Finally, the info as requested! It confirms the driver in use…
*cupsFilter: "application/vnd.cups-raster 0 /opt/epson-inkjet-printer-201113w/cups/lib/filter/epson_inkjet_printer_filter"
*ModelName: "WP-4530 Series"
*ShortNickName: "EPSON WP-4530"
You are using the full-featured driver.
FWIW, there is also a generic ESC/P-R driver available (epson-inkjet-printer-escpr-1.6.18-lp151.2.3.x86_64 package) which uses a different print filter (/usr/lib/cups/filter/epson-escpr-wrapper) that could be tried as an alternative.
Anyway, the next step is to put CUPS into debug-logging mode for more verbose output. Do that with
sudo cupsctl --debug-logging
Then run
tail -f /var/log/cups/error_log|grep -iA4 "filter"
and try printing a document. Press CTRL+C to terminate. Copy the output and post back with the output please.