Bug#839245: printer-driver-escpr: no printing at maximum resolution

[laurent deber <laudebug@libero.it>]

Package: printer-driver-escpr
Version: 1.6.8-1
Severity: normal

Dear Maintainer,

Hi,

I have printed a vector graphics file with driver escpr,
but the two different options:
#lpr -o quality=PLAIN_NORMAL filename.ps
#lpr -o quality=PLAIN_HIGH filename.ps
don't show any difference in printing resolution.

The ppd file has the following lines:

*MediaType PLAIN_HIGH/plain papers-High: "<</HWResolution[360 360]>>setpagedevice"
*MediaType PLAIN_NORMAL/plain papers-Standard: "<</HWResolution[360 360]>>setpagedevice"

so, I tried to modify it as follows:

*MediaType PLAIN_VHIGH/plain papers-VeryHigh: "<</HWResolution[5760 1440]>>setpagedevice"
*MediaType PLAIN_HIGH/plain papers-High: "<</HWResolution[720 720]>>setpagedevice"
*MediaType PLAIN_NORMAL/plain papers-Standard: "<</HWResolution[360 360]>>setpagedevice"

and I have reconfigured the printer and its defaults values, obtaining the following results:

at PLAIN_HIGH the printer takes a longer time, but the quality is effectively the same as
PLAIN_NORMAL;
at PLAIN_VHIGH, that is 5760x1440 dpi, the maximum resolution declared by manufacturer, 
there is a filter fault and the printer doesn't print at all.

 The printer is an Epson ET-2500

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.6.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages printer-driver-escpr depends on:
ii  libc6          2.23-5
ii  libcups2       2.2.0-2
ii  libcupsimage2  2.2.0-2
ii  python3        3.5.1-4
ii  xz-utils       5.1.1alpha+20120614-2.1

Versions of packages printer-driver-escpr recommends:
ii  cups-ppdc  2.2.0-2

Versions of packages printer-driver-escpr suggests:
pn  psutils  <none>

-- no debconf information