A4 color print-option test results

date:     2026-11-11T10:25:41+01:00
queue:    Papercut-Default
source:   /home/rsnel/tmp/reseach/a4-cmyk-color-printer-test-page.pdf
media:    media=A4 pinned on every job
PPD:      the server's default Follow-Me.ppd, no option-mapping backend
answers:  color = display shows Color; monochrome = Mono/Grayscale/B&W;
          auto = Auto; unknown = free text; not checked = no answer

test 1: baseline - no color option
  why:      control: is color already the default?
  expect:   the queue default
  lp:       lp -d Papercut-Default -o media=A4 /tmp/color-tests-vhl1zegc/test1.pdf
  job:      Papercut-Default-55
  display:  unknown
  note:     n

test 2: print-color-mode=color
  why:      standard IPP attribute
  expect:   color
  lp:       lp -d Papercut-Default -o media=A4 -o print-color-mode=color /tmp/color-tests-vhl1zegc/test2.pdf
  job:      Papercut-Default-56
  display:  unknown
  note:     y

test 3: print-color-mode=auto
  why:      standard IPP auto value
  expect:   device/printer decides
  lp:       lp -d Papercut-Default -o media=A4 -o print-color-mode=auto /tmp/color-tests-vhl1zegc/test3.pdf
  job:      Papercut-Default-57
  display:  unknown
  note:     y

test 4: print-color-mode=monochrome
  why:      negative control: proves the display/pipeline follow the attribute
  expect:   monochrome
  lp:       lp -d Papercut-Default -o media=A4 -o print-color-mode=monochrome /tmp/color-tests-vhl1zegc/test4.pdf
  job:      Papercut-Default-58
  display:  unknown
  note:     n

test 5: ColorModel=RGB
  why:      generic PPD option name
  expect:   color only if the PPD name is honoured, else the default
  lp:       lp -d Papercut-Default -o media=A4 -o ColorModel=RGB /tmp/color-tests-vhl1zegc/test5.pdf
  job:      Papercut-Default-59
  display:  unknown
  note:     n

test 6: ColorModel=CMYK
  why:      generic PPD option name
  expect:   color only if the PPD name is honoured, else the default
  lp:       lp -d Papercut-Default -o media=A4 -o ColorModel=CMYK /tmp/color-tests-vhl1zegc/test6.pdf
  job:      Papercut-Default-60
  display:  unknown
  note:     n

test 7: ColorModel=Gray
  why:      control for PPD-name handling
  expect:   monochrome only if the PPD name is honoured, else the default
  lp:       lp -d Papercut-Default -o media=A4 -o ColorModel=Gray /tmp/color-tests-vhl1zegc/test7.pdf
  job:      Papercut-Default-61
  display:  unknown
  note:     n

test 8: print-color-mode=color + ColorModel=Gray
  why:      conflict precedence
  expect:   color if the IPP name wins, monochrome if the PPD name wins
  lp:       lp -d Papercut-Default -o media=A4 -o print-color-mode=color -o ColorModel=Gray /tmp/color-tests-vhl1zegc/test8.pdf
  job:      Papercut-Default-62
  display:  unknown
  note:     y

summary
  1. unknown      baseline - no color option
  2. unknown      print-color-mode=color
  3. unknown      print-color-mode=auto
  4. unknown      print-color-mode=monochrome
  5. unknown      ColorModel=RGB
  6. unknown      ColorModel=CMYK
  7. unknown      ColorModel=Gray
  8. unknown      print-color-mode=color + ColorModel=Gray

color shown:      (none)
monochrome shown: (none)
auto shown:       (none)