How to force lp from CUPS to print in grayscale?

Question

I want to print an image from a command line:

lp -o scaling=//100// image.jpg

How can I force it to be printed in grayscale?

See also https://unix.stackexchange.com/a/18449/77539 – Joshua Goldberg Aug 15 '19 at 20:48 — Joshua Goldberg, Aug 15 '19 at 20:48

score 9 · Accepted Answer · answered Mar 22 '13 at 20:54

9

Maybe you are looking for lpoptions ?

Use lpoptions -l in order to know what's the name for your printer.

You can play it like thi (example with an HP Photosmart) :

lp -o scaling=//100// -oColorModel=KGray image.jpg

answered Mar 22 '13 at 20:54

GHugo

792
4
10

score 1 · Answer 2 · edited Dec 06 '17 at 18:07

1

If you look in the PPD file for the current printer, you should get a hint of how to denote grayscale printing (or any option for that matter). It could be as above or ColorModel=Gray, ColorModel=Grayscale, etc.

Try the following command to search the options for printers on your system:

grep -i gr[ae]y /etc/cups/ppd/*.ppd

edited Dec 06 '17 at 18:07

Ian Mackinnon

660
1
7
14

answered Oct 04 '13 at 11:42

mira_mayhem

11
1

score 0 · Answer 3 · answered Apr 25 '22 at 13:34

0

Open cups window in Raspberry pi os

menu > preferences > Print Settings > select your printer > Properties >

Printer Options > Color Model > Grayscale

answered Apr 25 '22 at 13:34

Whois7pi

1

The question is not about Raspberry. – G-Man Says 'Reinstate Monica' Apr 26 '22 at 05:20
But as raspberry is Linux based. So the options would be same, I hope. – Whois7pi May 07 '22 at 07:08

score -1 · Answer 4 · answered Mar 22 '13 at 20:06

-1

You will have to convert the image to a grayscale version, by e.g GraphicsMagick or ImageMagick.

answered Mar 22 '13 at 20:06

vonbrand

18,156
2
37
59

2

Could you add a solution? Maybe the command to run to convert an image to greyscale. – n0pe Mar 22 '13 at 20:56
@n0pe, try: https://stackoverflow.com/q/13317753 – casualunixer Jan 22 '22 at 19:07

How to force lp from CUPS to print in grayscale?

4 Answers4