Add printer.conf for the Epson DFX-5000+

Continuous fanfold, wide-carriage 9-pin printer, so it's configured
like printer.conf.rollpaper.bak (no fixed page length) but with
PRINTER_MAX_COLS set from the datasheet's rated 136-column printable
area at default 10 cpi on 16in stock.

printer.conf.epsondfx5kp.bak

@@ -0,0 +1,52 @@
+# ASCII Photobooth printer configuration
+# Sourced by txt2printr.sh and photobooth.py.
+
+# Is the printer loaded with A4 paper for a landscape printout? (true/false)
+# Needle/dot-matrix printers have no hardware page-rotation command: the
+# print head only scans across a fixed carriage width while the paper feeds
+# in one fixed direction, so there is no way to make the physical page
+# itself "landscape". Instead, when this is true:
+#  - txt2printr.sh rotates the ascii art 90 degrees in software before
+#    sending it to the printer (turn the printed page 90 degrees to read it)
+#  - photobooth.py sizes its live-preview viewfinder to an A4-landscape
+#    character grid instead of just following the terminal size, so what you
+#    see in the preview matches the shape of what gets printed
+# The Epson DFX-5000+ is a wide-carriage tractor-feed printer that only
+# takes continuous (fanfold) paper 4-16 in (101-406.4mm) wide - it has no
+# A4 sheet path, so this stays false.
+PRINTER_A4=false
+
+# Your printer's real per-page capacity in the normal (portrait, unrotated)
+# orientation, used to size the A4 viewfinder above and to know when a print
+# job already fills the page (see txt2printr.sh). Paper geometry and stated
+# pitch don't reliably predict this - measure it directly with pagetest.sh:
+#   ./pagetest.sh && PRINTER_A4=false ./txt2printr.sh pagetest.txt
+# then read off the last line number on page 1 (-> PRINTER_MAX_LINES) and
+# how many characters of the 64-wide test lines actually printed before
+# being cut off (-> PRINTER_MAX_COLS).
+#
+# Set PRINTER_MAX_LINES=0 for a roll/continuous-feed printer that has no
+# fixed page length. In that mode photobooth.py sizes captures to fill
+# PRINTER_MAX_COLS width and lets height follow the image's own aspect
+# ratio instead of cropping to a row count, and txt2printr.sh always feeds
+# the paper out at the end of a print instead of skipping the feed when a
+# page is already full (there's no page to fill).
+#
+# The DFX-5000+ is fed from continuous fanfold stock rather than cut
+# sheets, so it's treated the same as a roll printer here (0). Its DIP
+# switch 2-1 does let it track a fixed 11 in or 12 in form length with
+# perforation-skip, but that's a page-break convenience on the paper feed,
+# not a limit on total printable length - re-measure with pagetest.sh if
+# you rely on perforation-skip and want output to stop short of the next
+# perforation instead of running past it.
+#
+# PRINTER_MAX_COLS below is the datasheet's rated printable-column count
+# at the printer's default pitch (10 cpi) on its widest supported stock
+# (16 in fanfold): 136 columns. That's the printer's own printable-area
+# limit (0.51-1.22 in left margin, 0.51 in right margin), not a
+# measurement against this install's actual loaded paper width -
+# re-measure with pagetest.sh if narrower stock is loaded.
+# Source: Epson DFX-5000 Product Information sheet (9-Pin Printers,
+# 12/12/88), "Printable columns" table.
+PRINTER_MAX_LINES=0
+PRINTER_MAX_COLS=136