances provided on this link. This file, that I have modified to just print the lateral strips on Pictorico, basically prints a 280 mm calibrated distance and allows one to measure whether the distance is respected by the printer, and if not, calculate the adjustment value by using their chart. After many tests, I realized that the maximum positive correction possible of Paper Feed Adjustment alleviated the dark banding, but not totally. When printing from Pictorico in roll (17 inches) and Custom paper set to 0.1 mm thickness, narrow platen gap, Photo Gloss 170 paper, Suction -1, I had to go as far as Paper Feed Adjustment to +0.7% (the maximum value allowed for Custom paper) and STILL I got at around 279.5 mm instead of 280 mm. I must mention that I had also activated the Paper Feed Adjustment from the Epson LFP Remote Panel 2, where I set up the Paper Feed Adjustment correction to +25 for Photo Gloss 170 paper in roll and with 2400 dpi. I do not know whether these two corrections add (the one set up for custom paper and the one set up from the LFP Remote panel). Long story short, it seems that my 9900, at least when using Pictorico in roll, demands what seems to me an extraordinarily high Paper Feed Adjustment value, and even at the maximum amount of possible adjustments I still get very slight banding…Is this normal? What could be the cause for this? Any way to correct this?
Thanks in advance and very warm regards,