X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=README;h=5dcd1ec26e05911c4dca2391e0244298a2bf6bb7;hb=1267907fe4ac6b93d04949c49a3d08eb1e631166;hp=53d8c3a4ee01e6d9f008164e3f8a9084cbbcf9b3;hpb=0c53cd7c0039bbe214d27dc427048172992e4095;p=Printer-EVOLIS.git

diff --git a/README b/README
index 53d8c3a..5dcd1ec 100644
--- a/README
+++ b/README
@@ -7,26 +7,45 @@ DESCRIPTION
     ribbon (K) to provide pixel-exact driver with support for two-side
     printing.
 
-    Existing cups driver available at
+    Existing cups driver is available at
 
     http://www.evolis.com/eng/Drivers-Support/Product-support/Dualys-3
 
-    does work, but I haven't been able to make it print duplex on cards,
-    especially when generating front and back pages separatly.
+    but I haven't been able to make it print on both sides of cards, partly
+    because using dumplex option in cups seems to segfault GhostScript
+    and/or `rastertoevolis' cups filter depending on combination of duplex
+    options.
+
+    I also needed pixel perfect transfer to printer, and cups bitmap format
+    is always in color, leaving final pixel modifications down to cups
+    filter which always produced differences between file sent to printer
+    and perfect black and white rendition of it.
 
 SCRIPTS
-    Current toolset sonsists of following scripts:
+    Current toolset consists of following scripts:
 
   scripts/inkscape-render.pl card/template.svg 201008159999 Name Surname
-    generate pbm files from Inkscape SVG template in `card/'
+    Generate pdf files from Inkscape SVG template in `card/' using
+    `print-front' and `print-back' object IDs. Layers doesn't work since we
+    can't toggle visilbity easily. To print more than one object gruop them
+    and change ID of group.
+
+    After pdf files are created, GhostScript is used to rasterize them into
+    pbm (monochrome) bitmaps.
 
   scripts/evolis-driver.pl front.pbm back.pbm > evolis.commands
-    provides driver which generates printer commands
+    Provides driver which generates printer command stream to print
+    two-sided card from pbm files.
 
   scripts/evolis-simulator.pl evolis
-    provides simulator for EVOLIS printer which is useful for development
+    Simulator for EVOLIS printer commands which is useful for development.
+    It creates one pbm file per page printed.
 
 EXAMPLE
+    Following is simple walk-through from svg image in Inkscape to evolis
+    command stream which can be executed in top-level directory of this
+    distribution:
+
       ./scripts/inkscape-render.pl card/ffzg-2010.svg 201008159999 Ime Prezime
       ./scripts/evolis-driver.pl out/201008159999.front.pbm out/201008159999.back.pbm > evolis
       ./scripts/evolis-simulator.pl evolis