If you’re developing an inkjet press you’ll know that the problem of non-uniformity or banding is a particularly difficult one to resolve. It’s especially acute on areas of flat tints with the result that printed output is unacceptable to you and to your customers.
Left unresolved, it could prevent you from going to market with a new press. Out in the field this problem has a severe impact on your customers who can either not run certain jobs on their inkjet press or, in some sectors of the market, are forced to sell their output at a discount.
The good news is that with PrintFlat you and your users have a solution that is quick to deploy and cost-effective, and it can be applied to any workflow with or without a RIP.
PrintFlat reduces non-uniformity, commonly known as the inkjet smile.
Banding is often referred to as the inkjet smile or frown and is due to variations in inkjet printheads. It is often caused by:
All three of these causes apply to single-pass and multi-pass inkjet presses. In the case of multi-pass presses the overlapping swathes of the print head add extra potential for problems. The typical method of correcting these effects is by tweaking head voltages, but that’s a very manual, time-consuming task which can’t always achieve the desired results.
PrintFlat creates a customized calibration based on measurements from the press. It corrects tonality to hide banding.
Your calibrations are installed into the ScreenPro™ screening engine which applies the correction to the press. ScreenPro can be applied to any workflow with any combination of printheads, inks, electronics, or other software choices that may have been made.
PrintFlat adjusts the density within ScreenPro to produce uniformity across a print bar. The process can be automated for closed-loop correction and, unlike correction by adjustment of voltages, there is no effect on jetting stability or head lifetime, nor ink pressure and timing/drop speed variation. It greatly reduces the time and cost both of building a press and of maintaining it.