Were are the Master Quad curves for the Epson 4900 located. I have downloaded the latest Windows PiezoDN package and do find the mentioned PiezoDN-Master.quad or the PiezoDN-Pos-Master.quad. All the other printer versions seem to have at minimum the PiezoDN-Master.quat except for the Epson 4900 and 7900/9900 printers.
Looking for the master quad to create curves to support a spit tone carbon transfer process.
Cheers,
David