In my company we have a Sharp MX-4500N, but I only can print in monochrome, even if all the options are defined to print in colour.
Capturing the file sent to the printer, I can see the document is in colour, but probably the information to print in colour is not sent to printer.
In the Printer Server there is authentication to print in colour, but directly there is no authentication. From a windows machine I've print in colour directly by lpr. The default in the printer is to do
black and white, switching to the default to
colour I could print in colour from Ubuntu. Probably the print job is not sending the parameters correctly. How can I debug that?
Can you point more ways to troubleshoot this problem?
The server is running Ubuntu 11.10.