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+SPP-2020 is a cheap photo printer from Samsung. The print quality is
+great and usage costs are acceptable. However the manufacturer doesn't
+provide a Linux driver which is somewhat strange for Samsung.
+
+The rastertospp is a CUPS raster converter that takes a cups-raster as
+its input, and on the output spits a stream of data suitable for direct
+sending to the printer. This is one possible form of a driver for CUPS,
+the one which makes most sense in the case of this printer.
+
+Print quality of this driver seems the same as from the Windows driver,
+no color profiling is done. As of version 1.1 there is an "Avoid
+clipping" option (default: on) which in some cases yields better results
+than stock Windows driver.
+
+Data format suitable for the printer was derived by analysing several
+print-to-files made on Windows.
+
+Only best-quality on 4x6" (~10-15cm) photo paper is implemented but it
+seems the only use-case anyway.
+
+NOTE: The ppd file required for this printer is located in
+/usr/share/cups/model/Samsung. It's called Samsung_SPP-2020.ppd.